Hydrogen sulfide trapping compounds, compositions comprising same and uses thereof

Abstract

The present technology relates to an electrochemical cell element comprising a compound of formula (I). The invention also relates to methods for trapping hydrogen sulfide (H2S). More specifically, described herein are compounds comprising at least one H2S-trapping group and at least one linear or branched aliphatic group having at least 10 carbons, wherein the aliphatic group is optionally substituted, compositions, electrolytes, coated particles, and electrode materials comprising same, and also electrochemical cells comprising these H2S-trapping compounds.

Description

[0001] HYDROGEN SULFIDE TRAPPING COMPOUNDS, COMPOSITIONS COMPRISING THEM AND USES THEREOF RELATED APPLICATION The present application claims priority, under applicable law, from Canadian patent application number 3208448 filed on August 4, 2023, the content of which is incorporated herein by reference in its entirety and for all purposes. TECHNICAL FIELD This document relates to the field of hydrogen sulfide (H2S) trapping, compounds for doing so, compositions comprising them, coatings and methods for trapping H2S. The present application also relates to electrochemical cell elements comprising the H2S trappers. STATE OF THE ART Sulfur-based compounds are associated with problems related to their interfacial stability as well as their stability to ambient air and humidity.Specifically, these materials generate hydrogen sulfide (H2S) gas upon contact with humid air and must therefore be prepared, assembled, and operated under an inert atmosphere. One strategy used to address this issue involves modifying these materials to make them more stable in ambient air, which can lead to a change in their properties or even a significant decrease in their performance. Another approach involves directly adding H2S traps, thereby improving the safety of the systems. This primarily involves incorporating inorganic H2S trapping materials into a support resin, thereby significantly increasing the weight and volume of the system. There is therefore a need for the development of H2S trapping compounds compatible with electrochemical systems, for example in the all-solid state.SUMMARY In some aspects, embodiments of the present technology comprise the following items: Item 1. A component of an electrochemical cell, the component being selected from an electrode material and an electrolyte composition, the component comprising a compound of Formula I:. in which: R 1 is, independently at each occurrence, chosen from a saturated or unsaturated, linear or branched aliphatic group and a cycloalkyl, heterocycloalkyl, aromatic or heteroaromatic group, the aliphatic, aromatic or heteroaromatic group being optionally substituted; and R 2 and R 3 are, independently at each occurrence, chosen from a hydrogen atom or a saturated or unsaturated, linear or branched aliphatic group, or R 2 and R 3 together with the adjacent carbon atom form a carbonyl group. Item 2. Element of item 1, in which R 1is at least one occurrence a saturated or unsaturated, linear or branched aliphatic group, possibly substituted. Item 3. Element of item 2, in which R 1 is at each occurrence a saturated or unsaturated, linear or branched aliphatic group, possibly substituted. Item 4. Element of item 1, in which R 1 is at least one occurrence an optionally substituted aromatic or heteroaromatic group. Item 5. Element of item 1, in which R 1is at each occurrence an optionally substituted aromatic or heteroaromatic group. Item 6. Element of one of items 1 to 3, in which the aliphatic group is unsaturated and comprises at least one carbon-carbon double bond or triple bond (alkenyl or alkynyl). Item 7. Element of one of items 1 to 3, in which the aliphatic group is saturated (alkyl). Item 8. Element of one of items 1 to 3, 6 and 7, in which the aliphatic group has at least 6 carbon atoms, or at least 10 carbon atoms, or between 10 and 50 carbon atoms. Item 9. Element of one of items 1 to 3, 6 and 7, in which the aliphatic group has between 1 and 10 carbon atoms, or between 1 and 6 carbon atoms, the aliphatic group preferably being substituted. Item 10.Element of item 6, wherein the aliphatic group is selected from decenyl, dodecenyl, undecenyl, tridecenyl, tetradecenyl, pentadecenyl, hexadecenyl, heptadecenyl, octadecenyl, 1,9-decadienyl, docosenyl, hexacosenyl, eicosenyl, tetracosenyl, squalenyl, farnesyl, β-carotenyl, pinenyls, dicyclopentadienyl, camphenyl, α-phellandrenyl, β-phellandrenyl, terpinenyls, β-myrcenyl, limonenyl, 2-carenyl, sabinenyl, α-cedrenyl, copaenyl, β-cedrenyl, decynyl, dodecynyl, octadecynyl, hexadecynyl, tridecynyl, tetradecynyl, and docosynyl, or a combination of at least two of these, the group being optionally substituted by one or more substituents. Item 11.The element of item 10, wherein the aliphatic group is selected from decenyl, dodecenyl, undecenyl, tridecenyl, tetradecenyl, pentadecenyl, hexadecenyl, heptadecenyl, octadecenyl, 1,9-decadienyl, docosenyl, hexacosenyl, eicosenyl, tetracosenyl, squalenyl, farnesyl, and β-carotenyl, or a combination of at least two thereof, the group being optionally substituted with one or more substituents. Item 12. Element of item 10, wherein the aliphatic group is selected from decenyl, undecenyl, octadecenyl, squalenyl, farnesyl, and β-carotenyl groups, preferably farnesyl, or a combination of at least two of these, the group being optionally substituted by one or more substituents. Item 13. Element of item 7, wherein the aliphatic group is a linear or branched group C. 1-20 alkyl, preferably C 1-10 alkyl or C 2-10alkyl, the group being optionally substituted by one or more substituents. Item 14. Element of one of items 1, 4 and 5, in which the aromatic or heteroaromatic group is a C group 6-10 aryl or C 5-12 heteroaryl, the group being optionally substituted by one or more substituents. Item 15. Element of one of items 1 to 14, wherein the group is unsubstituted. Item 16. Element of one of items 1 to 14, wherein the group is substituted by one or more substituents. Item 17. Element of item 16, wherein the substituent(s) is (are) independently selected from halogen (such as F, Cl, Br, I), -OH, oxo, alkyl, -OR 4 , -alkylOR 4 , -SH, -SR 4 , -alkylSR 4 , -SeH, -SeR 4 , -alkylSeR 4 , -CN, -N3, -C(O)OH, -C(O)OR 4 , -C(O)R 4 , -NH2, -NHR 2 , -N(R 2 )2, -NHC(O)R 2 , -C(O)NHR 2 , -C(O)NH2, -C(NR4 )R 4 , -NO2, -O- Si(R 4 )3, -Si(R 4 )3, -O-Si(OR 4 )3, -Si(OR 4 )3, -OB(R 4 )3, -B(R 4 )2, -OB(OR 4 )2, -B(OR 4 )2, -B(OH)2, -C(S)OH, -C(S)OR 4 , -SO2OR 4 , -OSO2R 4 , -SO2R 4 , -SO2NHR 4 , -SO2NH2, -NHSO2R 4 , - P(O)(OR 4 )2, optionally substituted alkenyl, alkynyl, aryl, heteroaryl, cycloalkyl or heterocycloalkyl, or a combination thereof, where R 4 is an optionally substituted alkyl, alkenyl or alkynyl group. Item 18. Element of item 1, in which the compound of Formula I is chosen from: 5 Compound 9 Compound 10 Item 19. An element of any one of items 1 to 18, further comprising an alkane or a mixture comprising an alkane and a solvent, for example the alkane comprising from 10 to 50 carbon atoms, preferably decane. Item 20. An element of any one of items 1 to 19, further comprising at least one material comprising sulfur atoms, the material comprising sulfur atoms forming a mixture with the compound, or the compound forming a coating on particles comprising a core of the material comprising sulfur atoms. Item 21. An element of item 20, wherein the material comprising sulfur atoms is a ceramic comprising sulfur atoms, for example, of the sulfide or oxysulfide type. Item 22. An element of item 21, wherein the ceramic is selected from inorganic compounds of formulae: - MGPS (for example, M a Ge b P c S d such as M 10 GeP2S 12 ); - MGPSO (e.g., M a Ge b Pc S d OR e ); - MSiPS (for example, M a Yes b P c S d tel que M 10 SiP2S 12 ); - MSiPSO (for example, M a Yes b P c S d OR e ); - MSnPS (par exemple, M a Sn b P c S d tel que M 10 SnP2S 12 ); - MSnPSO (for example, M a Sn b P c S d OR e ); - MPS (for example, M a P b S c tel que M7P3S 11 ); - MPSO (par exemple, M a P b S c OR d ); - MZPS (for example, M a Zn b P c S d ); - MZPSO (for example, M a Zn b P c S d OR e); - xM2S-yP2S5; - xM2S-yP2S5-zMX; - xM2S-yP2S5-zP2O5; - xM2S-yP2S5-zP2O5-wMX; - xM2S-yM2O-zP2S5; - xM2S-yM2O-zP2S5-wMX; - xM2S-yM2O-zP2S5-wP2O5; - xM2S-yM2O-zP2S5-wP2O5-vMX; - xM2S-ySiS2; - MPSX (par exemple, M a P b S c X d tel que M7P3S 11X, M7P2S8X, and M6PS5X); - MPSOX (e.g., MaPbScOdXe); - MGPSX (e.g., MaGebPcSdXe); - MGPSOX (e.g., MaGebPcSdOeXf); - MSiPSX (e.g., MaSibPcSdXe); - MSiPSOX (e.g., MaSibPcSdOeXf); - MSnPSX (e.g., MaSnbPcSdXe); - MSnPSOX (e.g., MaSnbPcSdOeXf); - MZPSX (e.g., MaZnbPcSdXe); - MZPSOX (e.g., MaZnbPcSdOeXf); and - M3PS4; wherein, M is an alkali metal ion, an alkaline earth metal ion or a combination thereof, and wherein when M comprises an alkaline earth metal ion, then the number of M is adjusted to achieve electroneutrality; X is selected from F, Cl, Br, I or a combination of at least two thereof; a, b, c, d, e and f are non-zero numbers and are, independently in each formula, selected to achieve electroneutrality; and v, w, x, y and z are non-zero numbers and are, independently in each formula, selected to obtain a stable compound.Item 23. Element of item 22, wherein M is selected from Li, Na, K, Rb, Cs, Be, Mg, Ca, Sr, Ba or a combination of at least two of these, preferably M is Li. Item 24. Element of one of items 21 to 23, wherein the ceramic is selected from inorganic compounds of formula Li. a P b S c X d, where a, b, c and d are such that (a + 5b) = (2c + d), for example compounds of formula Li6PS5X, wherein X is Cl, Br, I or a combination thereof, the compound may be of the argyrodite type, or the ceramic is Li6PS5Cl. Item 25. The element of any one of items 20 to 24, wherein the material comprising sulfur atoms comprises elemental sulfur, a salt comprising unoxidized sulfur atoms, a polymer comprising sulfur atoms, and / or an organic compound comprising sulfur atoms. Item 26. The element of any one of items 1 to 25, wherein the element is an electrolyte composition. Item 27. The element of item 26, further comprising a solvent. Item 28. Element of item 26 or 27, further comprising a solvating polymer, the solvating polymer preferably being chosen from polymers comprising polyether, polycarbonate, polyester, fluorinated polymer chains,or a combination or copolymer of at least two of these. Item 29. Element of one of items 26 to 28, which further comprises an alkali metal salt, preferably a lithium salt, preferably a salt comprising a cation of an alkali metal (preferably Li), and an anion selected from hexafluorophosphate (PF6-), bis(trifluoromethanesulfonyl)imide (TFSI-), bis(fluorosulfonyl)imide (FSI-), (flurosulfonyl)(trifluoromethanesulfonyl)imide ((FSI)(TFSI)-), 2-trifluoromethyl-4,5-dicyanoimidazolate (TDI-), 4,5-dicyano-1,2,3-triazolate (DCTA-), bis(pentafluoroethylsulfonyl)imide (BETI-), difluorophosphate (DFP-), tetrafluoroborate (BF4-), bis(oxalato)borate (BOB-), nitrate (NO3-), chloride (Cl-), bromide (Br-), fluoride (F-), perchlorate (ClO4-), hexafluoroarsenate (AsF6-), trifluoromethanesulfonate (SO3CF3-) (Tf-), fluoroalkylphosphate [PF3(CF2CF3)3-] (FAP-), tetrakis(trifluoroacetoxy)borate [B(OCOCF3)4]- (TFAB-), bis(1,2-benzenediolato(2-)- O,O')borate [B(C6O2)2]- (BBB-), difluoro(oxalato)borate (BF2(C2O4) -) (FOB-), an anion of formula BF2O4Rx- (where Rx = C2-4alkyl), and any combination thereof, e.g., LiTFSI or LiFSI. Item 30. An element of any of items 26 to 29, which further comprises at least one organic additive (e.g., an ionic organic additive (liquid or solid), a thiol, a plasticizer, etc.). Item 31. An element of any of items 1 to 25, wherein the element is an electrode material further comprising an electrochemically active material. Item 32. Element of item 31, wherein the compound is dispersed in the electrode material, and / or forms a coating on particles comprising the electrochemically active material and / or on particles of another component. Item 33. Element of item 31 or 32, wherein the electrochemically active material is selected from a metal oxide, a metal sulfide, a metal oxysulfide, a metal phosphate, a metal fluorophosphate,a metal oxyfluorophosphate, a metal sulfate, a metal halide, a metal fluoride, sulfur, selenium, and a combination of at least two thereof. Item 34. The element of item 33, wherein the metal of the electrochemically active material is selected from titanium (Ti), iron (Fe), manganese (Mn), vanadium (V), nickel (Ni), cobalt (Co), aluminum (Al), chromium (Cr), copper (Cu), zirconium (Zr), niobium (Nb), and a combination of at least two thereof. Item 35. The element of item 33 or 34, wherein the metal of the electrochemically active material further comprises an alkali or alkaline earth metal, preferably selected from lithium (Li), sodium (Na), potassium (K), and magnesium (Mg). Item 36. Element of one of items 31 to 35, in which the electrochemically active material is a lithium metal oxide, preferably a mixed oxide of lithium, nickel,of manganese and cobalt (NCM). Item 37. Element of one of items 31 to 35, wherein the electrochemically active material is a lithium metal phosphate, preferably a lithium iron phosphate. Item 38. Element of item 31 or 32, wherein the electrochemically active material is selected from a non-alkali or non-alkaline earth metal, an intermetallic compound, a metal oxide, a metal nitride, a metal phosphide, a metal phosphate, a metal halide, a metal fluoride, a metal sulfide, a metal oxysulfide, a carbon, silicon (Si), a silicon-carbon composite (Si-C), a silicon oxide (SiO, x ), a silicon oxide-carbon composite (SiO x -C), tin (Sn), a tin-carbon composite (Sn-C), a tin oxide (SnO x ), a tin oxide-carbon composite (SnO x-C), and a combination of at least two thereof. Item 39. The element of one of items 31 to 38, wherein the electrochemically active material further comprises a doping element. Item 40. The element of one of items 31 to 39, wherein the electrochemically active material further comprises a coating material. Item 41. The element of item 40, wherein the coating material forms a coating layer on the surface of said electrochemically active material and the compound is optionally disposed on the surface of the coating layer. Item 42. The element of item 40 or 41, wherein the coating material is selected from Li2SiO3, LiTaO3, LiAlO2, Li2O-ZrO2, LiNbO3, preferably LiNbO3, other similar coating materials and a combination of at least two thereof. Item 43. Element of item 40 or 41, wherein the coating material is an electronically conductive material, preferably carbon. Item 44.An element of one of items 31 to 43, further comprising at least one electronically conductive material, preferably selected from the group consisting of carbon black, acetylene black, graphite, graphene, carbon fibers, carbon nanofibers, carbon nanotubes, preferably carbon black, and a combination of at least two thereof. Item 45. An element of item 43 or 44, wherein the surface of said electronically conductive material is grafted with at least one aryl group of Formula II:. wherein, FG is a hydrophilic functional group; and n is a natural integer in the range 1 to 5, preferably n is in the range 1 to 3, preferably n is 1 or 2, and more preferably n is 1. Item 46. The element of item 45, wherein the hydrophilic functional group is a carboxylic acid or sulfonic acid functional group, preferably the aryl group of Formula II is p-benzoic acid or p-benzenesulfonic acid. Item 47. The element of any of items 31 to 46, which further comprises at least one additive, for example the additive being present in the core of a coated particle. Item 48. Element of item 47, wherein the additive is selected from inorganic ion-conducting materials, inorganic materials, glasses, glass-ceramics, ceramics, nano-ceramics, salts and a combination of at least two of these. Item 49.Element of item 47 or 48, wherein the additive comprises ceramic, glass or glass-ceramic particles based on fluoride, phosphide, sulfide, oxysulfide or oxide. Item 50. Element of one of items 47 to 49, wherein the additive is selected from compounds of the type LISICON, thio-LISICON, argyrodites, garnets, NASICON, perovskites, oxides, sulfides, oxysulfides, phosphides, fluorides, sulfur halides, phosphates, thio-phosphates, in crystalline and / or amorphous form, and a combination of at least two of these. Item 51. An element of any of items 47 to 50, wherein the additive is selected from inorganic compounds of formulae: - MLZO (e.g., M7La3Zr2O12, M(7-a)La3Zr2AlbO12, M(7-a)La3Zr2GabO12, M(7-a)La3Zr(2-b)TabO12, and M(7-a)La3Zr(2-b)NbbO12); - MLTaO (e.g., M7La3Ta2O12, M5La3Ta2O12, and M6La3Ta1.5Y0.5O12); - MLSnO (e.g., M7La3Sn2O12); - MAGP (e.g., M. 1+a Al a Ge2-a (PO4)3); - MATP (see example, M 1+a To the a You 2-a (PO4) 3, ); - MLTiO (for example, M 3a There (2 / 3-a) TiO3); - MZP (for example, M a Zr b (PO4) c ); - MCZP (for example, M a Ca b Zr c (PO4) d ); - MGPS (par exemple, M a Ge b P c S d tel que M 10 GeP2S 12 ); - MGPSO (for example, M a Ge b P c S d OR e ); - MSiPS (for example, M a Yes b P c S d tel que M 10 SiP2S 12 ); - MSiPSO (for example, M a Yes b P c S d OR e ); - MSnPS (par exemple, M a Sn b P c S d tel que M 10 SnP2S 12 ); - MSnPSO (for example, M a Sn b P c S d OR e); - MPS (e.g., MaPbSc such as M7P3S11); - MPSO (e.g., MaPbScOd); - MZPS (e.g., MaZnbPcSd); - MZPSO (e.g., MaZnbPcSdOe); - xM2S-yP2S5; - - - - - - - - - such as M7P3S11X, M7P2S8X, and M6PS5X); - ; - MGPSX (e.g., MaGebPcSdXe); - MGPSOX (e.g., MaGebPcSdOeXf); - MSiPSX (e.g., MaSibPcSdXe); - MSiPSOX (e.g., MaSibPcSdOeXf); - MSnPSX (e.g., M a Sn b P c S d X e ); - MSnPSOX (e.g., M a Sn b P c S d O e X f ); - MZPSX (e.g., M a Zn b P c S d X e ); - MZPSOX (e.g., M a Zn b P c S d O e X f ); - M3OX; - M2HOX; - M3PO4; - M3PS4; and - M a PO b N c(where a = 2b + 3c - 5); wherein, M is an alkali metal ion, an alkaline earth metal ion, or a combination thereof, and wherein when M comprises an alkaline earth metal ion, then the number of M is adjusted to achieve electroneutrality; X is selected from F, Cl, Br, I, or a combination of at least two thereof; a, b, c, d, e, and f are nonzero numbers and are, independently in each formula, selected to achieve electroneutrality; and v, w, x, y, and z are nonzero numbers and are, independently in each formula, selected to obtain a stable compound. Item 52. Element of item 50 or 51, wherein the additive is a ceramic comprising sulfur atoms, for example, of the sulfide or oxysulfide type, preferably as defined in one of items 22 to 24. Item 53. Element of one of items 31 to 52, which further comprises a binder. Item 54.Element of item 53, wherein the binder is selected from the group consisting of a polymer binder of polyether, polycarbonate, polyester, fluoropolymer type, and a rubber type binder, or a combination of at least two of these. Item 55. Electrode comprising the element of one of items 31 to 54, optionally on a current collector. Item 56. Electrolyte comprising the element of one of items 1 to 30. Item 57. Compound as defined in one of items 1 to 18. Item 58. Compound of item 57, which is selected from compounds 1 to 8. Item 59. Compound comprising at least one H2S trapping group and at least one saturated or unsaturated, linear or branched aliphatic group having at least 6 carbons, or at least 10 carbons, the aliphatic group being optionally substituted. Item 60. Compound according to item 59, in which the aliphatic group has from 10 to 50 carbon atoms. Item 61. Compound according to item 59 or 60, which is of formula (R.1 ) p (X 1 ) m , in which R 1 is the optionally substituted aliphatic group, X 1 is the H2S trapping group, and p and m are numbers chosen from the range 1 to 4. Item 62. Compound according to item 61, wherein p is chosen from the range 2 to 4, preferably 3. Item 63. Compound of item 61 or 62, wherein (X 1 ) mforms a triazine group. Item 64. A compound according to any of items 59 to 63, wherein the aliphatic group is unsaturated and comprises at least one carbon-carbon double bond or triple bond. Item 65. Compound according to item 64, in which the unsaturated aliphatic group is chosen from the groups decenyl, dodecenyl, undecenyl, tridecenyl, tetradecenyl, pentadecenyl, hexadecenyl, heptadecenyl, octadecenyl, 1,9-decadienyl, docosenyl, hexacosenyl, eicosenyl, tetracosenyl, squalenyl, farnesyl, β-carotenyl, pinenyls, dicyclopentadienyl, camphenyl, α-phellandrenyl, β-phellandrenyl, terpinenyls, β-myrcenyl, limonenyl, 2-carenyl, sabinenyl, α-cedrenyl, copaenyl, β-cedrenyl, decynyl, dodecynyl, octadecynyl, hexadecynyl, tridecynyl, tetradecynyl, and docosynyl, or a combination of at least two of these, the group optionally comprising one or more substituents. Item 66. Compound according to item 65,wherein the unsaturated aliphatic group is selected from decenyl, dodecenyl, undecenyl, tridecenyl, tetradecenyl, pentadecenyl, hexadecenyl, heptadecenyl, octadecenyl, 1,9-decadienyl, docosenyl, hexacosenyl, eicosenyl, tetracosenyl, squalenyl, farnesyl, β-carotenyl, and a combination of at least two of these, the group optionally comprising one or more substituents. Item 67. Compound according to item 66, wherein the unsaturated aliphatic group is selected from decenyl, undecenyl, octadecenyl, squalenyl, farnesyl, β-carotenyl, and a combination of at least two of these, the group optionally comprising one or more substituents. Item 68. Compound according to item 66, in which the unsaturated aliphatic group comprises a farnesyl group, the group optionally comprising one or more substituents, preferably a farnesyl group. Item 69. Compound according to item 59,which is selected from Compounds 1 and 6. Item 70. Composition comprising at least one compound according to one of items 57 to 69. Item 71. Composition according to item 70, which further comprises an additional component. Item 72. Composition according to item 71, in which the additional component is an alkane or a mixture comprising an alkane and a solvent, preferably wherein the alkane comprises from 10 to 50 carbon atoms, preferably the alkane is decane. Item 73. Composition according to item 72, in which the solvent is selected from dichloromethane, tetrahydrofuran, acetonitrile, N,N-dimethylformamide and a miscible combination of at least two of these, preferably the polar solvent is dichloromethane. Item 74. Composition according to one of items 70 to 73, further comprising a material comprising sulfur atoms,the composition forming a mixture including the material comprising sulfur atoms or coated particles comprising a core of the material comprising sulfur atoms, the material comprising sulfur atoms preferably being as defined in one of items 21 to 25. Item 75. Electrolyte comprising the compound as defined in one of items 57 to 69 or a composition as defined in one of items 70 to 74. Item 76. Electrolyte according to item 75, which is a liquid electrolyte comprising a salt in a solvent. Item 77. Electrolyte according to item 75, which is a solid polymer electrolyte comprising a salt in a solvating polymer, the solvating polymer preferably being selected from polymers comprising polyether, polycarbonate, polyester, fluoropolymer chains, or a combination or copolymer of at least two of these. Item 78. Electrolyte according to item 75, which is a polymer-ceramic composite solid electrolyte,the polymer preferably being selected from polymers of the polyether, polycarbonate, polyester, fluoropolymer type, or a combination or copolymer of at least two of these. Item 79. Electrolyte according to item 75, which is an inorganic solid electrolyte. Item 80. Electrolyte according to item 79, which is an inorganic solid electrolyte of the ceramic type. Item 81. Electrolyte according to item 78 or 80, in which the compound is present in a coating on the surface of the ceramic particles. Item 82. Electrolyte according to item 78 or 80, in which the compound is dispersed in the electrolyte. Item 83. Electrolyte according to one of items 75 to 82, which further comprises an alkali metal salt, preferably a lithium salt, preferably the salt comprises a cation of an alkali metal (preferably Li), and an anion chosen from the anions hexafluorophosphate (PF6-), bis(trifluoromethanesulfonyl)imide (TFSI-), bis(fluorosulfonyl)imide (FSI-),(flurosulfonyl)(trifluoromethanesulfonyl)imide ((FSI)(TFSI)-), 2-trifluoromethyl-4,5-dicyanoimidazolate (TDI-), 4,5-dicyano-1,2,3- triazolate (DCTA-), bis(pentafluoroethylsulfonyl)imide (BETI-), difluorophosphate (DFP-), tetrafluoroborate (BF4-), bis(oxalato)borate (BOB-), nitrate (NO3-), chloride (Cl-), bromide (Br-), fluoride (F-), perchlorate (ClO4-), hexafluoroarsenate (AsF6-), trifluoromethanesulfonate (SO3CF3-) (Tf-), fluoroalkylphosphate [PF3(CF2CF3)3-] (FAP-), tetrakis(trifluoroacetoxy)borate [B(OCOCF3)4]- (TFAB-), bis(1,2-benzenediolato(2-)- O,O')borate [B(C6O2)2]- (BBB-), difluoro(oxalato)borate (BF2(C2O4) -) (FOB-), an anion of formula BF2O4R, x - (where R x = C 2-4alkyl), and one of their combinations, for example LiTFSI or LiFSI. Item 84. Electrolyte according to one of items 75 to 83, which further comprises at least one organic additive (for example, an ionic organic additive (liquid or solid), a thiol, a plasticizer, etc.). Item 85. Coated particles for use in an electrochemical cell: said coated particle comprising: a core comprising an electrochemically active material, an electronically conductive material or an ionically conductive inorganic material; and a coating material comprising a compound as defined in one of items 57 to 69, or a composition as defined in one of items 70 to 74, the coating material being disposed on the surface of the core; or said coated particle comprising the composition as defined in item 74. Item 86. Coated particles according to item 85, wherein the coating material forms a homogeneous coating layer on the surface of the core. Item 87.Coated particles according to item 85, in which the coating material forms a coating layer on at least a portion of the core surface. Item 88. Coated particles according to item 87, in which the coating material is heterogeneously dispersed on the core surface. Item 89. Coated particles according to any of items 85 to 88, which are used in an electrode material. Item 90. Coated particles according to any of items 85 to 88, which are used in an electrolyte. Item 91. Coated particles according to any of items 85 to 88, which are used in a current collector or an electrochemical cell surface (such as an inner surface of a case or bag, a surface of a substrate (film) included in a cell, etc.). Item 92.A method of manufacturing coated particles as defined in one of items 85 to 91, the method comprising at least one step of coating at least a portion of the surface of the core with the coating material. Item 93. Method according to item 92, wherein the coating step is carried out by a dry coating process. Item 94. Method according to item 92, wherein the coating step is carried out by a wet coating process. Item 95. Method according to item 94, wherein the wet coating process is a mechanical coating process. Item 96. Method according to item 95, wherein the mechanical coating process is a mechanosynthesis or mechanofusion process. Item 97. Method according to one of items 92 to 96, which further comprises a step of grinding the electrochemically active material, the electronically conductive material or the ionically conductive inorganic material of the core of the coated particle. Item 98.Method according to item 97, wherein the coating and grinding steps are carried out simultaneously, sequentially, or partially overlap in time. Item 99. Method according to item 98, wherein the coating and grinding steps are carried out simultaneously. Item 100. Electrode material comprising: - coated particles as defined in one of items 85 to 91, wherein the core of the coated particle comprises an electrochemically active material; and / or - an electrochemically active material and a compound as defined in one of items 57 to 69, a composition as defined in one of items 70 to 74, or coated particles as defined in one of items 85 to 91. Item 101. Electrode material according to item 100, wherein the electrode material comprises at least one material or compound comprising sulfur atoms, or is for use with an electrolyte comprising a material or compound comprising sulfur atoms.Item 102. Electrode material according to item 100 or 101, wherein the core of the coated particle comprises the electrochemically active material. Item 103. Electrode material according to one of items 100 to 102, wherein the electrochemically active material is as defined in one of items 33 to 43. Item 104. Electrode material according to one of items 100 to 103, which further comprises at least one electronically conductive material, preferably as defined in one of items 44 to 46. Item 105. Electrode material according to one of items 100 to 104, which further comprises at least one additive. Item 106. Electrode material according to item 105, wherein the core of the coated particle comprises the additive. Item 107. Electrode material according to item 105 or 106, in which the additive is as defined in one of items 48 to 52. Item 108.Electrode material according to one of items 100 to 107, which further comprises a binder, preferably selected from the group consisting of a polymer binder of polyether, polycarbonate, polyester, fluoropolymer type, and a rubber type binder, or a combination of at least two thereof. Item 109. Electrode comprising the electrode material as defined in one of items 100 to 108 optionally on a current collector. Item 110. Electrochemical cell comprising a negative electrode, a positive electrode and an electrolyte, wherein at least one of the positive electrode or the negative electrode is as defined in item 55 or 109, preferably the positive electrode. Item 111. Electrochemical cell comprising a negative electrode, a positive electrode and an electrolyte, in which the electrolyte is as defined in one of items 56 and 74 to 84. Item 112.An electrochemical cell according to item 110 or 111, wherein the negative electrode comprises an electrochemically active material comprising an alkali metal, an alkaline earth metal, an alloy comprising at least one alkali or alkaline earth metal, a non-alkaline and non-alkaline earth metal, or an alloy or an intermetallic compound. Item 113. An electrochemical cell according to item 112, wherein the electrochemically active material of the negative electrode comprises metallic lithium or an alloy including or based on metallic lithium. Item 114. Electrochemical cell according to item 112 or 113, in which the electrochemically active material of the negative electrode is in the form of a film having a thickness in the range from about 5 µm to about 500 µm, upper and lower limits inclusive, preferably in the range from about 10 µm to about 100 µm, upper and lower limits inclusive. Item 115.Electrochemical cell according to one of items 110 or 111, in which the positive electrode is pre-lithiated and the negative electrode is substantially free of lithium. Item 116. Electrochemical cell according to one of items 115, in which the negative electrode is lithiated in situ during the cycling of said electrochemical cell. Item 117. Battery comprising at least one electrochemical cell as defined in one of items 110 to 116. Item 118. Battery according to item 117, which is a battery selected from a lithium battery, a lithium-ion battery, a sodium battery, a sodium-ion battery, a magnesium battery, a magnesium-ion battery. Item 119. Battery according to item 117, which is a lithium battery or a lithium-ion battery. Item 120. Battery according to one of items 117 to 119, which is a so-called all-solid-state battery. Item 121.Method for trapping H2S comprising a step of contacting a compound as defined in one of items 57 to 69 with a source of H2S. Item 122. Method according to item 121, which further comprises dissolving the compound. Item 123. Method according to item 121 or 122, wherein the source of H2S is a ceramic comprising sulfur atoms, for example, of the sulfide or oxysulfide type. Item 124. Method according to item 123, wherein the ceramic is chosen from inorganic compounds of formulae: - MGPS (for example, M. a Ge b P c S d such as M 10 GeP2S 12 ); - MGPSO (e.g., M a Ge b P c S d O e); - MSiPS (e.g., MaSibPcSd such as M10SiP2S12); - MSiPSO (e.g., MaSibPcSdOe); - MSnPS (e.g., MaSnbPcSd such as M10SnP2S12); - MSnPSO (e.g., MaSnbPcSdOe); - MPS (e.g., MaPbSc such as M7P3S11); - MPSO (e.g., MaPbScOd); - MZPS (e.g., MaZnbPcSd); - MZPSO (e.g., MaZnbPcSdOe); - xM2S-yP2S5; - xM2S-yP2S5-zMX; - xM2S-yP2S5-zP2O5; - xM2S-yP2S5-zP2O5-wMX; - xM2S-yM2O-zP2S5; - xM2S-yM2O-zP2S5-wMX; - xM2S-yM2O-zP2S5-wP2O5; - xM2S-yM2O-zP2S5-wP2O5-vMX; - xM2S-ySiS2; - MPSX (e.g., MaPbScXd such as M7P3S11X, M7P2S8X, and M6PS5X); - MPSOX (e.g., MaPbScOdXe); - MGPSX (e.g., M a Ge b P c S d X e ); - MGPSOX (e.g., M a Ge b P c S d O e X f ); - MSiPSX (e.g., M a If b P c S d X e ); - MSiPSOX (e.g., M a If b P c Sd O e X f ); - MSnPSX (e.g., M a Sn b P c S d X e ); - MSnPSOX (e.g., M a Sn b P c S d O e X f ); - MZPSX (e.g., M a Zn b P c S d X e ); - MZPSOX (e.g., M a Zn b P c S d O e X f); and - M3PS4; wherein, M is an alkali metal ion, an alkaline earth metal ion or a combination thereof, and wherein when M comprises an alkaline earth metal ion, then the number of M is adjusted to achieve electroneutrality; X is selected from F, Cl, Br, I or a combination of at least two thereof; a, b, c, d, e and f are non-zero numbers and are, independently in each formula, selected to achieve electroneutrality; and v, w, x, y and z are non-zero numbers and are, independently in each formula, selected to obtain a stable compound. Item 125. A method according to item 124, wherein M is selected from Li, Na, K, Rb, Cs, Be, Mg, Ca, Sr, Ba or a combination of at least two thereof, preferably N is Li. Item 126.A method according to any one of items 123 to 125, wherein the ceramic is selected from inorganic compounds of formula LiaPbScXd, where a, b, c and d are such that (a + 5b) = (2c + d), for example compounds of formula Li6PS5X, where X is Cl, Br, I or a combination thereof, the compound possibly being of the argyrodite type. Item 127. A method according to any one of items 123 to 125, wherein the ceramic is Li6PS5Cl. Item 128. A method according to any one of items 121 or 122, wherein the source of H2S comprises H2S, elemental sulfur, a salt comprising unoxidized sulfur atoms, a polymer comprising sulfur atoms, an organic compound comprising sulfur atoms, or a combination of two or more thereof.BRIEF DESCRIPTION OF THE FIGURES Figure 1 shows thermogravimetric analysis results for uncoated Li6PS5Cl sulfide solid electrolyte (curve 1), for Li6PS5Cl particles coated with a mixture of decane and farnesene (curve 2), and for Li6PS5Cl particles coated with a mixture of decane and the H2S trapping organic molecule (curve 3), as described in Example 2. Figures 2(a) to 2(j) show the ionic conductivity results as a function of temperature for the sulfide-based electrolyte films and the H2S trapping organic molecule content for (a) Cells 1 (■), 2 (▲), 3 (●), 4 (♦), and (b) to (j) for Cells 5 to 13, respectively, as described in Example 3(b).Figure 3 shows a plot of the volume of gaseous H2S normalized by the mass of argyrodite and generated as a function of time for the sulfide-based electrolyte films and the rate of organic H2S trapping molecule for (a) electrolyte films 1-4, (b) electrolyte films 1 and 5-9, and (c) electrolyte films 1 and 10-13, as a function of their compression and densification, as described in Example 4. DETAILED DESCRIPTION All technical and scientific terms and expressions used herein have the same definitions as those generally understood by those skilled in the art of the present technology. Definitions of certain terms and expressions used are nevertheless provided below. When the term "about" is used herein, it means approximately, in the region of, or around.For example, when the term "about" is used in connection with a numerical value, it modifies it above and below by a variation of 10% from its nominal value. This term may also take into account, for example, the experimental error of a measuring device or rounding. When a range of values ​​is referred to in this application, the lower and upper bounds of the range are, unless otherwise indicated, always included in the definition. When a range of values ​​is referred to in this application, then all intermediate intervals and sub-intervals, as well as individual values ​​included in the ranges of values, are included in the definition. When the article "a" is used to introduce an element in this application, it does not have the meaning of "a single one", but rather of "one or more".Of course, where the description states that a particular step, component, element, or feature "may" or "could" be included, that particular step, component, element, or feature is not required to be included in every embodiment. The chemical structures described herein are drawn following the conventions of the art. Also, where an atom, such as a carbon atom, as drawn appears to include an incomplete valency, then it is assumed that the valency is satisfied by one or more hydrogen atoms even if they are not explicitly drawn. The term "aliphatic" generally refers to a straight or branched hydrocarbon moiety that may include non-aromatic rings. The term includes saturated (such as alkyl) or unsaturated (such as alkenyl or alkynyl) groups unless otherwise indicated. The aliphatic moiety may be optionally substituted.As used herein, the term "alkyl" refers to saturated hydrocarbons having between one and sixty carbon atoms, including straight or branched alkyl groups. Non-limiting examples of alkyl groups may include methyl, ethyl, propyl, butyl, pentyl, hexyl, heptyl, octyl, nonyl, decyl, docecyl, hexadecyl, octadecyl, isopropyl, tert-butyl, sec-butyl, isobutyl, isopentyl, neopentyl, phytanyl, and so on. When the alkyl group is located between two functional groups, then the term alkyl also includes alkylene groups such as methylene, ethylene, propylene, and so on. The terms "Cm-Cnalkyl" and "Cm-Cnalkylene" refer respectively to an alkyl or alkylene group having from the indicated number "m" to the indicated number "n" of carbon atoms.As used herein, the term "alkenyl" refers to optionally substituted unsaturated hydrocarbons having between two and sixty carbon atoms and having at least one double bond between two carbon atoms, including straight or branched alkenyl groups. Non-limiting examples of alkenyl groups may include vinyl, allyl, 1-propen-2-yl, 1-buten-3-yl, 1-buten-4-yl, 2-buten-4-yl, 1-penten-5-yl, 1,3-pentadien-5-yl, any of the unsaturated aliphatic alkenyl groups described herein, and so on. When the alkenyl group is located between two functional groups, then the term alkenyl also includes alkenylene groups such as vinylene, allylene, 1-propen-2-ylene, 1-buten-3-ylene, and so on. The terms "C. m -C n alkenyl" and "C m -C nalkenylene" refer respectively to an alkenyl or alkenylene group having from the indicated number "m" to the indicated number "n" of carbon atoms. As used herein, the term "alkynyl" refers to unsaturated hydrocarbons having between two and sixty carbon atoms and having at least one triple bond between two carbon atoms, including straight or branched alkynyl groups. Non-limiting examples of alkynyl groups may include ethynyl, 1-propyn-3-yl, 1-butyn-4-yl, 2-butyn-4-yl, 1-pentyn-5-yl, 1,3-pentadiyn-5-yl, any of the unsaturated aliphatic alkynyl groups described herein, etc. When the alkynyl group is located between two functional groups, then the term alkynyl also includes alkynylene groups such as ethynylene, 1-propyn-3-ylene, 1-butyn-4-ylene, and so on.The terms "Cm-Cn-alkynylene" and "Cm-Cn-alkynylene" refer respectively to an alkynyl or alkynylene moiety having from the indicated number "m" to the indicated number "n" of carbon atoms. As used herein, the term "cycloalkyl" as used herein refers to a group comprising one or more saturated or partially unsaturated (non-aromatic) carbocyclic rings comprising from 3 to 15 members in a monocyclic or polycyclic ring system, including spiro (sharing one atom), fused (sharing at least one bond), or bridged carbocycles and may be optionally substituted. Examples of cycloalkyl groups include, but are not limited to, cyclopropyl, cyclobutyl, cyclopentyl, cyclopenten-1-yl, cyclopenten-2-yl, cyclopenten-3-yl, cyclohexyl, cyclohexen-1-yl, cyclohexen-2-yl, cyclohexen-3-yl, cycloheptyl, and so on. When the cycloalkyl group is located between two functional groups, the term cycloalkylene may also be used.The terms "Cm-Ccycloalkyl" and "Cm-Ccycloalkylene" refer, respectively, to a cycloalkyl or cycloalkylene group having from the indicated number "m" to the indicated number "n" of carbon atoms. As used herein, the term "heterocycloalkyl" refers to a group comprising a saturated or partially unsaturated (non-aromatic) carbocyclic ring comprising from 3 to 15 members in a monocyclic or polycyclic system, including spiro (sharing one atom), fused (sharing at least one bond), or bridged rings and may be optionally substituted, and having carbon atoms and from 1 to 4 heteroatoms (e.g., N, O, S or P) or groups containing such heteroatoms (e.g., NH, NR. x (R xis an alkyl, acyl, aryl, heteroaryl, or cycloalkyl group), PO2, SO, SO2, and other similar groups). Heterocycloalkyl groups may be attached to a carbon atom or a heteroatom (e.g., via a nitrogen atom) where possible. The term heterocycloalkyl includes both unsubstituted and substituted heterocycloalkyl groups. When the heterocycloalkyl group is located between two functional groups, the term heterocycloalkylene may also be used. The terms "C m -C n heterocycloalkyl” and “C m -C nheterocycloalkylene” refers to a heterocycloalkyl or heterocycloalkylene group having from the indicated number “m” to the indicated number “n” of ring atoms, including carbon atoms and heteroatoms, respectively. As used herein, the term “aromatic” or “aryl” refers to functional groups comprising rings having aromatic character having from 6 to 14 ring atoms, preferably 6 ring atoms. The term “aryl” refers to both monocyclic and conjugated polycyclic systems. The term “aryl” also includes substituted or unsubstituted groups. Examples of aryl groups include, but are not limited to, phenyl, benzyl, phenethyl, 1-phenylethyl, tolyl, naphthyl, biphenyl, terphenyl, indenyl, benzocyclooctenyl, benzocycloheptenyl, azulenyl, acenaphthylenyl, fluorenyl, phenanthrenyl, anthracenyl, perylenyl, and so on.The terms "Cm-Cnaryl" and "Cm-Cnarylene" refer respectively to an aryl or arylene group having from the indicated number "m" to the indicated number "n" of carbon atoms. The term "heteroaromatic" or "heteroaryl" denotes an aromatic group having 4n+2 conjugated π(pi) electrons in which n is a number from 1 to 3, for example having from 5 to 18 ring atoms, preferably 5, 6, or 9 ring atoms; and having, in addition to the carbon atoms, from 1 to 5 heteroatoms selected from oxygen, nitrogen and sulfur or groups containing such heteroatoms or groups containing such heteroatoms (for example, NH and NR. x (R xis an alkyl, acyl, aryl, heteroaryl, or cycloalkyl group), SO, and other similar groups). A polycyclic ring system includes at least one heteroaromatic ring. Heteroaryls may be directly attached, or linked through a C1-C3alkyl group (also called heteroarylalkyl or heteroaralkyl). Heteroaryl groups may be linked through a carbon atom or to a ring heteroatom (e.g., via a nitrogen atom), where possible. The terms "C m -C n heteroaryl" and "C m - C nheteroarylene" refer respectively to a heteroaryl or heteroarylene group having from the indicated number "m" to the indicated number "n" of ring atoms, including carbon atoms and heteroatoms. Generally, the term "substituted" means that one or more hydrogen atoms on the designated group are replaced by a suitable substituent. The substituents or combinations of substituents contemplated in this specification are those resulting in the formation of a chemically stable compound.Examples of substituents include halogen atoms (such as F, Cl, Br, I) and hydroxyl, oxo, alkyl, alkoxyl, alkoxyalkyl, thiol, thioalkyl, alkylthioalkyl, selenide, alkylselenide, nitrile, azido, carboxylate, alkoxycarbonyl, alkylcarbonyl, primary, secondary or tertiary amine, amide, imine, nitro, silane, siloxane, borane, boronate, borate, boronic acid, thiocarboxylate, sulfonyl, sulfonate, sulfonamide, alkenyl, alkynyl, aryl, heteroaryl, cycloalkyl, heterocycloalkyl, or a combination thereof. The present technology relates, among other things, to an element of an electrochemical cell, the element being selected from an electrode material and an electrolyte composition, the element comprising a compound of Formula I:. in which: R 1is, independently at each occurrence, chosen from a saturated or unsaturated, linear or branched aliphatic group and a cycloalkyl, heterocycloalkyl, aromatic or heteroaromatic group, the aliphatic, aromatic or heteroaromatic group being optionally substituted; and R 2 and R 3 are, independently at each occurrence, chosen from a hydrogen atom or a saturated or unsaturated, linear or branched aliphatic group, or R 2 and R 3 together with the adjacent carbon atom form a carbonyl group. The R group 1 may be the same at each occurrence or may be different. For example, R 1 is at least one occurrence a saturated or unsaturated, linear or branched aliphatic group, optionally substituted. In the alternative, R 1 is at each occurrence a saturated or unsaturated, linear or branched aliphatic group possibly substituted. According to another example, R 1is at least one occurrence an optionally substituted aromatic or heteroaromatic group or, alternatively, R 1is at each occurrence an optionally substituted aromatic or heteroaromatic group. In some examples, the aliphatic group is unsaturated and comprises at least one carbon-carbon double bond or triple bond (alkenyl or alkynyl). Alternatively, the aliphatic group is saturated (alkyl). Preferably, the aliphatic group has at least 6 carbon atoms, or at least 10 carbon atoms, or between 10 and 50 carbon atoms. In another alternative, the aliphatic group has between 1 and 10 carbon atoms, or between 1 and 6 carbon atoms, the aliphatic group preferably being substituted.For example, the unsaturated aliphatic group is selected from decenyl, dodecenyl, undecenyl, tridecenyl, tetradecenyl, pentadecenyl, hexadecenyl, heptadecenyl, octadecenyl, 1,9-decadienyl, docosenyl, hexacosenyl, eicosenyl, tetracosenyl, squalenyl, farnesyl, β-carotenyl, pinenyls, dicyclopentadienyl, camphenyl, α-phellandrenyl, β-phellandrenyl, terpinenyls, β-myrcenyl, limonenyl, 2-carenyl, sabinenyl, α-cedrenyl, copaenyl, β-cedrenyl, decynyl, dodecynyl, octadecynyl, hexadecynyl, tridecynyl, tetradecynyl, and docosynyl, or a combination of at least two of these, the group being optionally substituted by one or more substituents.Among these, the aliphatic group may be an alkenyl and be selected from the groups decenyl, dodecenyl, undecenyl, tridecenyl, tetradecenyl, pentadecenyl, hexadecenyl, heptadecenyl, octadecenyl, 1,9-decadienyl, docosenyl, hexacosenyl, eicosenyl, tetracosenyl, squalenyl, farnesyl, and β-carotenyl, or a combination of at least two of these, the group being optionally substituted by one or more substituents, preferably selected from the groups decenyl, undecenyl, octadecenyl, squalenyl, farnesyl, and β-carotenyl, preferably farnesyl, or a combination of at least two of these, the group being optionally substituted by one or more substituents. The aliphatic group can also be saturated and chosen from a linear or branched group C. 1-20 alkyl, preferably C 1-10 alkyl or C 2-10alkyl, the group being optionally substituted by one or more substituent(s). According to other examples, the aromatic or heteroaromatic group is a C group 6-10 aryl or C 5-12 heteroaryl, the group being optionally substituted with one or more substituents. In some examples, the group is unsubstituted. In other examples, the group is substituted with one or more substituents. Non-limiting examples of substituents include halogen (such as F, Cl, Br, I), -OH, oxo, alkyl, -OR 4 , - alkylOR 4 , -SH, -SR 4 , -alkylSR 4 , -SeH, -SeR 4 , -alkylSeR 4 , -CN, -N3, -C(O)OH, -C(O)OR 4 , - C(O)R 4 , -NH2, -NHR 2 , -N(R 2 )2, -NHC(O)R 2 , -C(O)NHR 2 , -C(O)NH2, -C(NR 4 )R 4 , -NO2, -O- Si(R 4 )3, -Si(R 4 )3, -O-Si(OR 4 )3, -Si(OR 4 )3, -OB(R 4)3, -B(R 4 )2, -OB(OR 4 )2, -B(OR 4 )2, -B(OH)2, -C(S)OH, -C(S)OR 4 , -SO2OR 4 , -OSO2R 4 , -SO2R 4 , -SO2NHR 4 , -SO2NH2, -NHSO2R 4 , - P(O)(OR 4 )2, optionally substituted alkenyl, alkynyl, aryl, heteroaryl, cycloalkyl or heterocycloalkyl, or a combination thereof, where R 4 is an optionally substituted alkyl, alkenyl or alkynyl group. In the present element, the compound of Formula I may be chosen from: Compound 2 Compound 11 and Compound 12. In one embodiment, the element may further comprise an alkane or a mixture comprising an alkane and a solvent (e.g., dichloromethane, tetrahydrofuran, acetonitrile, N,N-dimethylformamide, or a miscible combination thereof), wherein the alkane preferably comprises from 10 to 50 carbon atoms. An exemplary alkane includes decane. In some examples, the element further comprises at least one material comprising sulfur atoms, wherein the material comprising sulfur atoms forms a mixture with the compound, or wherein the compound forms a coating on particles comprising a core of the material comprising sulfur atoms. For example, the material comprising sulfur atoms is a particulate inorganic compound such as a ceramic comprising sulfur atoms, e.g., a sulfide or oxysulfide ceramic.Non-limiting examples of such ceramics include inorganic compounds of one of the MGPS formulae (e.g., M. a Ge b P c S d such as M 10 GeP2S 12 ); MGPSO (e.g., M a Ge b P c S d O e ); MSiPS (e.g., M a If b P c S d such as M 10 SiP2S 12 ); MSiPSO (e.g., M a If b P c S d O e ); MSnPS (e.g., M a Sn b P c S d such as M 10 SnP2S 12 ); MSnPSO (e.g., M a Sn b P c S d O e ); MPS (e.g., M a P b S c such as M7P3S 11 ); MPSO (e.g., M a P b S c O d ); MZPS (e.g., M a Zn b P c S d); MZPSO (par exemple, M a Zn b P c S d O e ); xM2S-yP2S5; xM2S-yP2S5-zMX; xM2S-yP2S5-zP2O5; xM2S-yP2S5-zP2O5- wMX; xM2S-yM2O-zP2S5; xM2S-yM2O-zP2S5-wMX; xM2S-yM2O-zP2S5-wP2O5; xM2S- yM2O-zP2S5-wP2O5-vMX; xM2S-ySiS2; MPSX (par exemple, M a P b S c X d tel que M7P3S 11 X, M7P2S8X, et M6PS5X); MPSOX (par exemple, M a P b S c O d X e ); MGPSX (par exemple, M a Ge b P c S d X e ); MGPSOX (par exemple, M a Ge b P c S d O e X f ); MSiPSX (par exemple, M a Si b P c S d X e ); MSiPSOX (par exemple, M a Si b P c S d O e X f ); MSnPSX (par exemple, M a Sn b P c S d X e); MSnPSOX (e.g., M a Sn b P c S d O e X f ); MZPSX (e.g., M a Zn b P c S d X e ); MZPSOX (e.g., M a Zn b P c S d O e X f); and M3PS4; wherein: M is an alkali metal ion, an alkaline earth metal ion or a combination thereof, and wherein when M comprises an alkaline earth metal ion, then the number of M is adjusted to achieve electroneutrality, for example M may be selected from Li, Na, K, Rb, Cs, Be, Mg, Ca, Sr, Ba or a combination of at least two thereof, preferably M is Li; X is selected from F, Cl, Br, I or a combination of at least two thereof; a, b, c, d, e and f are non-zero numbers and are, independently in each formula, selected to achieve electroneutrality; and v, w, x, y and z are non-zero numbers and are, independently in each formula, selected to obtain a stable compound. In one example, the ceramic is selected from inorganic compounds of formula Li a P b S c X d, where a, b, c and d are such that (a + 5b) = (2c + d), for example compounds of formula Li6PS5X, in which X is Cl, Br, I or a combination thereof, for example Li6PS5Cl. The compound may be of the argyrodite type. According to other examples, the material comprising sulfur atoms comprises elemental sulfur, a salt comprising unoxidized sulfur atoms, a polymer comprising sulfur atoms, and / or an organic compound comprising sulfur atoms. According to one example, the element is an electrolyte composition, for example further comprising a solvent and / or a solvating polymer. For example, the solvating polymer may be selected from polymers comprising polyether, polycarbonate, polyester, fluoropolymer chains, or a combination or copolymer of at least two of these. When the element is an electrolyte composition, it may also further comprise an alkali metal salt, preferably a lithium salt,preferably a salt comprising a cation of an alkali metal (preferably Li), and an anion selected from hexafluorophosphate (PF6-), bis(trifluoromethanesulfonyl)imide (TFSI-), bis(fluorosulfonyl)imide (FSI-), (flurosulfonyl)(trifluoromethanesulfonyl)imide ((FSI)(TFSI)-), 2-trifluoromethyl-4,5-dicyanoimidazolate (TDI-), 4,5-dicyano-1,2,3-triazolate (DCTA-), bis(pentafluoroethylsulfonyl)imide (BETI-), difluorophosphate (DFP-), tetrafluoroborate (BF4-), bis(oxalato)borate (BOB-), nitrate (NO3-), chloride (Cl-), bromide (Br-), fluoride (F-), perchlorate (ClO4-), hexafluoroarsenate (AsF6-), trifluoromethanesulfonate (SO3CF3-) (Tf-), fluoroalkylphosphate [PF3(CF2CF3)3-] (FAP-), tetrakis(trifluoroacetoxy)borate [B(OCOCF3)4]- (TFAB-), bis(1,2-benzenediolato(2-)- O,O')borate [B(C6O2)2]- (BBB-), difluoro(oxalato)borate (BF2(C2O4) -) (FOB-), an anion of formula BF2O4R, x - (where R x = C 2-4alkyl), and a combination thereof, for example, LiTFSI or LiFSI. The element may also further comprise at least one organic additive (e.g., an ionic organic additive (liquid or solid), a thiol, a plasticizer, etc.). In another embodiment, the element is an electrode material further comprising an electrochemically active material. In the electrode material, the compound may be dispersed in the electrode material, and / or form a coating on particles comprising the electrochemically active material and / or on particles of another component. In some examples, the electrochemically active material is preferably selected from a metal oxide, a metal sulfide, a metal oxysulfide, a metal phosphate, a metal fluorophosphate, a metal oxyfluorophosphate, a metal sulfate, a metal halide, a metal fluoride, sulfur, selenium, and a combination of two or more thereof.Non-limiting examples of the metal of the electrochemically active material include titanium (Ti), iron (Fe), manganese (Mn), vanadium (V), nickel (Ni), cobalt (Co), aluminum (Al), chromium (Cr), copper (Cu), zirconium (Zr), niobium (Nb) and a combination of at least two thereof, preferably the metal of the electrochemically active material further comprising an alkali or alkaline earth metal, preferably selected from lithium (Li), sodium (Na), potassium (K) and magnesium (Mg). In one example, the electrochemically active material is a lithium metal oxide, preferably a mixed oxide of lithium, nickel, manganese and cobalt (NCM). Alternatively, the electrochemically active material is a lithium metal phosphate, preferably a lithium iron phosphate.According to other examples, the electrochemically active material is selected from a non-alkaline or non-alkaline earth metal, an intermetallic compound, a metal oxide, a metal nitride, a metal phosphide, a metal phosphate, a metal halide, a metal fluoride, a metal sulfide, a metal oxysulfide, a carbon, silicon (Si), a silicon-carbon (Si-C) composite, a silicon oxide (SiO. x ), a silicon oxide-carbon composite (SiO x -C), tin (Sn), a tin-carbon composite (Sn-C), a tin oxide (SnO x ), a tin oxide-carbon composite (SnO x-C), and a combination of at least two thereof. The electrochemically active material may further comprise a doping element and / or a coating material. For example, the coating material may form a coating layer on the surface of said electrochemically active material, the compound optionally being disposed on the surface of the coating layer. Non-limiting examples of coating material include Li2SiO3, LiTaO3, LiAlO2, Li2O-ZrO2, LiNbO3, preferably LiNbO3, other similar coating materials and a combination of at least two thereof, or an electronically conductive material, preferably carbon, for example selected from carbon black, acetylene black, graphite, graphene, carbon fibers, carbon nanofibers, carbon nanotubes, preferably carbon black, or a combination of at least two thereof.The surface of the electronically conductive material is grafted with at least one aryl group of Formula II:. wherein, FG is a hydrophilic functional group; and n is a natural integer in the range of 1 to 5, preferably n is in the range of 1 to 3, preferably n is 1 or 2, and more preferably n is 1. In one example, the hydrophilic functional group is a carboxylic acid or sulfonic acid functional group, preferably the aryl group of Formula II is p-benzoic acid or p-benzenesulfonic acid. In some embodiments, the element further comprises at least one additive, for example the additive may be present in the core of a coated particle. For example, the additive is selected from inorganic ion-conducting materials, inorganic materials, glasses, glass-ceramics, ceramics, nano-ceramics, salts and a combination of at least two of these, preferably ceramic, glass or glass-ceramic particles based on fluoride, phosphide,of sulfide, oxysulfide or oxide. For example, the additive may be selected from compounds of the LISICON, thio-LISICON, argyrodites, garnets, NASICON, perovskites, oxides, sulfides, oxysulfides, phosphides, fluorides, sulfur halides, phosphates, thio-phosphates, in crystalline and / or amorphous form, and a combination of at least two of these. Non-limiting examples of ceramic, glass, or glass-ceramic particles include inorganic compounds of the formulae MLZO (e.g., M7La3Zr2O12, M(7-a)La3Zr2AlbO12, M(7-a)La3Zr2GabO12, M(7-a)La3Zr(2-b)TabO12, and M(7-a)La3Zr(2-b)NbbO12); MLTaO (e.g., M7La3Ta2O12, M5La3Ta2O12, and M6La3Ta1.5Y0.5O12); MLSnO (e.g., M7La3Sn2O12); MAGP (e.g., M1+aAlaGe2-a(PO4)3); MATP (e.g., M1+aAlaTi2- a(PO4)3,); MLTiO (e.g., M3aLa(2 / 3-a)TiO3); MZP (e.g., MaZrb(PO4)c); MCZP (e.g., MaCabZrc(PO4)d); MGPS (e.g.,MaGebPcSd such as M10GeP2S12); MGPSO (e.g., MaGebPcSdOe); MSiPS (e.g., MaSibPcSd such as M10SiP2S12); MSiPSO (e.g., MaSibPcSdOe); MSnPS (e.g., MaSnbPcSd such as M10SnP2S12); MSnPSO (e.g., MaSnbPcSdOe); MPS (e.g., MaPbSc such as M7P3S11); MPSO (e.g., MaPbScOd); MZPS (e.g., MaZnbPcSd); MZPSO (e.g., MaZnbPcSdOe); xM2S-yP2S5; xM2S-yP2S5-zMX; xM2S-yP2S5-zP2O5; xM2S-yP2S5-zP2O5-wMX; xM2S-yM2O-zP2S5; xM2S-yM2O-zP2S5-wMX; xM2S-yM2O-zP2S5-wP2O5; xM2S-yM2O-zP2S5-wP2O5-vMX; xM2S-ySiS2; MPSX (e.g., MaPbScXd such as M7P3S11X, M7P2S8X, and M6PS5X (such as Li6PS5Cl)); MPSOX (e.g., MaPbScOdXe); MGPSX (e.g., MaGebPcSdXe); MGPSOX (e.g., MaGebPcSdOeXf); MSiPSX (e.g., MaSibPcSdXe); MSiPSOX (e.g., MaSibPcSdOeXf); MSnPSX (e.g., MaSnbPcSdXe); MSnPSOX (e.g., MaSnbPcSdOeXf); MZPSX (e.g., MaZnbPcSdXe); MZPSOX (e.g.,MaZnbPcSdOeXf); M3OX; M2HOX; M3PO4; M3PS4; and MaPObNc (where a = 2b + 3c - 5); wherein: M is an alkali metal ion, an alkaline earth metal ion or a combination thereof, and wherein when M comprises an alkaline earth metal ion, then the number of M is adjusted to achieve electroneutrality; X is selected from F, Cl, Br, I or a combination of at least two thereof; a, b, c, d, e and f are non-zero numbers and are, independently in each formula, selected to achieve electroneutrality; and v, w, x, y and z are non-zero numbers and are, independently in each formula, selected to obtain a stable compound. According to one example, the additive is a ceramic comprising sulfur atoms, for example, of the sulfide or oxysulfide type, preferably as defined above. According to one embodiment, the element further comprises a binder,preferably selected from the group consisting of a polymer binder of polyether, polycarbonate, polyester, fluoropolymer type, and a rubber type binder, or a combination of at least two of these. The present technology also relates to an electrode comprising the element as defined herein as an electrode material, optionally on a current collector. The present technology also relates to an electrolyte comprising the element as defined herein as an electrolyte composition. Another aspect of the present technology relates to compounds as defined above, for example, compounds 1 to 8. The present technology also relates to H2S trapping compounds and to compositions, materials, cells, accumulators and methods comprising them. More particularly, the compound comprises at least one H2S trapping group and at least one aliphatic group, saturated or unsaturated, linear or branched, and having at least 6 carbons,or at least 10 carbons, the aliphatic group being optionally substituted. For example, the compound is of formula (R, 1 )p(X 1 )m, in which R 1 is the optionally substituted aliphatic group, X 1 is the H2S trapping group, and p and m are numbers chosen from the range 1 to 4, preferably which p is chosen from the range 2 to 4, preferably 3. According to a variant of interest, (X 1 )m forms a triazine group. In some examples, R 1comprises at least one substituent, wherein the substituent may allow the compound to be grafted onto a surface such as a surface of an inorganic compound, an electronically conductive material, an electrochemically active material, etc. In other embodiments, the substituent comprises bonding the compound to a surface such as a surface of an inorganic compound, an electronically conductive material, an electrochemically active material, etc. In one example, the aliphatic group has from 10 to 50 carbon atoms, or from 8 to 60, or from 10 to 30, or from 10 to 20 carbon atoms. In one example, the aliphatic group is saturated. In another example, the aliphatic group is unsaturated and comprises at least one carbon-carbon double bond or triple bond. In some cases, the unsaturated aliphatic moiety as defined herein includes a single carbon-carbon double bond or triple bond, e.g., alkenyl, alkynyl, or acyclic olefinyl.Alternatively, the unsaturated aliphatic moiety includes at least two conjugated or non-conjugated carbon-carbon double bonds, for example, alkadienyl, alkatrienyl, and so on, or polyenyl. Alternatively, the unsaturated aliphatic moiety includes at least two carbon-carbon triple bonds, for example, or alkadiynyl, alkatriynyl, and so on, or polyynyl. Alternatively, the unsaturated aliphatic moiety includes at least one carbon-carbon double bond and at least one carbon-carbon triple bond.Non-limiting examples of unsaturated aliphatic groups having at least one carbon-carbon double bond as defined herein include decenyl, dodecenyl, undecenyl, tridecenyl, tetradecenyl, pentadecenyl, hexadecenyl, heptadecenyl, octadecenyl, 1,9-decadienyl, docosenyl, hexacosenyl, eicosenyl, tetracosenyl, squalenyl, farnesyl, β-carotenyl, pinenyls, dicyclopentadienyl, camphenyl, α-phellandrenyl, β-phellandrenyl, terpinenyls, β-myrcenyl, limonenyl, 2-carenyl, sabinenyl, α-cedrenyl, copaenyl, β-cedrenyl, and combinations thereof. According to one example, the unsaturated aliphatic group is selected from decenyl, dodecenyl, undecenyl, tridecenyl, tetradecenyl, pentadecenyl, hexadecenyl, heptadecenyl, octadecenyl, 1,9-decadienyl, docosenyl, hexacosenyl, eicosenyl, tetracosenyl, squalenyl, farnesyl, β-carotenyl, and combinations thereof.According to another example, the unsaturated aliphatic group is selected from decenyl, undecenyl, octadecenyl, squalenyl, farnesyl, β-carotenyl groups, and a combination of at least two of these. According to another variant of interest, the unsaturated aliphatic group includes a farnesyl group, the group optionally comprising one or more substituents, preferably a farnesyl group. Non-limiting examples of unsaturated aliphatic groups having at least one carbon-carbon triple bond as defined herein include decenyl, dodecenyl, octadecenyl, hexadecenyl, tridecenyl, tetradecenyl, and docosynyl groups, and a combination of at least two of these. According to a variant of interest, the compound is selected from Compounds 1 to 6 as defined above. The present technology also relates to a composition comprising at least one compound as defined herein, and optionally an additional component.For example, the additional component may be an alkane or a mixture comprising an alkane and a solvent (e.g., dichloromethane, tetrahydrofuran, acetonitrile, N,N-dimethylformamide or a miscible combination thereof, preferably dichloromethane), the alkane preferably comprising from 10 to 50 carbon atoms. An example of an alkane includes decane. In some examples, the composition further comprises a material comprising sulfur atoms, the composition forming a mixture including the material comprising sulfur atoms or being in the form of coated particles comprising a core of the material comprising sulfur atoms and a coating comprising the compound and optionally the additional component. For example, the material comprising sulfur atoms is as defined above. In another example, the composition of said mixture comprises at least about 0.5% by weight, or at least about 2% by weight of the H2S trapping compound as defined herein relative to the weight of the compound comprising sulfur atoms. For example, the composition comprises at least about 5%, or between about 2% and about 30%, or between about 4% and about 20%, or between about 5% and about 15%, by weight of H2S trapping compound as defined herein relative to the weight of the compound comprising sulfur atoms. The compound or composition may be included in an electrochemical cell, for example as an additive in an element of the cell (for example, in the electrolyte or an electrode), as a coating on particles, be inserted into a polymer matrix, or applied as a coating on a surface, for example, on a solid film of one of the elements of the cell (electrode, solid electrolyte, separator, internal surface of the cell (case, bag, etc.) or on an electrochemically inert film introduced into the cell, such as a polymer film, etc.). The present technology also relates to an electrolyte or an electrolyte composition comprising at least one of the present compounds or a composition as defined herein, preferably a composition comprising a material comprising sulfur atoms, the material comprising an inorganic compound in particulate form as defined above. In one example, the electrolyte is a liquid electrolyte comprising a salt in a solvent. Such a liquid electrolyte or a gel electrolyte may impregnate a separator, such as a polymer separator, a cellulose separator, etc.According to another example, the electrolyte is a solid polymer electrolyte comprising a salt in a solvating polymer, the solvating polymer preferably being selected from polymers comprising polyether, polycarbonate, polyester, polyamide, polysulfonamide, fluoropolymer chains, or a combination or copolymer of at least two of these. According to yet another example, the electrolyte is a polymer-ceramic composite solid electrolyte, the polymer preferably being selected from polymers of the polyether, polycarbonate, polyester, fluoropolymer type, or a combination or copolymer of at least two of these. According to some examples, the electrolyte is an inorganic solid electrolyte, preferably of the ceramic type (for example, the ceramic being as defined above). For example, when the electrolyte comprises a ceramic, the compound may be included in a coating on the surface of the particles of the ceramic.Alternatively or in combination, the compound may be dispersed in the electrolyte. The electrolyte may further comprise an alkali metal salt, preferably a lithium salt.Non-limiting examples of salts include a cation of an alkali metal (preferably Li), and an anion selected from hexafluorophosphate (PF6-), bis(trifluoromethanesulfonyl)imide (TFSI-), bis(fluorosulfonyl)imide (FSI-), (flurosulfonyl)(trifluoromethanesulfonyl)imide ((FSI)(TFSI)-), 2-trifluoromethyl-4,5-dicyanoimidazolate (TDI-), 4,5-dicyano-1,2,3-triazolate (DCTA-), bis(pentafluoroethylsulfonyl)imide (BETI-), difluorophosphate (DFP-), tetrafluoroborate (BF4-), bis(oxalato)borate (BOB-), nitrate (NO3-), chloride (Cl-), bromide (Br-), fluoride (F-), perchlorate (ClO4-), hexafluoroarsenate (AsF6-), trifluoromethanesulfonate (SO3CF3-) (Tf-), fluoroalkylphosphate [PF3(CF2CF3)3-] (FAP-), tetrakis(trifluoroacetoxy)borate [B(OCOCF3)4]- (TFAB-), bis(1,2-benzenediolato(2-)-O,O')borate [B(C6O2)2]- (BBB-), difluoro(oxalato)borate (BF2(C2O4) -) (FOB-), an anion of formula BF2O4Rx- (where Rx = C2- 4alkyl), and any combination thereof, e.g., LiTFSI or LiFSI.The electrolyte may also further comprise at least one organic additive (e.g., an ionic organic additive (liquid or solid, crystalline or amorphous), a thiol, a plasticizer, etc.). For example, the ionic organic additive is as described in international patent application WO2022 / 165598 or WO2023 / 133642. The present technology also relates to coated particles for use in an electrochemical cell. In some examples, the coated particles comprise: - a core comprising an electrochemically active material, an electronically conductive material or an ionically conductive inorganic material; and - a coating material comprising a compound as defined herein, or a composition as defined herein without ceramic, the coating material being disposed on the surface of the core.According to other examples, a coated particle comprising the composition as defined herein when it includes a ceramic, and wherein the ceramic is present in the core and the compound is included in the coating. According to one example, the coating material may form a homogeneous coating layer on the surface of the core, i.e., it may form a substantially uniform coating layer on the surface of the core. According to another example, the coating material may form a coating layer on at least a portion of the surface of the core. In other words, it may be heterogeneously dispersed on the surface of the core. It should be understood that the volume or mass ratio of the coating material and the material of said core as well as the conditions of the coating process influence the degree of coverage of the surface of said core by the coating material and / or the homogeneity of the coated particle samples.The use of coated particles as defined herein in electrochemical applications is also contemplated. According to one example, the coated particles may be used in electrochemical cells, electrochemical accumulators, in particular in so-called all-solid-state batteries. For example, the coated particles may be used in an electrode material, in an electrolyte, or at the interface between the two as an additional layer. The present coated particles may also be used in a thin layer on a current collector or on another surface of an electrochemical cell such as an interior surface of a case or sachet, a surface of a substrate (film) included in a cell, etc.It is noted that the above uses may also be directly applicable to the compounds and compositions described herein when integrated into a cell comprising an element that may be a source of H2S, whether the compounds and compositions are in the form of a coating, mixed with a composition or material, or applied directly to a surface. The present technology also relates to a method for manufacturing coated particles as defined herein, the method comprising at least one step of coating at least a portion of the surface of the core with the coating material. The coating step may be carried out by any compatible coating method. For example, the coating step may be carried out by a dry or wet coating process.According to an alternative embodiment of interest, the coating step may be carried out by a wet coating process, for example, by a mechanical coating process, such as a mixing, grinding, mechanosynthesis or mechanofusion process. According to an example, the method further comprises a step of grinding (or pulverizing) the electrochemically active material, the electronically conductive material or the ionically conductive inorganic material of said core of the coated particle. For example, the coating and grinding steps may be carried out simultaneously, sequentially, or may partially overlap in time. When the coating and grinding steps are carried out sequentially, the grinding step may be carried out before the coating step. According to an alternative embodiment of interest, the coating and grinding steps are carried out simultaneously.The grinding and / or coating steps may be performed using a planetary mill or a planetary micromill. In another example, the coating and grinding steps may be performed at a rotational speed and for a determined time period to achieve an optimal particle size or diameter, a desired degree of coverage of the particle core surface by the coating material, and / or a desired homogeneity of the coated particle samples. In some examples, the particles are sulfide-based ceramic particles (e.g., argyrodite Li6PS5Cl particles). The coating and grinding steps are performed at a rotational speed of about 200 to 400 rpm for about 5 to 10 hours, or about 7.5 hours to obtain coated Li6PS5Cl particles, for example, which may have a final particle size of about 1 µm or less.In another example, the method further comprises a step of drying the coated particles. In one example, the drying step may be performed to remove moisture and / or residual solvent. In another example, the drying process may be performed at a low temperature and for a determined time to dry the coated particles without evaporating the H2S trapping compound or without significantly evaporating the H2S trapping compound. For example, the drying step may be performed at a temperature below the boiling temperature of the H2S trapping compound of the coating material and for a determined time to not evaporate it or not significantly evaporate it.It is understood that, when the coating material comprises a mixture, at least one H2S trapping compound does not completely evaporate during the drying step, and therefore, it remains present in the coating layer disposed on the surface of the core of the particle. For example, when the mixture comprises an additional component (for example, an alkane or a mixture comprising an alkane and a solvent as defined above), this may be partially or completely evaporated during the drying step. According to one example, the drying step may be carried out under vacuum, for example, at a temperature of about 40°C to 100°C, or about 80°C.According to another example, the method further comprises a step of coating (also called spreading) a suspension comprising said coated particles, said coating step being carried out, for example, by at least one doctor-blade coating method, a comma coating method, a reverse-comma coating method, a printing method such as gravure coating, or a slot-die coating method. According to an alternative embodiment of interest, said coating step is carried out by a doctor-blade coating method. According to one example, the suspension comprising said coated particles may be coated onto a substrate or support film, said substrate or support film being subsequently removed.According to another example, the suspension comprising said particles can be coated directly onto a current collector. The method can also comprise mixing the particles with additional elements before spreading. Non-limiting examples of additional elements include polymers (such as binders and / or ionic conductive polymers), salts, inorganic or organic additives, for example, an ionic organic additive (liquid or solid), a thiol, a plasticizer, etc. The present technology also relates to an electrode material comprising: - coated particles as defined herein, wherein the core comprises an electrochemically active material; and / or - an electrochemically active material and a compound as defined herein, a composition as defined herein or coated particles as defined herein.In some examples, the electrode material comprises at least one material or compound comprising sulfur atoms, or is for use with an electrolyte comprising a material or compound comprising sulfur atoms. The core of the coated particle may comprise the electrochemically active material. Alternatively, the core of the particle comprises an inorganic compound, preferably comprising sulfur atoms (such as a sulfide or oxysulfide ceramic). In another example, the electrochemically active material is selected from a metal oxide, a metal sulfide, a metal oxysulfide, a metal phosphate, a metal fluorophosphate, a metal oxyfluorophosphate, a metal sulfate, a metal halide (e.g., a metal fluoride), sulfur, selenium, and a combination of at least two thereof.According to another example, the metal of the electrochemically active material is selected from titanium (Ti), iron (Fe), manganese (Mn), vanadium (V), nickel (Ni), cobalt (Co), aluminum (Al), chromium (Cr), copper (Cu), zirconium (Zr), niobium (Nb) and combinations thereof, when compatible. The electrochemically active material may optionally further comprise an alkali or alkaline earth metal, for example, lithium (Li), sodium (Na), potassium (K) or magnesium (Mg). Non-limiting examples of electrochemically active materials include lithium metal phosphates, complex oxides, such as LiM'PO4 (where M' is Fe, Ni, Mn, Co, or a combination thereof), LiV3O8, V2O5, LiMn2O4, LiM''O2 (where M'' is Mn, Co, Ni, or a combination thereof), Li(NiM''')O2 (where M''' is Mn, Co, Al, Fe, Cr, Ti, or Zr, or a combination thereof) and combinations thereof, where compatible.According to one embodiment of interest, the electrochemically active material is an oxide or phosphate such as those described above. For example, the electrochemically active material is a lithium manganese oxide, in which the manganese may be partially substituted by a second transition metal, such as a lithium nickel manganese cobalt (NMC) oxide. According to one alternative, the electrochemically active material is lithium iron phosphate. According to another alternative, the electrochemically active material is a manganese-containing lithium metal phosphate such as those described above, for example, the manganese-containing lithium metal phosphate is a lithium iron manganese phosphate (LiMn1-xFexPO4, where x is between 0.2 and 0.5).In another example, the electrochemically active material is selected from a non-alkali and non-alkaline earth metal (e.g., indium (In), germanium (Ge), and bismuth (Bi)), an intermetallic compound (e.g., SnSb, TiSnSb, Cu2Sb, AlSb, FeSb2, FeSn2, and CoSn2), a metal oxide, a metal nitride, a metal phosphide, a metal phosphate (e.g., LiTi2(PO4)3), a metal halide (e.g., a metal fluoride), a metal sulfide, a metal oxysulfide, a carbon (e.g., graphite, graphene, reduced graphene oxide, hard carbon, soft carbon, exfoliated graphite, and amorphous carbon), silicon (Si), a silicon-carbon composite (Si-C), a silicon oxide (SiO. x ), a silicon oxide-carbon composite (SiO x -C), tin (Sn), a tin-carbon composite (Sn-C), a tin oxide (SnO x ), a tin oxide-carbon composite (SnO x-C), and combinations thereof, when compatible. For example, the metal oxide may be chosen from compounds of formulas M'''' b O c (where M'''' is Ti, Mo, Mn, Ni, Co, Cu, V, Fe, Zn, Nb, or a combination thereof; and b and c are numbers such that the c:b ratio is in the range from 2 to 3) (e.g., MoO3, MoO2, MoS2, V2O5, and TiNb2O7), spinel oxides (e.g., NiCo2O4, ZnCo2O4, MnCo2O4, CuCo2O4, and CoFe2O4) and LiM'''''O (where M''''' is Ti, Mo, Mn, Ni, Co, Cu, V, Fe, Zn, Nb, or a combination of two or more thereof) (e.g., a lithium titanate (such as Li4Ti5O 12) or a lithium molybdenum oxide (such as Li2Mo4O13)). In another example, the electrochemically active material may optionally be doped with other elements included in smaller amounts, for example, to modulate or optimize its electrochemical properties. The electrochemically active material may be doped by partial substitution of the metal with other ions. For example, the electrochemically active material may be doped with a transition metal (e.g., Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, or Y) and / or a non-transition metal (e.g., Mg, Al, or Sb). In another example, the electrochemically active material may be in the form of particles (e.g., microparticles and / or nanoparticles) which may be freshly formed or commercially sourced.The particles may further comprise a layer of coating material on the surface of the electrochemically active material and the present composition may optionally be disposed on the surface of the coating layer. For example, the electrochemically active material may be in the form of particles coated with a layer of coating material. The coating material may be an electronically conductive material, for example, a conductive carbon coating. Alternatively, the coating material may be capable of substantially reducing interfacial reactions at the interface between the electrochemically active material and an electrolyte, for example, a solid electrolyte, and in particular, a sulfide-based ceramic-type solid electrolyte (for example, based on Li6PS5Cl).For example, the coating material may be selected from Li2SiO3, LiTaO3, LiAlO2, Li2O-ZrO2, LiNbO3, combinations thereof, when compatible, and other similar materials. In one embodiment of interest, the coating material comprises LiNbO3. In another example, the electrode material as defined herein further includes a conductive material. In one embodiment of interest, the core of the coated particle comprises the electronically conductive material in the coating material. Non-limiting examples of electronically conductive material include a carbon source such as carbon black (e.g., Ketjen carbon. MC and Super P carbon MC ), acetylene black (e.g., Shawinigan carbon and Denka carbon black MC), graphite, graphene, carbon fibers (e.g., gas-formed carbon fibers (VGCFs)), carbon nanofibers, carbon nanotubes (CNTs), and a combination of two or more thereof. In another example, the electronically conductive material, if present in the electrode material, may be a modified electronically conductive material such as those described in PCT patent application published under number WO2019 / 218067 (Delaporte et al.). For example, the modified electronically conductive material may be grafted with at least one aryl group of Formula II as defined above. Examples of hydrophilic functional groups include hydroxyl, carboxyl, sulfonic acid, phosphonic acid, amine, amide, and other similar groups. For example, the hydrophilic functional group is a carboxyl or sulfonic acid functional group.The functional group may optionally be lithiated by the exchange of a hydrogen with a lithium. Preferred examples of an aryl group of Formula II are p-benzoic acid or p-benzenesulfonic acid. According to one variant of interest, the electronically conductive material is carbon black optionally grafted with at least one aryl group of Formula II. According to another variant of interest, the electronically conductive material may be a mixture comprising at least one modified electronically conductive material. For example, a mixture of carbon black grafted with at least one aryl group of Formula II and carbon fibers (e.g., gas-formed carbon fibers (VGCFs)), carbon nanofibers, carbon nanotubes (CNTs) or a combination of at least two thereof. According to another example, the electrode material as defined herein further includes an additive.In some examples, the core of the coated particle comprises the additive. For example, the additive is selected from inorganic ionic conductive materials, inorganic materials, glasses, glass-ceramics, ceramics, including nanoceramics (e.g., Al2O3, TiO2, SiO2 and other similar compounds), salts (e.g., lithium salts) and a combination of at least two thereof. For example, the additive is preferably an inorganic ionic conductor, for example, selected from compounds of the LISICON, thio-LISICON, argyrodites, garnets, NASICON, perovskites, oxides, sulfides, phosphides, fluorides, sulfur halides, phosphates, thio-phosphates, in crystalline and / or amorphous form, and a combination of at least two thereof.In one embodiment, the additive, if present in the electrode material, may be ceramic, glass, or glass-ceramic particles based on fluoride, phosphide, sulfide, oxysulfide, oxide, or a combination of two or more thereof. Non-limiting examples of ceramic, glass, or glass-ceramic particles include inorganic compounds of formulas MLZO (e.g., M7La3Zr2O12, M(7-a)La3Zr2AlbO12, M(7-a)La3Zr2GabO12, M(7-a)La3Zr(2-b)TabO12, and M(7-a)La3Zr(2-b)NbbO12); MLTaO (for example, M7La3Ta2O12, M5La3Ta2O12, and M6La3Ta1.5Y0.5O12); MLSnO (for example, M7La3Sn2O12); MAGP (for example, M1+aAlaGe2-a(PO4)3); MATP (for example, M1+aAlaTi2-a(PO4)3,); MLTiO (for example, M3aLa(2 / 3-a)TiO3); MZP (for example, MaZrb(PO4)c); MCZP (for example, MaCabZrc(PO4)d); MGPS (for example, MaGebPcSd like M10GeP2S12); MGPSO (for example, MaGebPcSdOe); MSiPS (for example, MaSibPcSd like M10SiP2S12); MSiPSO (for example, MaSibPcSdOe); MSnPS (for example, MaSnbPcSd called M10SnP2S12); MSnPSO (par example, MaSnbPcSdOe); MPS (for example, MaPbSc tel que M7P3S11); MPSO (par example, MaPbScOd); MZPS (for example, MaZnbPcSd); MZPSO (for example, MaZnbPcSdOe); xM2S-yP2S5; xM2S-yP2S5-zMX; xM2S-yP2S5-zP2O5; xM2S-yP2S5-zP2O5-wMX; xM2S-yM2O-zP2S5; xM2S-yM2O-zP2S5-wMX; xM2S-yM2O-zP2S5-wP2O5; xM2S-yM2O-zP2S5-wP2O5-vMX; xM2S-ySiS2; MPSX (for example, MaPbScXd like M7P3S11X, M7P2S8X, and M6PS5X (like Li6PS5Cl)); MPSOX (see example, M. a P b S c OR d X e ); MGPSX (for example, Ma Ge b P c S d X e ); MGPSOX (e.g., M a Ge b P c S d O e X f ); MSiPSX (e.g., M a If b P c S d X e ); MSiPSOX (e.g., M a If b P c S d O e X f ); MSnPSX (e.g., M a Sn b P c S d X e ); MSnPSOX (e.g., M a Sn b P c S d O e X f ); MZPSX (e.g., M a Zn b P c S d X e ); MZPSOX (e.g., M a Zn b P c S d O e X f ); M3OX; M2HOX; M3PO4; M3PS4; and M a PO b N c(where a = 2b + 3c - 5); wherein: M is an alkali metal ion, an alkaline earth metal ion or a combination thereof, and wherein when M comprises an alkaline earth metal ion, then the number of M is adjusted to achieve electroneutrality; X is selected from F, Cl, Br, I or a combination of at least two thereof; a, b, c, d, e and f are non-zero numbers and are, independently in each formula, selected to achieve electroneutrality; and v, w, x, y and z are non-zero numbers and are, independently in each formula, selected to achieve a stable compound. According to other examples, the additive is a ceramic comprising sulfur atoms, for example, of the sulfide or oxysulfide type. Non-limiting examples of such ceramics include inorganic compounds of any of the formulas MGPS (e.g., MaGebPcSd such as M10GeP2S12); MGPSO (e.g., MaGebPcSdOe); MSiPS (e.g.,MaSibPcSd such as M10SiP2S12); MSiPSO (e.g., MaSibPcSdOe); MSnPS (e.g., MaSnbPcSd such as M10SnP2S12); MSnPSO (e.g., MaSnbPcSdOe); MPS (e.g., MaPbSc such as M7P3S11); MPSO (e.g., MaPbScOd); MZPS (e.g., MaZnbPcSd); MZPSO (e.g., MaZnbPcSdOe); xM2S-yP2S5; xM2S-yP2S5-zMX; xM2S-yP2S5-zP2O5; xM2S-yP2S5-zP2O5-wMX; xM2S-yM2O- zP2S5; xM2S-yM2O-zP2S5-wMX; xM2S-yM2O-zP2S5-wP2O5; xM2S-yM2O-zP2S5-wP2O5- vMX; xM2S-ySiS2; MPSX (e.g., MaPbScXd such as M7P3S11X, M7P2S8X, and M6PS5X); MPSOX (e.g., MaPbScOdXe); MGPSX (e.g., MaGebPcSdXe); MGPSOX (e.g., MaGebPcSdOeXf); MSiPSX (e.g., MaSibPcSdXe); MSiPSOX (e.g., MaSibPcSdOeXf); MSnPSX (e.g., MaSnbPcSdXe); MSnPSOX (e.g., MaSnbPcSdOeXf); MZPSX (e.g., MaZnbPcSdXe); MZPSOX (e.g., MaZnbPcSdOeXf); and M3PS4; wherein: M is an alkali metal ion, an alkaline earth metal ion, or a combination thereof,and wherein when M comprises an alkaline earth metal ion, then the number of M is adjusted to achieve electroneutrality, for example M may be selected from Li, Na, K, Rb, Cs, Be, Mg, Ca, Sr, Ba or a combination of at least two thereof, preferably M is Li; X is selected from F, Cl, Br, I or a combination of at least two thereof; a, b, c, d, e and f are non-zero numbers and are, independently in each formula, selected to achieve electroneutrality; and v, w, x, y and z are non-zero numbers and are, independently in each formula, selected to obtain a stable compound. For example, M is selected from Li, Na, K, Rb, Cs, Be, Mg, Ca, Sr, Ba or a combination of at least two thereof. According to a variant of interest, M comprises Li and may further comprise at least one of Na, K, Rb, Cs, Be, Mg, Ca, Sr, Ba or a combination of at least two thereof. According to a variant of interest, M comprises Na, K,Mg or a combination of at least two thereof. For example, the additive may comprise sulfide-based ceramic particles, for example, ceramic particles of the formula LiaPbScXd, where a, b, c and d are such that (a + 5b) = (2c + d), for example compounds of the formula Li6PS5X, wherein X is Cl, Br, I or a combination thereof, the compound may be of the argyrodite type. According to an alternative embodiment of interest, the additive is argyrodite Li6PS5Cl. According to another example, the electrode material as defined herein further includes a binder. For example, the binder is chosen for its compatibility with the various elements of an electrochemical cell. Any known compatible binder is contemplated. For example, the binder may be selected from a polyether, polyester, polycarbonate, fluoropolymer, and rubber-type binder, or a combination or copolymer of at least two of these. In one example,the binder is a fluoropolymer such as polyvinylidene fluoride (PVDF) or polytetrafluoroethylene (PTFE). In another example, the binder is a water-soluble binder such as styrene-butadiene rubber (SBR), acrylonitrile-butadiene rubber (NBR), hydrogenated NBR (HNBR), epichlorohydrin rubber (CHR), or acrylate rubber (ACM), and optionally comprising a thickening agent such as carboxymethylcellulose (CMC), or a polymer such as poly(acrylic acid) (PAA), poly(methyl methacrylate) (PMMA), or a combination of two or more thereof. In another example, the binder is a polyether-type polymer binder. For example, the polyether polymer binder is linear, branched and / or crosslinked and is based on poly(ethylene oxide) (PEO), poly(propylene oxide) (POP) or a combination of both (such as an EO / PO copolymer), and optionally includes crosslinkable units. For example,the crosslinkable segment of the polymer may be a polymer segment comprising at least one functional group crosslinkable multidimensionally by irradiation or by heat treatment. The present technology also relates to an electrode comprising an electrode material as defined herein. In one example, the electrode may be on a current collector (e.g., aluminum or copper foil). Alternatively, the electrode may be self-supporting. The present technology also relates to an electrochemical cell comprising the compound, composition or element as defined herein. For example, the electrochemical cell comprises at least one negative electrode, at least one positive electrode and at least one electrolyte, preferably each being in the form of a solid film, and wherein the electrolyte is as defined herein. Alternatively or in combination,the electrochemical cell may also comprise in at least one of the positive electrode or the negative electrode, an electrode or an electrode material as defined herein. According to one example, the electrolyte is chosen for its compatibility with the different elements of the electrochemical cell. Any type of compatible electrolyte may also be considered if it is not as defined above. According to one example, the electrolyte is a liquid electrolyte comprising a salt in a solvent. According to one alternative, the electrolyte is a gel electrolyte comprising a salt in a solvent and optionally a solvating polymer. According to another alternative, the electrolyte is a solid polymer electrolyte comprising a salt in a solvating polymer. According to another alternative, the electrolyte comprises an inorganic solid electrolyte material, for example, the electrolyte may be a ceramic-type solid electrolyte. According to another alternative,the electrolyte is a polymer-ceramic hybrid solid electrolyte. In another example, the ionically conductive inorganic material is selected from inorganic ionically conductive materials, glasses, glass-ceramics, ceramics, nanoceramics, and a combination of at least two thereof. In another example, the ionically conductive inorganic material comprises a ceramic, glass, or glass-ceramic in crystalline and / or amorphous form. For example, the ceramic, glass, or glass-ceramic particles may be based on fluoride, phosphide, sulfide, oxysulfide, oxide, or a combination thereof. According to another example, the ionically conductive inorganic material is chosen from compounds of the LISICON, thio-LISICON, argyrodites, garnets, NASICON, perovskites, oxides, sulfides, oxysulfides, phosphides, fluorides, of crystalline and / or amorphous form,and a combination of at least two thereof. In another example, the ionically conductive inorganic material is selected from inorganic compounds of formulas MLZO (e.g., M7La3Zr2O, 12 , M (7-a) La3Zr2Al b O 12 , M (7-a) La3Zr2Ga b O 12 , M (7-a) La3Zr (2-b) Your b O 12 , and M (7-a) La3Zr (2-b) Nb b O 12 ); MLTaO (e.g., M7La3Ta2O 12 , M5La3Ta2O 12 , and M6La3Ta 1.5 Y 0.5 O 12 ); MLSnO (e.g., M7La3Sn2O 12 ); MAGP (e.g., M 1+a Al a Ge 2-a (PO4)3); MATP (e.g., M 1+a Al a You 2-a (PO4) 3,); MLTiO (e.g., M3aLa(2 / 3-a)TiO3); MZP (e.g., MaZrb(PO4)c); MCZP (e.g., MaCabZrc(PO4)d); MGPS (e.g., MaGebPcSd such as M10GeP2S12); MGPSO (e.g., MaGebPcSdOe); MSiPS (e.g., MaSibPcSd such as M10SiP2S12); MSiPSO (e.g., MaSibPcSdOe); MSnPS (e.g., MaSnbPcSd such as M10SnP2S12); MSnPSO (e.g., MaSnbPcSd); MPS (e.g., MaPbSc such as M7P3S11); MPSO (e.g., MaPbScOd); MZPS (e.g., MaZnbPcSd); MZPSO (e.g., MaZnbPcSdOe); xM2S-yP2S5; xM2S-yP2S5-zMX; xM2S-yP2S5-zP2O5; xM2S-yP2S5-zP2O5-wMX; xM2S-yM2O-zP2S5; xM2S-yM2O-zP2S5-wMX; xM2S-yM2O-zP2S5-wP2O5; xM2S-yM2O-zP2S5-wP2O5-vMX; xM2S-ySiS2; MPSX (e.g., MaPbScXd such as M7P3S11X, M7P2S8X, and M6PS5X); MPSOX (e.g., MaPbScOdXe); MGPSX (e.g., MaGebPcSdXe); MGPSOX (e.g., MaGebPcSdOeXf); MSiPSX (e.g., MaSibPcSdXe); MSiPSOX (e.g., MaSibPcSdOeXf); MSnPSX (e.g., MaSnbPcSdXe); MSnPSOX (e.g., MaSnbPcSdOeXf);MZPSX (e.g., MaZnbPcSdXe); MZPSOX (e.g., MaZnbPcSdOeXf); M3OX; M2HOX; M3PO4; M3PS4; and MaPObNc (where a = 2b + 3c - 5); wherein: M is an alkali metal ion, an alkaline earth metal ion, or a combination thereof, and wherein when M comprises an alkaline earth metal ion, then the number of M is adjusted to achieve electroneutrality; X is selected from F, Cl, Br, I, or a combination of at least two thereof; a, b, c, d, e, and f are nonzero numbers and are, independently in each formula, selected to achieve electroneutrality; and v, w, x, y, and z are nonzero numbers and are, independently in each formula, selected to achieve a stable compound. According to a variant of interest, the ionically conductive inorganic material is chosen from inorganic compounds of formula Li; a P b S c X d, where a, b, c and d are such that (a + 5b) = (2c + d), for example compounds of formula Li6PS5X, wherein X is Cl, Br, I or a combination thereof, wherein the compound may be of the argyrodite type. For example, the ionically conductive inorganic material is Li6PS5Cl. In another example, the salt, if present in the electrolyte, may be an ionic salt, such as a lithium salt as defined herein. In another example, the solvent, if present in the electrolyte, may be a non-aqueous solvent. Non-limiting examples of solvents include cyclic carbonates such as ethylene carbonate (EC), propylene carbonate (PC), butylene carbonate (BC) and vinylene carbonate (VC); acyclic carbonates such as dimethyl carbonate (DMC), diethyl carbonate (DEC),methyl ethyl carbonate (EMC) and dipropyl carbonate (DPC); lactones such as γ-butyrolactone (γ-BL) and γ-valerolactone (γ-VL); acyclic ethers such as 1,2-dimethoxyethane (DME), 1,2-diethoxyethane (DEE), ethoxy methoxy ethane (EME), trimethoxymethane and ethylmonoglyme; cyclic ethers such as tetrahydrofuran, 2-methyltetrahydrofuran, 1,3-dioxolane and dioxolane derivatives; and other solvents such as dimethyl sulfoxide, formamide, acetamide, dimethylformamide, acetonitrile, propylnitrile, nitromethane, phosphoric acid triesters, sulfolane, methylsulfolane, propylene carbonate derivatives, and mixtures thereof. In another example, the electrolyte is a gel electrolyte or a gel polymer electrolyte. The gel polymer electrolyte may comprise, for example, a polymer precursor and a salt (e.g., a salt as defined above), a solvent (e.g.,a solvent as defined above) and a polymerization and / or crosslinking initiator, if necessary. Examples of gel electrolyte include, but are not limited to, gel electrolytes such as those described in PCT patent applications published under numbers WO2009 / 111860 (Zaghib et al.) and WO2004 / 068610 (Zaghib et al.). In another example, a gel electrolyte or a liquid electrolyte as defined above may also impregnate a separator such as a polymer separator. Examples of separators include, but are not limited to, polyethylene (PE), polypropylene (PP), cellulose, polytetrafluoroethylene (PTFE), polyvinylidene fluoride (PVDF) and polypropylene-polyethylene-polypropylene (PP / PE / PP) separators. For example, the separator is a commercial polymer separator such as Celgard, MC. In another example, the electrolyte is a solid polymer electrolyte. For example, the solid polymer electrolyte may be selected from any known solid polymer electrolyte and may be chosen for its compatibility with the various elements of an electrochemical cell. Solid polymer electrolytes generally comprise a salt as well as one or more solid polar polymer(s), optionally crosslinked. Polyether-type polymers, such as those based on polyethylene oxide (PEO), may be used, but several other compatible polymers are also known for the preparation of solid polymer electrolytes and are also contemplated. The polymer may be crosslinked. Examples of such polymers include branched polymers, e.g., star polymers or comb polymers such as those described in PCT patent application published under number WO2003 / 063287 (Zaghib et al.).According to another example, the solid polymer electrolyte may include a block copolymer composed of at least one lithium ion solvation segment and optionally at least one crosslinkable segment. Preferably, the lithium ion solvation segment is selected from homo- or copolymers having repeating units of Formula III: Formula III in which, R is selected from a hydrogen atom, and a C1-C group. 10 alkyl or a group –(CH2-OR a R b ); R a is (CH2-CH2-O) y ; R b is chosen from a hydrogen atom and a C1-C group 10alkyl; x is an integer selected from the range of 10 to 200000; and y is an integer selected from the range of 0 to 10. In another example, the crosslinkable segment of the copolymer is a polymer segment comprising at least one functional group crosslinkable multidimensionally by irradiation or by heat treatment. When the electrolyte is a liquid electrolyte, a gel electrolyte or a solid polymer electrolyte, the compound, composition, or coated particles as defined herein may be present as an additive in the electrolyte. It is understood that the coated particles will not comprise an electrode active material in such an alternative.When the electrolyte is a polymer-ceramic hybrid or composite solid electrolyte (polymer-ceramic or polymer-ceramic) or a ceramic-type solid electrolyte, the coated particles as defined herein may be present as an inorganic (ceramic) solid electrolyte material. In another example, the electrolyte may also optionally include additional components such as ionically conductive materials, inorganic particles, glass or ceramic particles, organic additives, as defined above, and other additives of the same type. The additional component may be chosen for its compatibility with the various elements of an electrochemical cell. In one example, the additional component may be substantially dispersed in the electrolyte. Alternatively, the additional component may be present in a separate layer.The present technology also relates to a coating material for a current collector comprising coated particles as defined herein, wherein the core of the coated particle comprises an electronically conductive material. For example, the coated particles may be coated conductive carbon particles which may be coated on a metallic current collector foil (e.g., aluminum or copper foil). A current collector comprising the coating material coated on a metallic foil is also contemplated. According to an alternative of interest, the electrochemically material of the negative electrode may be chosen for its electrochemical compatibility with the various elements of the electrochemical cell as defined herein.For example, the electrochemically active material of the negative electrode material may have a substantially lower oxidation-reduction potential than that of the electrochemically active material of the positive electrode. According to another variant of interest, the negative electrode of the electrochemical cell includes an electrochemically active material selected from all known compatible electrochemically active materials. For example, the electrochemically active material of the negative electrode may be chosen for its electrochemical compatibility with the various elements of the electrochemical cell as defined herein.Non-limiting examples of electrochemically active materials of the negative electrode include alkali metals, alkaline earth metals, alloys comprising at least one alkali or alkaline earth metal, non-alkali and non-alkaline earth metals (e.g., indium (In), germanium (Ge) and bismuth (Bi)), and alloys or intermetallic compounds (e.g., SnSb, TiSnSb, Cu2Sb, AlSb, FeSb2, FeSn2 and CoSn2). According to an alternative embodiment of interest, the electrochemically active material of the negative electrode may comprise a film of metallic lithium or an alloy including or based on metallic lithium. For example, the electrochemically active material of the negative electrode may be in the form of a film having a thickness in the range of about 5 µm to about 500 µm and preferably in the range of about 10 µm to about 100 µm, upper and lower limits inclusive.According to another example, the positive electrode may be prelithiated and the negative electrode may be initially (i.e., before cycling of the electrochemical cell) substantially or completely free of lithium. The negative electrode may be lithiated in situ during cycling of said electrochemical cell, in particular during the first charge. According to one example, metallic lithium may be deposited in situ on the current collector (e.g., a copper current collector) during cycling of the electrochemical cell, in particular during the first charge. According to another example, an alloy including metallic lithium may be generated on the surface of a current collector (e.g., an aluminum current collector) during cycling of the electrochemical cell, in particular during the first charge. It is understood that the negative electrode may be generated in situ during cycling of the electrochemical cell, in particular during the first charge.According to another variant of interest, the positive electrode and the negative electrode are both as defined herein or both comprise an electrode material as defined herein. The present technology also relates to a battery comprising at least one electrochemical cell as defined herein. For example, the battery can be a primary (cell) or secondary (accumulator) battery. According to one example, the battery is selected from the group consisting of a lithium battery, a lithium-ion battery, a sodium battery, a sodium-ion battery, a magnesium battery, a magnesium-ion battery, a potassium battery and a potassium-ion battery. According to one variant of interest, the battery is a so-called all-solid-state battery.In another example, the present compound or composition comprising it may allow a substantial reduction in the amount of H2S released into the material in which the compound is present, or allow the capture of H2S as it is released into the material, thereby reducing its concentration therein. Other advantages may also be present in a material, composition, or cell comprising the compound. For example, the compound could allow a substantial reduction in the number and size of agglomerates of particles of electronically conductive material or of the ceramic-type electrolyte material. Without wishing to be bound by theory, for example, repulsive interactions related to the coating material may allow for a better dispersion of the constituents of the positive electrode in the dispersion, whether or not the other constituents allowing this type of interaction are modified.For example, the repulsive interactions may be ^- ^ and / or polar interactions. According to another example, the compound may also substantially limit parasitic reactions with H2S and other constituents of the electrochemical cell, and thus improve the cycling and aging stability of the electrochemical cell. According to another example, the compound may also substantially limit the charge transfer resistance and may allow for substantially improving the ionic and / or electronic conductivity due to the double or triple bonds present in the compound. Without wishing to be bound by theory, the π orbitals of the compound as defined herein may allow orbital delocalization and therefore orbital interactions with ions and / or electrons.In another example, the compound may also substantially improve the safety of the electrochemical cell, for example, by reducing gas generation. For example, when coated on or mixed with a sulfide-based ceramic electrolyte material particle, the compound may substantially reduce the amount of hydrogen sulfide (H2S) generated by exposure of the coated material to moisture or ambient air and capture it if released. In another aspect, the present document also relates to the use of the present compounds for H2S trapping. For example, this use may comprise a method of H2S trapping comprising a step of contacting a compound as defined herein with a source of H2S. For example, the contacting may comprise dissolving the compound.Examples of H2S sources may include a ceramic comprising sulfur atoms, for example, of the sulfide or oxysulfide type as defined herein. Alternatively, the H2S source comprises H2S, elemental sulfur, a salt comprising unoxidized sulfur atoms, a polymer comprising sulfur atoms, an organic compound comprising sulfur atoms, or a combination of two or more thereof. EXAMPLES The following examples are illustrative and should not be construed as further limiting the scope of the invention as contemplated. These examples will be better understood by referring to the accompanying Figures. Example 1 – Synthesis of an Organic Molecule Comprising a Triazine-Type H2S Trapping Functionality a) Compound 1 This example illustrates the synthesis of an H2S trapping molecule (Compound 1) comprising a triazine-type function and three unsaturated hydrocarbon chains. The process may be illustrated by Scheme 1:.

[0002] The first step in the synthesis of the compound is based on the work of . abe et al., Angew. Chem. Int. Ed., 2017, 56, 2776-2779. In a Schenk-type setup, farnesol is dissolved in anhydrous tetrahydrofuran. The solution is stirred at 0°C. 0.33 equivalents of phosphorus tribromide (PBr3) are added dropwise to the solution. The solution is stirred at 0°C for 2 hours. Ice-cold water is added to the reaction mixture and the aqueous phase is extracted three times with diethyl ether. The organic phases are washed with saturated NaHCO3 solution, H2O and saturated NaCl solution and then dried over MgSO4. After filtration, the solvent is evaporated to obtain a yellow oil which is used as is in the next step. Second step The second step of synthesis of Compound 1 is inspired by the work of GM Coppola et al., Synth. Commun., 1993, 23, 535-541.To a solution of lithium bis(trimethylsilyl)amide (1.1 eq. at 1.5M) in anhydrous THF is added 1 equivalent of bromofarnesyl prepared in (a) dropwise under an inert atmosphere and at 0°C. The reaction mixture is stirred at room temperature for 18 hours. Water is added to the reaction mixture and the aqueous phase is extracted three times with diethyl ether. The organic phases are washed with water and with a saturated NaCl solution and then dried over MgSO4. After filtration, the solvent is evaporated and the orange oil obtained is placed in a dichloromethane / methanol mixture (4 / 6) and stirred for 18 hours at room temperature. After evaporation of the solvent, the product is purified by reversed-phase flash chromatography (C18, eluent methanol / dichloromethane 5%) to obtain farnesylamine in the form of a yellow oil. Third step The farnesylamine obtained in (b) is placed in solution in anhydrous toluene.One equivalent of paraformaldehyde is added to the solution under an inert atmosphere. The reaction mixture is heated to reflux and the water is removed from the reaction using a Dean-Starck type assembly. After 2 hours of reaction, the solvent is evaporated. The orange oil obtained is purified by reversed-phase flash chromatography (C18, eluent methanol / dichloromethane (20%)). b) Compound 3 In 50 ml of toluene. of paraformaldehyde (1 g) and 4-(methylthio)aniline (4.4 g) is refluxed for three hours. Then, the solvent is removed under vacuum. The resulting solid is purified by precipitation with a mixture of dichloromethane (15 ml) and diethyl ether (200 ml) to obtain Compound 3 (1,3,5-tris(4-(methylthio)phenyl)-1,3,5-triazinane) as a white powder (3 g). NMR 1 H (300 MHz, CDCl3) δ 7.17 (d, J = 8.7 Hz, 6H), 6.91 (d, J = 8.7 Hz, 6H), 4.81 (s, 6H), 2.41 (s, 9H). NMR 13C (75 MHz, CDCl3) δ 146.83, 129.69, 129.52, 118.53, 68.84, 17.81. c) Compound 4 In 50 ml of anhydrous toluene, paraformaldehyde (1.82 g) and 2-methoxyethylamine (4.32 g) are refluxed for three hours. Then, the solvent is removed under vacuum and the product is purified by reverse-phase flash chromatography (C18, eluent methanol / dichloromethane 20%) to obtain Compound 4 (1,3,5-tris(2-methoxyethyl)-1,3,5-triazinane) as a clear oil (4.02 g). NMR 1 H (300 MHz, CDCl3) δ 3.45 (t, J = 5.7 Hz, 12H), 3.31 (s, 9H), 2.66 (t, J = 5.7 Hz, 6H). NMR 13 C (75 MHz, CDCl3) δ 74.95, 71.38, 58.88, 52.26. d) Compound 6 In 50 ml of toluene Paraformaldehyde (1.14 g) and 1-aminohexane (3.83 g) are refluxed for three hours. Then, the solvent is removed under vacuum and the product is purified by reverse-phase flash chromatography (C18, eluent methanol / dichloromethane 20%) to obtain Compound 6 (1,3,5-trihexyl-1,3,5-triazinane) as a clear oil (3.47 g). NMR 1 H (300 MHz, CDCl3) δ 3.31 (br, 6H), 2.40 (t, 6H), 1.50 – 1.37 (m, 6H), 1.37 – 1.21 (m, 18H), 0.86 (t, 9H). NMR 13 C (75 MHz, CDCl3) δ 74.72, 52.98, 31.88, 27.67, 27.30, 22.74, 14.16. e) Compound 8 In 50 ml of anhydrous toluene, an equimolar mixture of paraformaldehyde (0.76 g) and 3,5-bis(trifluoromethyl)aniline (5.88 g) is refluxed for three hours. Then, the solvent is removed under vacuum. The resulting solid is purified by precipitation with a mixture of dichloromethane (15 ml) and hexane (200 ml) to obtain Compound 8 (1,3,5-tris(3,5-bis(trifluoromethyl)phenyl)-1,3,5-triazinane) as a white powder (4.43 g). NMR 1 H (300 MHz, CDCl3) δ 7.41 (s, 3H), 7.36 (s, 6H), 5.12 (s, 6H). NMR 13 C (75 MHz, CDCl3) δ 149.17, 133.25 (q, J CF = 33.3 Hz), 123.11 (q, J CF = 273.7 Hz), 117.63, 115.50, 68.62. NMR 19 F (282 MHz, CDCl3) δ -63.5. Example 2 – Coating of Li6PS5Cl ceramic particles by wet grinding a) Coating of sulfide electrolyte particles The coating of the Li6PS5Cl particles was carried out using a PULVERISETTE planetary micromill MC7. To begin, 4 g of Li6PS5Cl particles were placed in an 80 mL zirconium oxide (or zirconia) grinding jar. A mixture comprising 20 mL of anhydrous decane and 7 mL of farnesene or Compound 1 prepared in Example 1 (75:25 by volume) along with grinding balls with a diameter of 2 mm were added to the jar. The Li6PS5Cl particles and the mixture of decane and farnesene or Compound 1 were combined by grinding at a speed of about 300 rpm for about 7.5 hours to produce coated Li6PS5Cl particles. The resulting particles were subsequently dried under vacuum at a temperature of about 80°C. b) Thermogravimetric Analysis (TGA) Li6PS5Cl particles, uncoated, coated with farnesene or the H2S trapping organic molecule Compound 1 as described in Example 2(a) were characterized by TGA.Thermogravimetric curves for uncoated Li6PS5Cl solid sulfide electrolyte (curve 1), for Li6PS5Cl particles coated with a mixture of decane and farnesene (curve 2), and for Li6PS5Cl particles coated with a mixture of decane and Compound 1 (curve 3), as described in Example 2(a) are shown in Figure 1. Thermogravimetric analyses were performed at a temperature rise rate of 10 °C / min. Figure 1 shows that the mass loss occurs around 200 °C, the temperature at which the onset of thermal degradation can be observed. Figure 1 also shows a larger mass variation for the sample comprising Li6PS5Cl particles coated with Compound 1, an organic H2S trapping molecule given the presence of 3 farnesyls within this molecule.Nevertheless, the mass loss is much higher than 3 times compared to the mass loss for the farnesene-coated sample (curve 2), thus confirming a better coating of the sulfide electrolyte thanks to Compound 1. Example 3 – Preparation and characterization of H2S-trapping ceramic-organic molecule composite solid electrolyte films a) Preparation of H2S-trapping ceramic-organic molecule composite solid electrolyte films All manipulations were carried out in a glove box under an argon atmosphere (max: 0.1 ppm H2O; 0.1 ppm O2). Two sizes (average size about 3 μm and less than 1 μm) of uncoated inorganic solid electrolyte particles of the sulfide-based ceramic type (Li6PS5Cl) were mixed in a mass proportion of 90:10 using a vortex.The binder is formed from a 40 / 60 mass blend of (a) Polymer 1 at 4.0 wt% 4,4'-thiobisbenzenethiol (TBT) and (b) 1,1'-hexamethylene bis(1-methylpyrrolidinium) bis(trifluoromethanesulfonyl)imide dissolved in dichloromethane. Polymer 1 is a four-armed star-shaped multi-branch polyether polymer comprising crosslinkable units at the ends of the branches as described in U.S. Patent No. 7,897,674. For the electrolyte films containing the organic H2S trapping molecule (Compound 1), this molecule was added directly to the binder mixture in a proportion of 5% (Film 2), 10% (Film 3) and 15% (Film 4) in mass % vs. sulfide ceramic. Film 1 does not contain an organic H2S trapping molecule for reference. The weight ratio of sulfide to binder was 90 / 10 by mass. The amount of dichloromethane was adjusted to obtain a mixture with an appropriate viscosity.The resulting mixture was coated onto a previously degreased aluminum foil. The film was dried in a glove box. Other films were also prepared using the procedure below and using other compounds as organic H2S trapping molecules. The composition of the different films is summarized in Table 1. Table 1. Composition of the F films. ilm Composé ( % a Binder Ceramic Mass ratio: ceramic: binder BT) and 1,1'-hexamethylene bis(1-methylpyrrolidinium) bis(trifluoromethanesulfonyl)imide; c. Li6PS5Cl: 90 / 10 particles with an average diameter of ^3 μm / <1 μm. b) Ionic conductivity of polymer-ceramic hybrid solid electrolyte films Pellets of 10 mm diameter were taken from the ceramic composite solid electrolyte films prepared in Example 3(a). The pellets were then placed in a 10 mm diameter mold and compressed under a pressure of 2.8 tons using a press. The pellets were then placed in a conductivity cell at a pressure of 5 MPa closed under an inert argon atmosphere.The configuration of each cell is shown as follows: Cell 1 (Reference): Electrode / Film 1 / Electrode Cell 2: Electrode / Film 2 / Electrode Cell 3: Electrode / Film 3 / Electrode Cell 4: Electrode / Film 4 / Electrode Cell 5: Electrode / Film 5 / Electrode Cell 6: Electrode / Film 6 / Electrode Cell 7: Electrode / Film 7 / Electrode Cell 8: Electrode / Film 8 / Electrode Cell 9: Electrode / Film 9 / Electrode Cell 10: Electrode / Film 10 / Electrode Cell 11: Electrode / Film 11 / Electrode Cell 12: Electrode / Film 12 / Electrode Cell 13: Electrode / Film 13 / Electrode Ionic conductivity measurements of the cells assembled in this example were carried out with a VMP-300 multichannel potentiostat (Bio-Logic. MC). The measurements were carried out over a frequency range from 7 MHz to 200 mHz under an amplitude of 50 mV in a temperature range from -10°C to 70°C in ramp-up (every 10°C) and from 70°C to 20°C in ramp-down (every 10°C). The impedance measurements were obtained after a stabilization of approximately one hour. Two impedance measurements were recorded at each temperature with 15 minutes between each measurement. Figure 2(a) presents the results of ionic conductivity measured as a function of temperature for Cells 1 (■), 2 (▲), 3 (●), 4 (♦). The results of ionic conductivity measured as a function of temperature are presented in Figure 2(b) to 2(j) for Cells 5 to 13, respectively.The interaction between the ionic plastic salt and sulfide-based ceramics (such as Li6PS5Cl) as well as the positive effect of the creep of the ionic plastic salt on the density of the resulting film and on its ionic conductivity results in an increase in the ionic conductivity after creep at 70°C. The ionic conductivity of the ceramic-organic H2S trapping molecule composite solid electrolyte films is substantially identical to that obtained for an inorganic solid electrolyte film of sulfide-based ceramic type (Li6PS5Cl) without this molecule. A slight improvement in the ionic conductivity can be noted in the presence of the organic molecule, confirming the privileged interaction between this molecule and the sulfide, as for the result obtained in Example 2. Thus, the incorporation of the organic H2S trapping molecule does not disturb the electrochemical performances and it is possible to incorporate it in several ways.For example, it is possible to coat the particles with this substance (Example 2), or add it directly into a predefined mixture (Example 3). Example 4 – Generation of H2S upon exposure of inorganic compounds with an argyrodite-type structure to air Safety tests were carried out to evaluate the impact of the addition of organic H2S-trapping molecule on H2S generation. 10 mm diameter pellets of the films prepared as in Example 3(a), without compression, after compression and after compression and heat treatment at 70°C under argon were placed in a sealed cell under an inert atmosphere. An air flow was then introduced into the sealed cell at a flow rate of approximately 0.3 L / min, at a controlled temperature of approximately 24.5 °C (± 0.5 °C) and at a controlled hygrometry with a humidity level of 50% (± 5%).The concentration of generated H2S gas was measured approximately every 15 seconds with a multigas detector (MSA ALTAIR. MC5X) previously calibrated and placed at the outlet of the cell. From these data, the volume of H2S gas generated normalized by the mass of argyrodite was calculated. The results of these analyses are presented in Figure 3(a), which shows a plot of the volume of H2S gas generated per gram of sulfide powder (mL / g) versus time in hours for Films 1, 2 (5% by mass of Compound 1 vs. sulfide), 3 (10% by mass of Compound 1 vs. sulfide), and 4 (15% by mass of Compound 1 vs. sulfide) without compression (dashed-dashed line), after compression at 2.8T (dashed-dot-dashed line), and after compression at 2.8T and heat treatment at 70°C (solid line). Figures 3(b) and 3(c) present the results obtained for Movies 5 to 9 and 10 to 13, respectively, in comparison with Movie 1.It is possible to observe that an electrolyte film without compression generates more H2S than a compressed film, and even more than a film compressed and densified by heat treatment since the porosity of the films decreases with these different treatments. The densification of the film by compression and heat treatment is maximum and its porosity minimal. Before compression, the addition of H2S trapping organic molecule increases the generation of H2S because this organic molecule is in the liquid state and therefore induces more porosity within the electrolyte film and therefore more developed surface area that can generate H2S. This confirms the incorporation of the organic molecule. After compression at 2.8T, the porosity of the electrolyte films is reduced and it is then possible to study the effect of the addition of the H2S trapping organic molecule.The generation of H2S is significantly reduced with the addition of the organic H2S trapping molecule, increasing after one hour from 42 mL / g of sulfide without molecule to 33, 30 and 28 mL / g of H2S for 5%, 10% and 15% by mass of organic H2S trapping molecule, respectively. Thus, the addition of the H2S trapping molecule directly within the sulfide-based electrolyte film significantly reduces the generation of H2S and improves the safety of the said system. After compression at 2.8T and treatment at 70°C, and therefore a more marked reduction in the porosity of the electrolyte film, the generation of H2S is again reduced by the addition of the organic H2S trapping molecule. Thus, the organic H2S trapping molecule is preserved following the heat treatment and provides protection from H2S emissions. Depending on the molecules, these decreases are more or less marked. The results confirm that each molecule traps H2S well.The optimal amount of trapping molecule depends on the sulfide ceramic and therefore its proportion to generate H2S, the residual porosity of the shaping and the trapping proportion of each trapping molecule. Concentration adjustments could be made based on these elements for each compound. Several modifications could be made to any of the embodiments described above without departing from the scope of the present invention as envisaged. The references, patents or scientific literature documents referred to in the present application are incorporated herein by reference in their entirety and for all purposes.

Claims

CLAIMS 1. An element of an electrochemical cell, the element being selected from an electrode material and an electrolyte composition, the element comprising a compound of Formula I: in which: R 1 is, independently at each occurrence, chosen from a saturated or unsaturated, linear or branched aliphatic group and a cycloalkyl, heterocycloalkyl, aromatic or heteroaromatic group, the aliphatic, aromatic or heteroaromatic group being optionally substituted; and R 2 and R 3 are, independently at each occurrence, chosen from a hydrogen atom or a saturated or unsaturated, linear or branched aliphatic group, or R 2 and R 3 together form, with the adjacent carbon atom, a carbonyl group.

2. The element of claim 1, wherein R 1is at least one occurrence a saturated or unsaturated, linear or branched, optionally substituted aliphatic group.

3. Element of claim 2, in which R 1 is at each occurrence a saturated or unsaturated, linear or branched aliphatic group optionally substituted.

4. Element of claim 1, in which R 1 is at least one occurrence an optionally substituted aromatic or heteroaromatic group.

5. The element of claim 1, wherein R 1 is at each occurrence an aromatic or heteroaromatic group possibly substituted.

6. The element of any one of claims 1 to 3, wherein the aliphatic group is unsaturated and comprises at least one carbon-carbon double bond or triple bond (alkenyl or alkynyl).

7. The element of any one of claims 1 to 3, wherein the aliphatic group is saturated (alkyl).

8. The element of any one of claims 1 to 3, 6 and 7, wherein the aliphatic group has at least 6 carbon atoms, or at least 10 carbon atoms, or between 10 and 50 carbon atoms.

9. The element of any one of claims 1 to 3, 6 and 7, wherein the aliphatic group has between 1 and 10 carbon atoms, or between 1 and 6 carbon atoms, the aliphatic group preferably being substituted. 10.The element of claim 6, wherein the aliphatic group is selected from decenyl, dodecenyl, undecenyl, tridecenyl, tetradecenyl, pentadecenyl, hexadecenyl, heptadecenyl, octadecenyl, 1,9-decadienyl, docosenyl, hexacosenyl, eicosenyl, tetracosenyl, squalenyl, farnesyl, β-carotenyl, pinenyls, dicyclopentadienyl, camphenyl, α-phellandrenyl, β-phellandrenyl, terpinenyls, β-myrcenyl, limonenyl, 2-carenyl, sabinenyl, α-cedrenyl, copaenyl, β-cedrenyl, decynyl, dodecynyl, octadecynyl, hexadecynyl, tridecynyl, tetradecynyl, and docosynyl, or a combination of at least two of these, the group being optionally substituted by one or more substituents. 11.The element of claim 10, wherein the aliphatic group is selected from decenyl, dodecenyl, undecenyl, tridecenyl, tetradecenyl, pentadecenyl, hexadecenyl, heptadecenyl, octadecenyl, 1,9-decadienyl, docosenyl, hexacosenyl, eicosenyl, tetracosenyl, squalenyl, farnesyl, and β-carotenyl, or a combination of at least two thereof, the group being optionally substituted with one or more substituents.

12. The element of claim 10, wherein the aliphatic group is selected from decenyl, undecenyl, octadecenyl, squalenyl, farnesyl, and β-carotenyl, preferably farnesyl, or a combination of at least two of. these, the group being optionally substituted by one or more substituent(s).

13. Element of claim 7, in which the aliphatic group is a linear or branched group C 1-20 alkyl, preferably C 1-10 alkyl or C 2-10alkyl, the group being optionally substituted by one or more substituents.

14. The element of any one of claims 1, 4 and 5, in which the aromatic or heteroaromatic group is a C group 6-10 aryl or C 5- 12 heteroaryl, the group being optionally substituted with one or more substituents.

15. The element of any one of claims 1 to 14, wherein the group is unsubstituted.

16. The element of any one of claims 1 to 14, wherein the group is substituted with one or more substituents.

17. The element of claim 16, wherein the substituent(s) is (are) independently selected from halogen (such as F, Cl, Br, I), -OH, oxo, alkyl, -OR 4 , -alkylOR 4 , -SH, -SR 4 , -alkylSR 4 , -SeH, -SeR 4 , -alkylSeR 4 , -CN, -N3, -C(O)OH, -C(O)OR 4 , -C(O)R 4 , -NH2, -NHR 2 , -N(R 2)2, -NHC(O)R 2 , -C(O)NHR 2 , -C(O)NH2, - C(NR 4 )R 4 , -NO2, -O-Si(R 4 )3, -Si(R 4 )3, -O-Si(OR 4 )3, -Si(OR 4 )3, -OB(R 4 )3, -B(R 4 )2, -O- B(OR 4 )2, -B(OR 4 )2, -B(OH)2, -C(S)OH, -C(S)OR 4 , -SO2OR 4 , -OSO2R 4 , -SO2R 4 , - SO2NHR 4 , -SO2NH2, -NHSO2R 4 , -P(O)(OR 4 )2, optionally substituted alkenyl, alkynyl, aryl, heteroaryl, cycloalkyl or heterocycloalkyl, or a combination thereof, where R 4 is an optionally substituted alkyl, alkenyl or alkynyl group.

18. The element of claim 1, wherein the compound of Formula I is selected from: 5 Compound 9 Compound 10 19. The element of any one of claims 1 to 18, further comprising an alkane or a mixture comprising an alkane and a solvent, for example the alkane comprising from 10 to 50 carbon atoms, preferably decane.

20. The element of any one of claims 1 to 19, further comprising at least one material comprising sulfur atoms, the material comprising sulfur atoms forming a mixture with the compound, or the compound forming a coating on particles comprising a core of the material comprising sulfur atoms.

21. The element of claim 20, wherein the material comprising sulfur atoms is a ceramic comprising sulfur atoms, for example, of the sulfide or oxysulfide type.

22. The element of claim 21, wherein the ceramic is selected from inorganic compounds of formulae: - MGPS (for example, M a Ge b P c S d such as M 10 GeP2S 12); - MGPSO (e.g., M a Ge b P c S d O e ); - MSiPS (e.g., M a If b P c S d such as M 10 SiP2S 12 ); - MSiPSO (e.g., M a If b P c S d O e ); - MSnPS (e.g., M a Sn b P c S d such as M 10 SnP2S 12 ); - MSnPSO (e.g., M a Sn b P c S d O e ); - MPS (e.g., M a P b S c such as M7P3S 11 ); - MPSO (e.g., M a P b S c O d ); - MZPS (e.g., M a Zn b P c S d ); - MZPSO (e.g., M a Zn b P c S d O e ); - xM2S-yP2S5; - xM2S-yP2S5-zMX; - xM2S-yP2S5-zP2O5; - xM2S-yP2S5-zP2O5-wMX; - xM2S-yM2O-zP2S5; - xM2S-yM2O-zP2S5-wMX; - xM2S-yM2O-zP2S5-wP2O5; - xM2S-yM2O-zP2S5-wP2O5-vMX; - xM2S-ySiS2; - MPSX (e.g., MaPbScXd such as M7P3S11X, M7P2S8X, and M6PS5X); - MPSOX (e.g., MaPbScOdXe); - MGPSX (e.g., MaGebPcSdXe); - MGPSOX (e.g., MaGebPcSdOeXf); - MSiPSX (e.g., MaSibPcSdXe); - MSiPSOX (e.g., MaSibPcSdOeXf); - MSnPSX (e.g., MaSnbPcSdXe); - MSnPSOX (e.g., MaSnbPcSdOeXf); - MZPSX (e.g., MaZnbPcSdXe); - MZPSOX (e.g., MaZnbPcSdOeXf); and - M3PS4; wherein, M is an alkali metal ion, an alkaline earth metal ion, or a combination thereof, and wherein when M comprises an alkaline earth metal ion, then the number of M is adjusted to achieve electroneutrality; X is selected from F, Cl, Br, I, or a combination of at least two thereof;a, b, c, d, e and f are non-zero numbers and are, independently in each formula, selected to achieve electroneutrality; and v, w, x, y and z are non-zero numbers and are, independently in each formula, selected to obtain a stable compound.

23. The element of claim 22, wherein M is selected from Li, Na, K, Rb, Cs, Be, Mg, Ca, Sr, Ba or a combination of at least two thereof, preferably M is Li.; 24. The element of any one of claims 21 to 23, wherein the ceramic is selected from inorganic compounds of formula Li a P b S c X d, where a, b, c and d are such that (a + 5b) = (2c + d), for example compounds of formula Li6PS5X, wherein X is Cl, Br, I or a combination thereof, the compound may be of the argyrodite type, or the ceramic is Li6PS5Cl.

25. The element of any one of claims 20 to 24, wherein the material comprising sulfur atoms comprises elemental sulfur, a salt comprising unoxidized sulfur atoms, a polymer comprising sulfur atoms, and / or an organic compound comprising sulfur atoms.

26. The element of any one of claims 1 to 25, wherein the element is an electrolyte composition.

27. The element of claim 26, further comprising a solvent.

28. Element of claim 26 or 27, further comprising a solvating polymer, the solvating polymer preferably being chosen from polymers comprising polyether, polycarbonate, polyester, fluoropolymer chains,or a combination or copolymer of at least two of these.

29. The element of any one of claims 26 to 28, which further comprises an alkali metal salt, preferably a lithium salt, preferably a salt comprising a cation of an alkali metal (preferably Li), and an anion selected from hexafluorophosphate (PF6-), bis(trifluoromethanesulfonyl)imide (TFSI-), bis(fluorosulfonyl)imide (FSI-), (flurosulfonyl)(trifluoromethanesulfonyl)imide ((FSI)(TFSI)-), 2-trifluoromethyl-4,5-dicyanoimidazolate (TDI-), 4,5-dicyano-1,2,3-triazolate (DCTA-), bis(pentafluoroethylsulfonyl)imide (BETI-), difluorophosphate (DFP-), tetrafluoroborate (BF4-), bis(oxalato)borate (BOB-), nitrate (NO3-), chloride (Cl-), bromide (Br-), fluoride (F-), perchlorate (ClO4-), hexafluoroarsenate (AsF6-), trifluoromethanesulfonate (SO3CF3-) (Tf-), fluoroalkylphosphate [PF3(CF2CF3)3-] (FAP-), tetrakis(trifluoroacetoxy)borate [B(OCOCF3)4]- (TFAB-), bis(1,2-benzenediolato(2-)-O,O')borate [B(C6O2)2]- (BBB-), difluoro(oxalato)borate (BF2(C2O4) -) (FOB-), an anion of formula BF2O4R, x - (where R x = C 2-4 alkyl), and one of their combinations, for example LiTFSI or LiFSI.

30. The element of any one of claims 26 to 29, which further comprises at least one organic additive (e.g., an ionic organic additive (liquid or solid), a thiol, a plasticizer, etc.).

31. The element of any one of claims 1 to 25, wherein the element is an electrode material further comprising an electrochemically active material.

32. The element of claim 31, wherein the compound is dispersed in the electrode material, and / or forms a coating on particles comprising the electrochemically active material and / or on particles of another component. 33.The element of claim 31 or 32, wherein the electrochemically active material is selected from a metal oxide, a metal sulfide, a metal oxysulfide, a metal phosphate, a metal fluorophosphate, a metal oxyfluorophosphate, a metal sulfate, a metal halide, a metal fluoride, sulfur, selenium, and a combination of at least two thereof.

34. The element of claim 33, wherein the metal of the electrochemically active material is selected from titanium (Ti), iron (Fe), manganese (Mn), vanadium (V), nickel (Ni), cobalt (Co), aluminum (Al), chromium (Cr), copper (Cu), zirconium (Zr), niobium (Nb), and a combination of at least two thereof.

35. The element of claim 33 or 34, wherein the metal of the electrochemically active material further comprises an alkali or alkaline earth metal, preferably selected from lithium (Li), sodium (Na), potassium (K) and magnesium (Mg). 36.The element of any one of claims 31 to 35, wherein the electrochemically active material is a lithium metal oxide, preferably a mixed oxide of lithium, nickel, manganese and cobalt (NCM).

37. The element of any one of claims 31 to 35, wherein the electrochemically active material is a lithium metal phosphate, preferably a lithium iron phosphate.

38. The element of claim 31 or 32, wherein the electrochemically active material is selected from a non-alkaline or non-alkaline earth metal, an intermetallic compound, a metal oxide, a metal nitride, a metal phosphide, a metal phosphate, a metal halide, a metal fluoride, a metal sulfide, a metal oxysulfide, a carbon, silicon (Si), a silicon-carbon (Si-C) composite, a silicon oxide (SiO x ), a silicon oxide-carbon composite (SiO x-C), tin (Sn), a tin-carbon composite (Sn-C), a tin oxide (SnO x ), a tin oxide-carbon composite (SnO x-C), and a combination of at least two thereof.

39. The element of any one of claims 31 to 38, wherein the electrochemically active material further comprises a doping element.

40. The element of any one of claims 31 to 39, wherein the electrochemically active material further comprises a coating material.

41. The element of claim 40, wherein the coating material forms a coating layer on the surface of said electrochemically active material and the compound is optionally disposed on the surface of the coating layer.

42. The element of claim 40 or 41, wherein the coating material is selected from Li2SiO3, LiTaO3, LiAlO2, Li2O-ZrO2, LiNbO3, preferably LiNbO3, other similar coating materials and a combination of at least two thereof.

43. The element of claim 40 or 41, wherein the coating material is an electronically conductive material, preferably carbon.

44. The element of any one of claims 31 to 43, further comprising at least one electronically conductive material, preferably selected from the group consisting of carbon black, acetylene black, graphite, graphene, carbon fibers, carbon nanofibers, carbon nanotubes, preferably carbon black, and a combination of at least two thereof.

45. The element of claim 43 or 44, wherein the surface of said electronically conductive material is grafted with at least one aryl group of Formula II:. I wherein, FG is a hydrophilic functional group; and n is a natural integer in the range 1 to 5, preferably n is in the range 1 to 3, preferably n is 1 or 2, and more preferably n is 1.

46. The element of claim 45, wherein the hydrophilic functional group is a carboxylic acid or sulfonic acid functional group, preferably the aryl group of Formula II is p-benzoic acid or p-benzenesulfonic acid.

47. The element of any one of claims 31 to 46, which further comprises at least one additive, for example the additive being present in the core of a coated particle.

48. The element of claim 47, wherein the additive is selected from inorganic ionic conductive materials, inorganic materials, glasses, glass-ceramics, ceramics, nano-ceramics, salts and a combination of at least two of these. 49.The element of claim 47 or 48, wherein the additive comprises ceramic, glass or glass-ceramic particles based on fluoride, phosphide, sulfide, oxysulfide or oxide.

50. The element of any one of claims 47 to 49, wherein the additive is selected from compounds of the LISICON, thio-LISICON, argyrodites, garnets, NASICON, perovskites, oxides, sulfides, oxysulfides, phosphides, fluorides, sulfur halides, phosphates, thio-phosphates, in crystalline and / or amorphous form, and a combination of at least two thereof.

51. The element of any one of claims 47 to 50, wherein the additive is selected from inorganic compounds of formulae:. - MLZO (for example, M7La3Zr2O 12 , M (7-a) La3Zr2Al b O 12 , M (7-a) La3Zr2Ga b O 12 , M (7- a) La3Zr (2-b) Your b O 12 , and M (7-a)La3Zr (2-b) Nb b OR 12 ); - MLTaO (for example, M7La3Ta2O 12 , M5La3Ta2O 12 , and M6La3Ta 1.5 Y 0.5 OR 12 ); - MLSnO (for example, M7La3Sn2O 12 ); - MAGP (par exemple, M 1+a To the a Ge 2-a (PO4)3); - MATP (see example, M 1+a To the a You 2-a (PO4) 3, ); - MLTiO (for example, M 3a There (2 / 3-a) TiO3); - MZP (for example, M a Zr b (PO4) c); - MCZP (e.g., MaCabZrc(PO4)d); - MGPS (e.g., MaGebPcSd such as M10GeP2S12); - MGPSO (e.g., MaGebPcSdOe); - MSiPS (e.g., MaSibPcSd such as M10SiP2S12); - MSiPSO (e.g., MaSibPcSdOe); - MSnPS (e.g., MaSnbPcSd such as M10SnP2S12); - MSnPSO (e.g., MaSnbPcSdOe); - MPS (e.g., MaPbSc such as M7P3S11); - MPSO (e.g., MaPbScOd); - MZPS (e.g., MaZnbPcSd); - MZPSO (e.g., MaZnbPcSdOe); - xM2S-yP2S5; - xM2S-yP2S5-zMX; - xM2S-yP2S5-zP2O5; - xM2S-yP2S5-zP2O5-wMX; - xM2S-yM2O-zP2S5; - xM2S-yM2O-zP2S5-wMX; - xM2S-yM2O-zP2S5-wP2O5; - xM2S-yM2O-zP2S5-wP2O5-vMX; - xM2S-ySiS2; - MPSX (for example, M a P b S c X d such as M7P3S 11 X, M7P2S8X, and M6PS5X); - MPSOX (e.g., M a P b S c O d X e ); - MGPSX (e.g., M a Ge b P c S d X e ); - MGPSOX (e.g., M a Geb P c S d O e X f ); - MSiPSX (e.g., M a If b P c S d X e ); - MSiPSOX (e.g., M a If b P c S d O e X f ); - MSnPSX (for example, M a Sn b P c S d X e ); - MSnPSOX (e.g., M a Sn b P c S d O e X f ); - MZPSX (e.g., M a Zn b P c S d X e ); - MZPSOX (e.g., M a Zn b P c S d O e X f); - M3OX; - M2HOX; - M3PO4; - M3PS4; and - MaPObNc (where a = 2b + 3c - 5); wherein, M is an alkali metal ion, an alkaline earth metal ion or a combination thereof, and wherein when M comprises an alkaline earth metal ion, then the number of M is adjusted to achieve electroneutrality; X is selected from F, Cl, Br, I or a combination of at least two thereof; a, b, c, d, e and f are non-zero numbers and are, independently in each formula, selected to achieve electroneutrality; and v, w, x, y and z are non-zero numbers and are, independently in each formula, selected to obtain a stable compound.

52. The element of claim 50 or 51, wherein the additive is a ceramic comprising sulfur atoms, for example, of the sulfide or oxysulfide type, preferably as defined in any one of claims 22 to 24. 53.The element of any one of claims 31 to 52, which further comprises a binder.

54. The element of claim 53, wherein the binder is selected from the group consisting of a polyether, polycarbonate, polyester, fluoropolymer polymer binder, and a rubber binder, or a combination of at least two thereof.

55. An electrode comprising the element of any one of claims 31 to 54, optionally on a current collector.

56. Electrolyte comprising the element of any one of claims 1 to 30.

57. Compound as defined in any one of claims 1 to 18.

58. Compound of claim 57, which is selected from compounds 1 to 8.

59. Compound comprising at least one H2S trapping group and at least one saturated or unsaturated, linear or branched aliphatic group having at least 6 carbons, or at least 10 carbons, the aliphatic group being optionally substituted.

60. Compound according to claim 59, in which the aliphatic group has from 10 to 50 carbon atoms.

61. Compound according to claim 59 or 60, which is of formula (R 1 )p(X 1 )m, in which R 1 is the optionally substituted aliphatic group, X 1is the H2S trapping group, and p and m are numbers selected from the range 1 to 4.

62. A compound according to claim 61, wherein p is selected from the range 2 to 4, preferably 3.

63. A compound of claim 61 or 62, wherein (X 1)m forms a triazine group.

64. A compound according to any one of claims 59 to 63, wherein the aliphatic group is unsaturated and comprises at least one carbon-carbon double bond or triple bond.

65. Compound according to claim 64, in which the unsaturated aliphatic group is selected from the groups decenyl, dodecenyl, undecenyl, tridecenyl, tetradecenyl, pentadecenyl, hexadecenyl, heptadecenyl, octadecenyl, 1,9-decadienyl, docosenyl, hexacosenyl, eicosenyl, tetracosenyl, squalenyl, farnesyl, β-carotenyl, pinenyls, dicyclopentadienyl, camphenyl, α-phellandrenyl, β-phellandrenyl, terpinenyls, β-myrcenyl, limonenyl, 2-carenyl, sabinenyl, α-cedrenyl, copaenyl, β-cedrenyl, decynyl, dodecynyl, octadecynyl, hexadecynyl, tridecynyl, tetradecynyl, and docosynyl, or a 66. A compound according to claim 65, wherein the unsaturated aliphatic group is selected from decenyl, dodecenyl, undecenyl, tridecenyl, tetradecenyl, pentadecenyl, hexadecenyl, heptadecenyl, octadecenyl, 1,9-decadienyl, docosenyl, hexacosenyl, eicosenyl, tetracosenyl, squalenyl, farnesyl, β-carotenyl, and a combination of at least two of these, the group optionally comprising one or more substituents.

67. Compound according to claim 66, in which the unsaturated aliphatic group is chosen from decenyl, undecenyl, octadecenyl, squalenyl, farnesyl, β-carotenyl groups, and a combination of at least two of these, the group optionally comprising one or more substituents. 68.A compound according to claim 66, wherein the unsaturated aliphatic group comprises a farnesyl group, the group optionally comprising one or more substituents, preferably a farnesyl group.

69. A compound according to claim 59, which is selected from Compounds 1 and 6.

70. A composition comprising at least one compound according to any one of claims 57 to 69.

71. A composition according to claim 70, which further comprises an additional component.

72. A composition according to claim 71, wherein the additional component is an alkane or a mixture comprising an alkane and a solvent, preferably wherein the alkane comprises from 10 to 50 carbon atoms, preferably the alkane is decane. 73.A composition according to claim 72, wherein the solvent is selected from dichloromethane, tetrahydrofuran, acetonitrile, N,N-dimethylformamide and a miscible combination of at least two thereof, preferably the polar solvent is dichloromethane.

74. A composition according to any one of claims 70 to 73, further comprising a material comprising sulfur atoms, the composition forming a mixture including the material comprising sulfur atoms or coated particles comprising a core of the material comprising sulfur atoms, the material comprising sulfur atoms preferably being as defined in any one of claims 21 to 25.

75. An electrolyte comprising the compound as defined in any one of claims 57 to 69 or a composition as defined in any one of claims 70 to 74.

76. An electrolyte according to claim 75, which is a liquid electrolyte comprising a salt in a solvent. 77.Electrolyte according to claim 75, which is a solid polymer electrolyte comprising a salt in a solvating polymer, the solvating polymer preferably being selected from polymers comprising polyether, polycarbonate, polyester, fluoropolymer chains, or a combination or copolymer of at least two of these.

78. Electrolyte according to claim 75, which is a polymer-ceramic composite solid electrolyte, the polymer preferably being selected from polymers of polyether, polycarbonate, polyester, fluoropolymer type, or a combination or copolymer of at least two of these.

79. Electrolyte according to claim 75, which is an inorganic solid electrolyte.

80. Electrolyte according to claim 79, which is an inorganic solid electrolyte of ceramic type.

81. An electrolyte according to claim 78 or 80, wherein the compound is present in a coating on the surface of the ceramic particles. 82.An electrolyte according to claim 78 or 80, wherein the compound is dispersed in the electrolyte.

83. An electrolyte according to any one of claims 75 to 82, which further comprises an alkali metal salt, preferably a lithium salt, preferably the salt comprises a cation of an alkali metal (preferably Li), and an anion selected from hexafluorophosphate (PF6-), bis(trifluoromethanesulfonyl)imide (TFSI-), bis(fluorosulfonyl)imide (FSI-), (flurosulfonyl)(trifluoromethanesulfonyl)imide ((FSI)(TFSI)-), 2-trifluoromethyl-4,5-dicyanoimidazolate (TDI-), 4,5-dicyano-1,2,3- triazolate (DCTA-), bis(pentafluoroethylsulfonyl)imide (BETI-), difluorophosphate (DFP-), tetrafluoroborate (BF4-), bis(oxalato)borate (BOB-), nitrate (NO3-), chloride (Cl-), bromide (Br-), fluoride (F-), perchlorate (ClO4-), hexafluoroarsenate (AsF6-), trifluoromethanesulfonate (SO3CF3-) (Tf-), fluoroalkylphosphate [PF3(CF2CF3)3-] (FAP-), tetrakis(trifluoroacetoxy)borate [B(OCOCF3)4]- (TFAB-), bis(1,2-benzenediolato(2-)-O,O')borate [B(C6O2)2]- (BBB-),difluoro(oxalato)borate (BF2(C2O4)-) (FOB-), an anion of formula BF2O4Rx- (where Rx = C2-4alkyl), and one of their combinations, for example LiTFSI or LiFSI.

84. An electrolyte according to any one of claims 75 to 83, which further comprises at least one organic additive (for example, an ionic organic additive (liquid or solid), a thiol, a plasticizer, etc.).

85. Coated particles for use in an electrochemical cell: said coated particle comprising: a core comprising an electrochemically active material, an electronically conductive material or an ionically conductive inorganic material; and a coating material comprising a compound as defined in any one of claims 57 to 69, or a composition as defined in any one of claims 70 to 74,the coating material being disposed on the surface of the core; or said coated particle comprising the composition as defined in claim 74.

86. Coated particles according to claim 85, wherein the coating material forms a homogeneous coating layer on the surface of the core., 87. Coated particles according to claim 85, wherein the coating material forms a coating layer on at least a portion of the surface of the core.

88. Coated particles according to claim 87, wherein the coating material is heterogeneously dispersed on the surface of the core.

89. Coated particles according to any one of claims 85 to 88, which are used in an electrode material.

90. Coated particles according to any one of claims 85 to 88, which are used in an electrolyte.

91. Coated particles according to any one of claims 85 to 88, which are used in a current collector or an electrochemical cell surface (such as an inner surface of a case or bag, a surface of a substrate (film) included in a cell, etc.). 92.A method of manufacturing coated particles as defined in any one of claims 85 to 91, the method comprising at least one step of coating at least a portion of the surface of the core with the coating material.

93. The method of claim 92, wherein the coating step is carried out by a dry coating process.

94. The method of claim 92, wherein the coating step is carried out by a wet coating process.

95. The method of claim 94, wherein the wet coating process is a mechanical coating process.

96. The method of claim 95, wherein the mechanical coating process is a mechanosynthesis or mechanofusion process. 97.A method according to any one of claims 92 to 96, which further comprises a step of grinding the electrochemically active material, the electronically conductive material or the ionically conductive inorganic material of the core of the coated particle.

98. The method of claim 97, wherein the coating and grinding steps are performed simultaneously, sequentially, or partially overlap in time.

99. The method of claim 98, wherein the coating and grinding steps are performed simultaneously.

100. An electrode material comprising: - coated particles as defined in any one of claims 85 to 91, wherein the core of the coated particle comprises an electrochemically active material; and / or - an electrochemically active material and a compound as defined in any one of claims 57 to 69, a composition as defined in any one of claims 70 to 74, or coated particles as defined in any one of claims 85 to 91. 101.An electrode material according to claim 100, wherein the electrode material comprises at least one material or compound comprising sulfur atoms, or is for use with an electrolyte comprising a material or compound comprising sulfur atoms.

102. An electrode material according to claim 100 or 101, wherein the core of the coated particle comprises the electrochemically active material.

103. An electrode material according to any one of claims 100 to 102, wherein the electrochemically active material is as defined in any one of claims 33 to 43.

104. An electrode material according to any one of claims 100 to 103, which further comprises at least one electronically conductive material, preferably as defined in any one of claims 44 to 46.

105. An electrode material according to any one of claims 100 to 104, which further comprises at least one additive.

106. An electrode material according to claim 105, wherein the core of the coated particle comprises the additive.

107. An electrode material according to claim 105 or 106, wherein the additive is as defined in any one of claims 48 to 52.

108. An electrode material according to any one of claims 100 to 107, which further comprises a binder, preferably selected from the group consisting of a polyether, polycarbonate, polyester, fluoropolymer polymer binder, and a rubber binder, or a combination of at least two thereof.

109. An electrode comprising the electrode material as defined in any one of claims 100 to 108 optionally on a current collector. 110.An electrochemical cell comprising a negative electrode, a positive electrode and an electrolyte, wherein at least one of the positive electrode or the negative electrode is as defined in claim 55 or 109, preferably the positive electrode.

111. An electrochemical cell comprising a negative electrode, a positive electrode and an electrolyte, wherein the electrolyte is as defined in any one of claims 56 and 74 to 84.

112. An electrochemical cell according to claim 110 or 111, wherein the negative electrode comprises an electrochemically active material comprising an alkali metal, an alkaline earth metal, an alloy comprising at least one alkali or alkaline earth metal, a non-alkaline and non-alkaline earth metal, or an alloy or an intermetallic compound. 113.An electrochemical cell according to claim 112, wherein the electrochemically active material of the negative electrode comprises metallic lithium or an alloy including or based on metallic lithium.

114. An electrochemical cell according to claim 112 or 113, wherein the electrochemically active material of the negative electrode is in the form of a film having a thickness in the range of from about 5 µm to about 500 µm, terminals. upper and lower limits inclusive, preferably in the range from about 10 µm to about 100 µm, upper and lower limits inclusive.

115. An electrochemical cell according to any one of claims 110 or 111, wherein the positive electrode is pre-lithiated and the negative electrode is substantially free of lithium.

116. An electrochemical cell according to any one of claims 115, wherein the negative electrode is lithiated in situ during cycling of said electrochemical cell.

117. A battery comprising at least one electrochemical cell as defined in any one of claims 110 to 116.

118. A battery according to claim 117, which is a battery selected from a lithium battery, a lithium-ion battery, a sodium battery, a sodium-ion battery, a magnesium battery, a magnesium-ion battery. 119.Battery according to claim 117, which is a lithium battery or a lithium-ion battery.

120. Battery according to any one of claims 117 to 119, which is a so-called all-solid-state battery.

121. Method for trapping H2S comprising a step of contacting a compound as defined in any one of claims 57 to 69 with a source of H2S.

122. Method according to claim 121, which further comprises dissolving the compound.

123. Method according to claim 121 or 122, wherein the source of H2S is a ceramic comprising sulfur atoms, for example, of the sulfide or oxysulfide type.

124. Method according to claim 123, wherein the ceramic is selected from inorganic compounds of formulae:. - MGPS (e.g., M a Ge b P c S d such as M 10 GeP2S 12 ); - MGPSO (e.g., M a Ge b P c S dOH e ); - MSiPS (e.g., M a If b P c S d such that M 10 SiP2S 12 ); - MSiPSO (e.g., M a If b P c S d OH e ); - MSnPS (e.g., M a Sn b P c S d such that M 10 SnP2S 12 ); - MSnPSO (e.g., M a Sn b P c S d OH e ); - MPS (e.g., M a P b S c such as M7P3S 11 ); - MPSO (e.g., M a P b S c OH d); - MZPS (e.g., MaZnbPcSd); - MZPSO (e.g., MaZnbPcSdOe); - xM2S-yP2S5; - xM2S-yP2S5-zMX; - xM2S-yP2S5-zP2O5; - xM2S-yP2S5-zP2O5-wMX; - xM2S-yM2O-zP2S5; - xM2S-yM2O-zP2S5-wMX; - xM2S-yM2O-zP2S5-wP2O5; - xM2S-yM2O-zP2S5-wP2O5-vMX; - xM2S-ySiS2; - MPSX (e.g., MaPbScXd such as M7P3S11X, M7P2S8X, and M6PS5X); - MPSOX (e.g., MaPbScOdXe); - MGPSX (e.g., MaGebPcSdXe); - MGPSOX (e.g., MaGebPcSdOeXf); - MSiPSX (e.g., MaSibPcSdXe); - MSiPSOX (e.g., MaSibPcSdOeXf); - MSnPSX (e.g., MaSnbPcSdXe); - MSnPSOX (e.g., MaSnbPcSdOeXf); - MZPSX (e.g., M a Zn b P c S d X e ); - MZPSOX (e.g., M a Zn b P c S d O e X f ); and - M3PS4; in which, M is an alkali metal ion, an alkaline earth metal ion or a combination thereof, and wherein when M comprises an alkaline earth metal ion, then the number of M is adjusted to achieve electroneutrality; X is selected from F, Cl, Br, I or a combination of at least two thereof; a, b, c, d, e and f are non-zero numbers and are, independently in each formula, selected to achieve electroneutrality; and v, w, x, y and z are non-zero numbers and are, independently in each formula, selected to obtain a stable compound.

125. The method of claim 124, wherein M is selected from Li, Na, K, Rb, Cs, Be, Mg, Ca, Sr, Ba or a combination of at least two thereof, preferably N is Li. 126.A method according to any one of claims 123 to 125, wherein the ceramic is selected from inorganic compounds of formula LiaPbScXd, where a, b, c and d are such that (a + 5b) = (2c + d), for example compounds of formula Li6PS5X, where X is Cl, Br, I or a combination thereof, the compound possibly being of the argyrodite type.

127. A method according to any one of claims 123 to 125, wherein the ceramic is Li6PS5Cl.

128. A method according to any one of claims 121 or 122, wherein the source of H2S comprises H2S, elemental sulfur, a salt comprising unoxidized sulfur atoms, a polymer comprising sulfur atoms, an organic compound comprising sulfur atoms, or a combination of two or more thereof.

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