848results about "Sulfide conductors" patented technology

A sulfide solid electrolyte, which is able to adjust the morphology unavailable traditionally, or is readily adjusted so as to have a desired morphology, the sulfide solid electrolyte having a volume-based average particle diameter measured by laser diffraction particle size distribution measurement of 3 μm or more and a specific surface area measured by the BET method of 20 m2 / g or more; and a method of treating a sulfide solid electrolyte including the sulfide solid electrolyte being subjected to at least one mechanical treatment selected from disintegration and granulation.

Provided are: a crystalline sulfide solid electrolyte, which has an improved ionic conductivity while adopting a liquid phase method, contains predetermined atoms, has a diffraction peak in X-ray diffractometry using a predetermined CuKα ray, and has a thio-LISICON Region II-type crystal structure as a basic structure; and a method for producing a crystalline sulfide solid electrolyte, the method including mixing using predetermined complexing agents and an instant drying step.

The purpose of the present invention is to provide a method for, by using a sulfide solid electrolyte, producing a new sulfide solid electrolyte. The present invention pertains to a method for producing a sulfide solid electrolyte, the method comprising: heating and melting a wet-ground first sulfide solid electrolyte to obtain a melt; removing carbon from the melt; and cooling the carbon-removed melt to obtain a second sulfide solid electrolyte.

A method for producing a sulfide-based inorganic solid electrolyte material, the method including a step of obtaining a sulfide-based inorganic solid electrolyte material in a vitreous state by mechanically processing a raw material composition of the sulfide-based inorganic solid electrolyte material including lithium sulfide and a phosphorus sulfide composition such that each component is vitrified in a chemical reaction, in which the phosphorus sulfide composition has three or more peaks in a range of 2θ = 22.5° or more and 24.5° or less in an X-ray diffraction analysis spectrum obtained by X-ray diffraction analysis.

A solid electrolyte according to one aspect of the present invention is a solid electrolyte containing lithium, phosphorus, sulfur, aluminum, nitrogen, bromine, and iodine as constituent elements and having a crystal structure, wherein the solid electrolyte satisfies conditions (a), (b), or (c) below when a molar ratio of the lithium to the phosphorus is represented by r1, a molar ratio of a sum of the bromine and the iodine to the phosphorus is represented by r2, and a molar ratio of a sum of the bromine and the iodine to the nitrogen is represented by r3. 3.00≤r1−r2≤3.60and1.5≤r3≤100 2.80≤r1−r2<3.00and2.0≤r3≤100 2.60≤r1−r2<2.80and2.5≤r3≤100

The present invention pertains to a sulfide solid electrolyte containing a sulfide-based glass phase, wherein: when differential scanning calorimetry is performed at a heating rate of 5°C / min, the sulfide-based glass phase has an exothermic peak at which a highly ionically conductive crystal is precipitated; the exothermic peak can be separated into two or more peaks; and the temperature difference between the peak top of the peak farthest on the high temperature side and the peak top of the peak farthest on the low temperature side among the two or more peaks separated by the peak separation is 0.5°C or more.

The present invention provides a method for producing lithium hydroxide, comprising the steps of reacting lithium carbonate and calcium hydroxide in a liquid to obtain a solution containing lithium hydroxide, and performing solid-liquid separation on the solution into a liquid component containing lithium hydroxide and a solid component containing lithium derived from the lithium carbonate, and recovering lithium hydroxide from the liquid component.

A method for producing a sulfide solid electrolyte, which includes obtaining a mixture by mixing a raw material inclusion containing a lithium atom, a phosphorus atom, a sulfur atom, and a halogen atom in an organic solvent; and performing microwave irradiation on the mixture, is provided, and thereby a sulfide solid electrolyte can be efficiently produced while maintaining a particle diameter by reducing a heating temperature and suppressing granulation due to heating by employing a liquid phase method.

The present invention relates to a method of preparing a sulfide-based solid electrolyte, which includes steps of (A) preparing a reaction mixture by grinding each of sulfide-based solid electrolyte raw materials and mixing the ground raw materials; (B) compressing the reaction mixture into a form of a pellet; and (C) preparing a sintered product by sintering the reaction mixture in the form of a pellet, and a sulfide-based solid electrolyte prepared thereby.

Provided herein are methods for synthesizing a sulfide-based solid state electrolyte, including a sulfide-based solid state electrolyte having an argyrodite phase. The methods generally include mixing an electrolyte precursor in a blend of solvents, the blend of solvents including a catalytic solvent and a spectator solvent.

A solid electrolyte composition of the present disclosure includes a solvent and an ion conductor including a solid electrolyte, a binder, and a nitrogen-containing organic substance and being dispersed in the solvent. The solid electrolyte includes a sulfide solid electrolyte, the binder includes a styrenic elastomer, and the nitrogen-containing organic substance includes at least one selected from the group consisting of primary amines, secondary amines, aminohydroxy compounds, and diamines. The primary amines, the secondary amines, the aminohydroxy compounds, and the diamines each have at least one selected from the group consisting of chain alkyl groups having 8 or more carbon atoms and chain alkenyl groups having 8 or more carbon atoms. The mass proportion of the nitrogen-containing organic substance to the solid electrolyte is 0.30 mass % or more.

To provide a method for manufacturing a sulfide solid electrolyte that suppresses discharge of N to the outside of the system in a manufacturing process of the sulfide solid electrolyte, a method for selecting a raw material compound used for manufacturing of the same, and an all-solid-state battery including the sulfide solid electrolyte; and a sulfide solid electrolyte having improved thermal stability, a method for manufacturing the same, and an all-solid-state battery including the sulfide solid electrolyte.SOLUTION: A sulfide solid electrolyte contains, as constituent elements, P, S, N, elemental A, elemental X, and elemental M, and has a crystal structure. A represents at least one element selected from the group consisting of Li, Na, and K. X represents at least one element selected from the group consisting of Cl, Br, and I. M represents at least one element selected from the group consisting of Al, Ta, Si, Sc, Mg, Nb, B, Hf, C, P, Zr, and Ti. In an all-solid-state battery 10, an anode layer 1, a solid electrolyte layer 3, a cathode layer 2, or a combination thereof contains the sulfide solid electrolyte, and this configuration leads to excellent initial coulombic efficiency.SELECTED DRAWING: Figure 2

The present invention relates to a solid electrolyte, a method for manufacturing the same, and a lithium secondary battery including the same. In the solid electrolyte according to an embodiment of the present invention, a part of a halogen element can be doped with oxygen.

A solid electrolyte composition including (A) a sulfide solid electrolyte including lithium, phosphorus and sulfur, and (B) one or more compounds selected from the compounds represented by the following formulas (1) to (17).R11R12R13P  (1)(NR21R22)(NR23R24)(NR25R26)P  (2)R31R32R33PS  (3)(NR41R42)(NR43R44)(NR45R46)PS  (4)R51SH  (5)R61COOR62  (6)R71NH2  (7)R81R32R33N  (8)R91(OA)nOH  (9)(R101O)(R102O)(R103O)P  (10)R111R112R113R114M1  (11)R121R122R123M2  (12)R131R132R133M3  (13)R141—C(═O)NH—R142  (14)R151R152R153C—OH  (15)R161—O—R162  (16)(SR171)(SR172)(SR173)P  (17)

To provide a sulfide solid electrolyte excellent in ionic conductivity and particularly suitable for high output solid state battery, and a method for producing the sulfide solid electrolyte.SOLUTION: The sulfide solid electrolyte of the present invention has a crystal structure of the LGPS type belonging to the space group P42 / nmc, and has a full width at half maximum of the peak at 2θ=29.58°±1.0° of 0.1 or less in X-ray diffraction measurements using CuKα radiation. The producing method of the sulfide solid electrolyte of the present invention uses elemental sulfur as a raw material, and the volume ratio of the elemental sulfur in the entire mixed raw material when heated at 120°C is set to be 20% or more. Furthermore, when the heating temperature is T°C, and the holding time is h hours, T×h is 1000 or more.SELECTED DRAWING: None

To provide a method for producing a solid electrolyte, a method for producing a separator, a method for producing an electrode, and a method for producing a power storage device, the methods enabling reduction of interfacial resistance.SOLUTION: A method for producing a solid electrolyte comprises contacting an aprotic organic solvent in which an alkali metal salt is dissolved with a fracture surface of an oxide-based solid electrolyte, thereby forming on the fracture surface a surface layer derived from the alkali metal salt. A method for producing a separator, a method for producing an electrode, and a method for producing a power storage device each comprise a step of disposing a solid electrolyte obtained by the method for producing the solid electrolyte.SELECTED DRAWING: Figure 1

A solid electrolyte composition comprising: (A) a sulfide solid electrolyte containing lithium, phosphorus, and sulfur; and (B) one or more compounds selected from among compounds represented by formulae (1)-(17). R < 11 > R < 12 > R < 13 > P (1); (NR21R22) (NR23R24) (NR25R26) P (2); (3), R31R32R33PS (3); (NR41R42) (NR43R44) (NR45R46) PS (4); r51SH (5); r < 61COOR < 62 > (6); r71NH2 (7); r81R82R83N (8); r91 (OA) nOH (9); (R101O) (R102O) (R103O) P (10); (11), R < 11 > < 1 > < 12 > < 1 > < 13 > < 1 > < 14 > M1; r < 121 > R < 122 > R < 123 > M < 2 > (12); r131R132R133M3 (13), R131R132R133M3 (13) R141-C (= O) NH-R142 (14); r < 151 > R < 152 > R < 153 > C-OH (15); r < 161 >-O-R < 162 > (16); (SR171) (SR172) (SR173) P (17).

A positive electrode material according to an aspect of the present disclosure includes a positive electrode active material and a first solid electrolyte that coats the surface of the positive electrode active material. The first solid electrolyte contains Li, M1, O, and X1. M1 is at least one element selected from the group consisting of Nb and Ta. X1 is at least one element selected from the group consisting of Cl, Br, and I.

To provide an anode-free all-solid-state battery that is improved in discharge capacity and cycle characteristics, and also to provide an anode-free all-solid-state battery that can be driven with low constraining pressure.SOLUTION: The present disclosure provides an all-solid-state battery which includes a positive electrode including a positive electrode active material layer, a negative electrode current collector, and a solid electrolyte layer disposed between the positive electrode and the negative electrode current collector. The all-solid-state battery does not contain a negative electrode active material, lithium ions are supplied from the positive electrode active material layer by charging, a lithium metal layer as a negative electrode active material is formed on the negative electrode current collector, and the solid electrolyte layer includes a sulfide-based solid electrolyte containing a group 2 element and having an argyrodite-type crystal structure.SELECTED DRAWING: Figure 5

A solid electrolyte according to the present invention includes, as a main component, a component where, using values a-f that are larger than 0, the compositional formula thereof is represented by Lia+dMbXcAeOf (wherein, M is an element that is trivalent when a cation, X is a halogen element, and A is elemental sulfur or elemental phosphorus), and 0.8c≤(a+3b)≤1.2c and 1.6f≤(d+n×e)≤2.4f (wherein, n is 4 or 6 when A is elemental sulfur, and n is 5 when A is elemental phosphorus) are satisfied. As a result, it is possible to provide a solid electrolyte having high temperature stability and high lithium ion conductivity.

Provided are a method for treating a sulfur-atom-containing material including bringing at least one sulfur-atom-containing material selected from a raw material containing a sulfur atom, an electrolyte precursor containing a sulfur atom, and a sulfide solid electrolyte into contact with a liquid base oil, and bringing the resulting inclusion containing the sulfur-atom-containing material and the liquid base oil into contact with an alkaline aqueous solution, which can safely and effectively cope with the occurrence of leakage of the sulfur-atom-containing material such as a raw material, an intermediate, and a product containing a sulfur atom; an apparatus for producing the sulfur-atom-containing material; and a device and a container for transporting the sulfur-atom-containing material.

The present invention relates to a sulfide solid electrolyte which contains a sulfide glass phase, contains a PS4 unit and a P2S7 unit, in which the ratio of the peak intensity I of the PS4 unit to the peak intensity I of the P2S7 unit in a Raman spectrum satisfies the relationship 0.05 < {I (P2S7) / I (PS4)} < 1.00, contains Li, P, S and Ha as constituent elements, and in which the contents of the constituent elements in at% are 30-50% of Li, 5-15% of P, and 30-60% of S.

The present invention relates to a novel process for preparing lithium argyrodite, as well as to the products obtained by said process and their use, in particular as solid electrolytes.

Provided is a solid-state battery that has superior performance. This solid-state battery comprises a positive electrode, a solid electrolyte layer, and a negative electrode in the stated order. The solid electrolyte layer is divided into three equal portions in the thickness direction from the positive electrode toward the negative electrode, said portions constituting a first region, a second region, and a third region. The first region contains at least Li, P, S, and O, and each of the second region and the third region contains at least Li, P, and S. The average oxygen concentration of the first region is higher than the average oxygen concentration of the second region, and the average oxygen concentration of the second region is equal to or higher than the average oxygen concentration of the third region. The average oxygen concentration of the first region is higher than 0.08 and lower than 0.55. The average oxygen concentration of the third region is equal to or higher than 0 but lower than 0.3.

The present invention relates to glass which contains Li and P as elements constituting a cationic component and contains S as an element constituting an anionic component, and which has a composition that contains 30-42% of Li and 5-16% of P when displayed in atomic%, that has a glass transition point of 110-300°C, and that has a lithium ion conductivity of 2 mS / cm or more at 25°C.

The present invention relates to a production method of a solid electrolyte in which adopting a liquid-phase method, a solid electrolyte having a high ionic conductivity, in which the generation of hydrogen sulfide is suppressed, the method including mixing a raw material inclusion containing a lithium element, a sulfur element, a phosphorus element, and a halogen element with a complexing agent containing a compound having at least two tertiary amino groups in the molecule; and an electrolyte precursor constituted of a lithium element, a sulfur element, a phosphorus element, a halogen element, and a complexing agent containing a compound having at least two tertiary amino groups in the molecule.

A solid electrolyte membrane having favorable characteristics and a method of forming the same are provided. A solid electrolyte membrane 40 is composed of a non-woven fabric (ultrafine fiber non-woven fabric) UFN and solid electrolyte particles 4AP incorporated therein. Also, the non-woven fabric UFN includes a fiber (ultrafine fiber UF) made of a resin containing a polar filler. A method of manufacturing the solid electrolyte membrane 40 includes a step of preparing the non-woven fabric UFN including a fiber made of a resin containing a polar filler, a step of applying a slurry S containing the solid electrolyte particles 4AP onto the non-woven fabric UFN, and a step of heating while pressurizing the slurry S on the non-woven fabric UFN. Further, the non-woven fabric UFN is formed by making the resin containing the polar filler be a fibrous form by a laser electrospinning method.

The present application relates to a method for manufacturing a solid electrolyte having a kesterite-type crystal structure, comprising: a mixing step of mixing raw materials so that lithium (Li), phosphorus (P), sulfur (S), oxygen (O), and halogen (X) satisfy the following formulas (11) to (14); and a heating step of heating a mixture obtained by the mixing step. 4.8 ≤ Li / P ≤ 5.3 … (11) 3.8 ≤ S / P ≤ 4.4 … (12) 0 < O / P ≤ 0.8 … (13) 1.0 < X / P ≤ 2.0 … (14) (Formula (11) is a molar ratio of Li to P, formula (12) is a molar ratio of S to P, formula (13) is a molar ratio of O to P, and formula (14) is a molar ratio of halogen (X) to P.)

A sulfide solid electrolyte according to the present invention contains a compound that has a crystal phase having an argyrodite-type crystal structure and that is represented by LiaPSbXc, where X is at least one elemental halogen, a represents a number of 3.0 or more and 6.0 or less, b represents a number of 3.5 or more and 4.8 or less, and c represents a number of 0.1 or more and 3.0 or less. The sulfide solid electrolyte has a ratio of ALi / (ALi + AP + AS + AX) to a specific surface area (m2g-1) of 3.40 (m-2g) or more, where ALi represents the amount of lithium (atom%) quantitatively determined from the Li 1s peak, AP represents the amount of phosphorus (atom%) quantitatively determined from the P 2p peak, As represents the amount of sulfur (atom%) quantitatively determined from the S 2p peak, and Ax represents the amount of halogen (atom%) quantitatively determined from the halogen peak, the peaks being exhibited in X-ray photoelectron spectroscopy (XPS).

A solid electrolyte according to one aspect of the present invention contains a lithium element, a phosphorus element, a silicon element, a sulfur element, and a halogen element, in which the molar ratio (Si / (P+Si)) of the content of the silicon element to the total content of the phosphorus element and the silicon element is 0.04-0.55 inclusive, the molar ratio (S / (P+Si)) of the content of the sulfur element to the total content of the phosphorus element and the silicon element is 3.50-4.10 inclusive, the halogen element contains at least one of a bromine element and an iodine element, and the molar ratio ((Br+I) / X) of the total content of the bromine element and the iodine element to the content of the halogen element is 0.80 or more, and the solid electrolyte has a predetermined crystal structure.