Non-aqueous electrolyte, non-aqueous electrolyte battery, and compound

Abstract

The liquid crystal composition contains: (I) at least one compound selected from the group consisting of a compound represented by general formula (1), a compound represented by general formula (2), a compound represented by general formula (3), a compound represented by general formula (4-1), a compound represented by general formula (4-2), a compound represented by general formula (4-3), a compound represented by general formula (5), and a compound represented by general formula (6), which are described in the description; (II) a solute; and (III) a non-aqueous organic solvent, thereby providing a non-aqueous electrolyte solution having a low initial resistance value, a non-aqueous electrolyte solution battery, and a compound suitable for use in the non-aqueous electrolyte solution.

Description

Technical Field

[0001] The present disclosure relates to nonaqueous electrolytes, nonaqueous electrolyte batteries, and compounds. Background Art

[0002] So far, as a means to improve the durability of non-aqueous electrolyte batteries, such as cycle characteristics and high-temperature storage characteristics, the optimization of various battery components represented by the active materials of the positive and negative electrodes has been studied. Non-aqueous electrolyte-related technologies are no exception, and various additives have been proposed to suppress the deterioration caused by the decomposition of non-aqueous electrolytes on the surfaces of the active positive and negative electrodes.

[0003] For example, Patent Document 1 discloses a non-aqueous electrolyte for a lithium battery as a non-aqueous electrolyte capable of forming a lithium battery having excellent battery characteristics such as cycle characteristics, battery capacity, storage characteristics, and conductivity, wherein the non-aqueous electrolyte is a non-aqueous electrolyte in which an electrolyte is dissolved in a non-aqueous solvent, and the non-aqueous electrolyte further contains a pyrrolidone derivative.

[0004] Furthermore, Patent Document 2 discloses that a nonaqueous electrolyte secondary battery having excellent charge and discharge efficiency and capacity retention characteristics in a wide temperature range can be obtained by incorporating a nitrogen-containing heterocyclic compound such as pyrrolidone, oxazolidinone, or imidazolidinone into the nonaqueous electrolyte.

[0005] Prior art literature

[0006] Patent Literature

[0007] Patent Document 1: Japanese Patent Application Publication No. 2009-224281

[0008] Patent Document 2: Japanese Patent No. 5109213 Summary of the invention

[0009] Problem that the invention aims to solve

[0010] However, the inventors have conducted research and found that when these five-membered ring compounds having an amide group are added, an increase in internal resistance is confirmed, and there is no effect of improving the initial input / output characteristics or the effect is small. As such, there is room for research on resistance characteristics, especially initial resistance characteristics.

[0011] The present disclosure is made in view of the above circumstances, and its object is to provide a non-aqueous electrolyte and a non-aqueous electrolyte battery capable of reducing the initial resistance value of the battery. Another object is to provide a compound that can be suitably used in the non-aqueous electrolyte.

[0012] Solutions for solving problems

[0013] The present inventors have conducted intensive studies in view of the above problems and have found that:

[0014] The above-mentioned problem is solved by providing a non-aqueous electrolyte solution containing (I) at least one selected from the group consisting of a compound represented by the general formula (1) described later, a compound represented by the general formula (2), a compound represented by the general formula (3), a compound represented by the general formula (4-1), a compound represented by the general formula (4-2), a compound represented by the general formula (4-3), a compound represented by the general formula (5) and a compound represented by the general formula (6) (hereinafter sometimes referred to as "component (I)"); (II) a solute (hereinafter sometimes referred to as "component (II)"); and (III) a non-aqueous organic solvent (hereinafter sometimes referred to as "component (III)").

[0015] That is, the present inventors have found that the above-mentioned problems can be solved by the following configuration. [1]

[0017] A non-aqueous electrolyte solution comprising: (I) at least one selected from the group consisting of a compound represented by the following general formula (1), a compound represented by the following general formula (2), a compound represented by the following general formula (3), a compound represented by the following general formula (4-1), a compound represented by the following general formula (4-2), a compound represented by the following general formula (4-3), a compound represented by the following general formula (5) and a compound represented by the following general formula (6); (II) a solute; and (III) a non-aqueous organic solvent.

[0018]

[0019] [In the general formula (1), X 1 represents CH2, NH, O, S or SO2. 1 Represents CH or N. Z 1 Indicates CH2, O or NR 5 . R 5 represents a hydrogen atom, an alkali metal cation, or a linear or branched alkyl group having 1 to 12 carbon atoms, wherein an oxygen atom may be contained between carbon-carbon bonds in the alkyl group. In addition, any hydrogen atom in the alkyl group may be substituted with a fluorine atom. 5 In the case of an alkali metal cation, the nitrogen atom is 5 The bond represents an ionic bond.

[0020] R 1 Represents PO(R f )2 or SO2R f . R frepresents a halogen atom, a linear or branched alkyl group having 1 to 12 carbon atoms, a linear or branched alkenyl group having 3 to 12 carbon atoms, or a linear or branched alkynyl group having 2 to 12 carbon atoms, and at least one of an oxygen atom and a nitrogen atom is optionally contained between carbon-carbon bonds in the aforementioned alkyl, alkenyl or alkynyl group. Furthermore, any hydrogen atom of the aforementioned alkyl, alkenyl or alkynyl group is optionally substituted with a fluorine atom. There are multiple R f In the case of multiple R f Optional same or different.

[0021] n 1 is an integer from 1 to 3, R 2 , R 3 and R 4 Each independently represents a hydrogen atom or a linear or branched alkyl group having 1 to 12 carbon atoms, wherein an oxygen atom may be contained between carbon-carbon bonds in the alkyl group. Furthermore, any hydrogen atom in the alkyl group may be substituted with a fluorine atom. 4 In the case of multiple R 4 Optional: same or different.]

[0022]

[0023] [In the general formula (2), Y 2 and Y 3 Each independently represents CH or N. Z 2 and Z 3 Each independently represents CH2, O or NR 11 . R 11 represents a hydrogen atom, an alkali metal cation, or a linear or branched alkyl group having 1 to 12 carbon atoms, wherein an oxygen atom may be contained between carbon-carbon bonds in the alkyl group. In addition, any hydrogen atom in the alkyl group may be substituted with a fluorine atom. 11 In the case of an alkali metal cation, the nitrogen atom is 11 The bond represents an ionic bond.

[0024] R 6 and R 7 Each independently represents PO(R f )2 or SO2R f . R frepresents a halogen atom, a linear or branched alkyl group having 1 to 12 carbon atoms, a linear or branched alkenyl group having 3 to 12 carbon atoms, or a linear or branched alkynyl group having 2 to 12 carbon atoms, and at least one of an oxygen atom and a nitrogen atom is optionally contained between carbon-carbon bonds in the aforementioned alkyl, alkenyl or alkynyl group. Furthermore, any hydrogen atom of the aforementioned alkyl, alkenyl or alkynyl group is optionally substituted with a fluorine atom. There are multiple R f In the case of multiple R f Optional same or different.

[0025] n 2 is an integer from 1 to 3, R 8 , R 9 and R 10 Each independently represents a hydrogen atom or a linear or branched alkyl group having 1 to 12 carbon atoms, wherein an oxygen atom may be contained between carbon-carbon bonds in the alkyl group, and any hydrogen atom in the alkyl group may be substituted with a fluorine atom. 10 In the case of multiple R 10 Optional: same or different.]

[0026]

[0027] [In the general formula (3), Y 4 and Y 5 Each independently represents CH or N. Z 4 Indicates CH2, O or NR 17 . R 17 represents a hydrogen atom, an alkali metal cation, or a linear or branched alkyl group having 1 to 12 carbon atoms, wherein an oxygen atom may be contained between carbon-carbon bonds in the alkyl group. In addition, any hydrogen atom in the alkyl group may be substituted with a fluorine atom. 17 In the case of an alkali metal cation, the nitrogen atom is 17 The bond of R represents an ionic bond. 12 Represents PO(R f )2 or SO2R f . R f represents a halogen atom, a linear or branched alkyl group having 1 to 12 carbon atoms, a linear or branched alkenyl group having 3 to 12 carbon atoms, or a linear or branched alkynyl group having 2 to 12 carbon atoms, and at least one of an oxygen atom and a nitrogen atom is optionally contained between carbon-carbon bonds in the aforementioned alkyl, alkenyl or alkynyl group. Furthermore, any hydrogen atom of the aforementioned alkyl, alkenyl or alkynyl group is optionally substituted with a fluorine atom. There are multiple R fIn the case of multiple R f Optional same or different. 13 represents a halogen atom or a linear or branched alkyl group having 1 to 12 carbon atoms, wherein an oxygen atom may be contained between carbon-carbon bonds in the alkyl group. Furthermore, any hydrogen atom in the alkyl group may be substituted with a fluorine atom. 3 is an integer from 0 to 3, R 14 , R 15 and R 16 Each independently represents a hydrogen atom or a linear or branched alkyl group having 1 to 12 carbon atoms, wherein an oxygen atom may be contained between carbon-carbon bonds in the alkyl group. Furthermore, any hydrogen atom in the alkyl group may be substituted with a fluorine atom. 16 In the case of multiple R 16 It should be noted that n 3 When R is 0, 16 Does not exist, R 15 The carbon atom bonded to Y 5 Direct bonding.]

[0028]

[0029] [In the general formula (4-1), X 2 and X 3 Each independently represents CH2, NH, O or S. Y 6 Represents CH or N. Z 5 Indicates CH2, O or NR 23 . R 23 represents a hydrogen atom, an alkali metal cation, or a linear or branched alkyl group having 1 to 12 carbon atoms, wherein an oxygen atom may be contained between carbon-carbon bonds in the alkyl group. In addition, any hydrogen atom in the alkyl group may be substituted with a fluorine atom. 23 In the case of an alkali metal cation, the nitrogen atom is 23 The bond represents an ionic bond.

[0030] R 18 Represents PO(R f )2 or SO2R f . R frepresents a halogen atom, a linear or branched alkyl group having 1 to 12 carbon atoms, a linear or branched alkenyl group having 3 to 12 carbon atoms, or a linear or branched alkynyl group having 2 to 12 carbon atoms, and at least one of an oxygen atom and a nitrogen atom is optionally contained between carbon-carbon bonds in the aforementioned alkyl, alkenyl or alkynyl group. Furthermore, any hydrogen atom of the aforementioned alkyl, alkenyl or alkynyl group is optionally substituted with a fluorine atom. There are multiple R f In the case of multiple R f Optional: same or different.]

[0031]

[0032] [In the general formula (4-2), X 2 and X 3 Each independently represents CH2, NH, O or S. Y 6 Represents CH or N. Z 5 Indicates CH2, O or NR 23 . R 23 represents a hydrogen atom, an alkali metal cation, or a linear or branched alkyl group having 1 to 12 carbon atoms, wherein an oxygen atom may be contained between carbon-carbon bonds in the alkyl group. In addition, any hydrogen atom in the alkyl group may be substituted with a fluorine atom. 23 In the case of an alkali metal cation, the nitrogen atom is 23 The bond represents an ionic bond.

[0033] R 18 Represents PO(R f )2 or SO2R f . R f represents a halogen atom, a linear or branched alkyl group having 1 to 12 carbon atoms, a linear or branched alkenyl group having 3 to 12 carbon atoms, or a linear or branched alkynyl group having 2 to 12 carbon atoms, and at least one of an oxygen atom and a nitrogen atom is optionally contained between carbon-carbon bonds in the alkyl group, alkenyl group, or alkynyl group. In addition, any hydrogen atom in the alkyl group, alkenyl group, or alkynyl group is optionally substituted with a fluorine atom, and there are multiple R f In the case of multiple R f Optional same or different.

[0034] R 19 represents a halogen atom, a hydrogen atom, or a linear or branched alkyl group having 1 to 12 carbon atoms, wherein an oxygen atom may be contained between carbon-carbon bonds in the alkyl group. Furthermore, any hydrogen atom in the alkyl group may be substituted with a fluorine atom.]

[0035]

[0036] [In the general formula (4-3), X 2 and X 3 Each independently represents CH2, NH, O or S. Y 6 Represents CH or N. Z 5 Indicates CH2, O or NR 23 . R 23 represents a hydrogen atom, an alkali metal cation, or a linear or branched alkyl group having 1 to 12 carbon atoms, wherein an oxygen atom may be contained between carbon-carbon bonds in the alkyl group. In addition, any hydrogen atom in the alkyl group may be substituted with a fluorine atom. 23 In the case of an alkali metal cation, the nitrogen atom is 23 The bond represents an ionic bond.

[0037] R 18 Represents PO(R f )2 or SO2R f . R f represents a halogen atom, a linear or branched alkyl group having 1 to 12 carbon atoms, a linear or branched alkenyl group having 3 to 12 carbon atoms, or a linear or branched alkynyl group having 2 to 12 carbon atoms, and at least one of an oxygen atom and a nitrogen atom is optionally contained between carbon-carbon bonds in the aforementioned alkyl, alkenyl or alkynyl group. Furthermore, any hydrogen atom of the aforementioned alkyl, alkenyl or alkynyl group is optionally substituted with a fluorine atom. There are multiple R f In the case of multiple R f Optional same or different.

[0038] n 4 is 0 or 1, R 20 , R 21 and R 22 Each independently represents a halogen atom, a hydrogen atom, or a linear or branched alkyl group having 1 to 12 carbon atoms, wherein an oxygen atom may be contained between carbon-carbon bonds in the alkyl group. In addition, any hydrogen atom in the alkyl group may be substituted with a fluorine atom. 4 When R is 0, 21 Does not exist, R 20 The carbon atom bonded to R 22 The bonded carbon atoms are directly bonded.]

[0039]

[0040] [In general formula (5), X 4 represents CH2, NH, O or S. Y7 Represents CH or N. Z 6 Indicates CH2, O or NR 27 . R 27 represents a hydrogen atom, an alkali metal cation, or a linear or branched alkyl group having 1 to 12 carbon atoms, wherein an oxygen atom may be contained between carbon-carbon bonds in the alkyl group. In addition, any hydrogen atom in the alkyl group may be substituted with a fluorine atom. 27 In the case of an alkali metal cation, the nitrogen atom is 27 The bond represents an ionic bond.

[0041] R 24 Represents PO(R f )2 or SO2R f . R f represents a halogen atom, a linear or branched alkyl group having 1 to 12 carbon atoms, a linear or branched alkenyl group having 3 to 12 carbon atoms, or a linear or branched alkynyl group having 2 to 12 carbon atoms, and at least one of an oxygen atom and a nitrogen atom is optionally contained between carbon-carbon bonds in the aforementioned alkyl, alkenyl or alkynyl group. Furthermore, any hydrogen atom of the aforementioned alkyl, alkenyl or alkynyl group is optionally substituted with a fluorine atom. There are multiple R f In the case of multiple R f Optional same or different,

[0042] R 25 and R 26 Each independently represents a halogen atom, a hydrogen atom, a nitro group, or a linear or branched alkyl group having 1 to 12 carbon atoms, wherein an oxygen atom may be contained between carbon-carbon bonds in the aforementioned alkyl group. Furthermore, any hydrogen atom in the aforementioned alkyl group may be substituted with a fluorine atom.]

[0043]

[0044] [In general formula (6), R 28 represents a halogen atom or a linear or branched alkyl group having 1 to 12 carbon atoms, wherein an oxygen atom may be contained between carbon-carbon bonds in the alkyl group, and any hydrogen atom in the alkyl group may be substituted with a fluorine atom.

[0045] R 29 and R 31 Each independently represents a halogen atom, a hydrogen atom, or a linear or branched alkyl group having 1 to 12 carbon atoms, wherein an oxygen atom may be contained between carbon-carbon bonds in the alkyl group, and any hydrogen atom in the alkyl group may be substituted with a fluorine atom.

[0046] R 30 and R 32 Each independently represents a hydrogen atom, a straight-chain alkyl group having 1 to 12 carbon atoms or a branched-chain alkyl group having 3 to 12 carbon atoms, a straight-chain alkenyl group having 2 to 12 carbon atoms or a branched-chain alkynyl group having 4 to 12 carbon atoms, and at least one of an oxygen atom and a nitrogen atom may be contained between carbon-carbon atom bonds in the aforementioned alkyl, alkenyl or alkynyl group. Furthermore, the aforementioned alkyl, alkenyl or alkynyl group may contain a carbon-nitrogen unsaturated bond, and any hydrogen atom in the aforementioned alkyl, alkenyl or alkynyl group may be substituted with a fluorine atom.] [2]

[0048] A non-aqueous electrolyte according to [1], wherein the aforementioned (I) is at least one selected from the group consisting of a compound represented by the aforementioned general formula (2), a compound represented by the aforementioned general formula (3), a compound represented by the aforementioned general formula (4-1), a compound represented by the aforementioned general formula (4-2) and a compound represented by the aforementioned general formula (5). [3]

[0050] The nonaqueous electrolyte according to [1], wherein R in the general formula (1) 1 Indicates POF2 or SO2F. [4]

[0052] The nonaqueous electrolyte according to [1] or [2], wherein R in the general formula (2) 6 and R 7 Each independently represents POF2 or SO2F. [5]

[0054] The nonaqueous electrolyte according to [1] or [2], wherein R in the general formula (3) 12 Indicates POF2 or SO2F. [6]

[0056] The nonaqueous electrolyte according to [1] or [2], wherein R in the general formula (4-1), (4-2), or (4-3) 18 Indicates POF2 or SO2F. [7]

[0058] The nonaqueous electrolyte according to [1] or [2], wherein R in the general formula (5) 24 Indicates POF2 or SO2F. [8]

[0060] The nonaqueous electrolyte according to [1], wherein R in the general formula (6) 28 A fluorine atom. [9]

[0062] The nonaqueous electrolyte according to [1] or [3], wherein R in the general formula (1) 5 It represents a hydrogen atom, a lithium ion, a sodium ion, or a linear or branched alkyl group having 1 to 4 carbon atoms.

[10]

[0064] The nonaqueous electrolyte according to any one of [1], [2] and [4], wherein R in the general formula (2) 11 It represents a hydrogen atom, a lithium ion, a sodium ion, or a linear or branched alkyl group having 1 to 4 carbon atoms.

[11]

[0066] The nonaqueous electrolyte according to any one of [1], [2] and [5], wherein R in the general formula (3) 17 It represents a hydrogen atom, a lithium ion, a sodium ion, or a linear or branched alkyl group having 1 to 4 carbon atoms.

[12]

[0068] The nonaqueous electrolyte according to any one of [1], [2] and [6], wherein R in the general formula (4-1), (4-2) or (4-3) is 23 It represents a hydrogen atom, a lithium ion, a sodium ion, or a linear or branched alkyl group having 1 to 4 carbon atoms.

[13]

[0070] The nonaqueous electrolyte according to any one of [1], [2] and [7], wherein R in the general formula (5) 27 It represents a hydrogen atom, a lithium ion, a sodium ion, or a linear or branched alkyl group having 1 to 4 carbon atoms.

[14]

[0072] A non-aqueous electrolyte according to any one of [1] to

[13] , wherein the solute is at least one selected from the group consisting of LiPF6, LiBF4, LiSbF6, LiAsF6, LiClO4, LiCF3SO3, LiC4F9SO3, LiN(SO2F)2, LiAlO2, LiAlCl4, LiCl and LiI, or at least one selected from the group consisting of NaPF6, NaBF4, NaSbF6, NaAsF6, NaClO4, NaCF3SO3, NaC4F9SO3, NaN(SO2F)2, NaAlO2, NaAlCl4, NaCl and NaI.

[15]

[0074] The nonaqueous electrolyte solution according to any one of [1] to

[14] , wherein the nonaqueous organic solvent contains at least one selected from the group consisting of cyclic esters, chain esters, cyclic ethers, chain ethers, sulfone compounds, sulfoxide compounds, and ionic liquids.

[16]

[0076] The nonaqueous electrolyte solution according to

[15] , wherein the cyclic ester is a cyclic carbonate.

[17]

[0078] The non-aqueous electrolyte solution according to

[16] , wherein the cyclic carbonate is at least one selected from the group consisting of ethylene carbonate, propylene carbonate and fluoroethylene carbonate.

[18]

[0080] The non-aqueous electrolyte according to

[15] , wherein the chain ester is a chain carbonate.

[19]

[0082] The non-aqueous electrolyte according to

[18] , wherein the chain carbonate is at least one selected from the group consisting of ethyl methyl carbonate, dimethyl carbonate, diethyl carbonate and methylpropyl carbonate.

[20]

[0084] The non-aqueous electrolyte solution according to any one of [1] to

[19] , wherein the content of (I) is 0.01 to 10.0% by mass based on the total amount of the non-aqueous electrolyte solution. [twenty one]

[0086] The non-aqueous electrolyte according to any one of [1] to

[20] , further comprising a group selected from vinylene carbonate, bis(oxalato)borate, difluorooxalatoborate, difluorobis(oxalato)phosphate, tetrafluorooxalatophosphate, tetrafluoro(malonate)phosphate, (difluorophosphoryl)(fluorosulfonyl)imide salt, difluorophosphate, fluorosulfonate, 1,3-propylene sultone, 1,3-propane sultone, 1,6-diisocyanatohexane, ethynyl ethylene carbonate, At least one selected from the group consisting of 1,3,2-dioxathiolane-2,2-dioxide, 4-propyl-1,3,2-dioxathiolane-2,2-dioxide, methylene disulfonate, 1,2-ethanedisulfonic anhydride, methylsulfonyl fluoride, tris(trimethylsilyl)borate, (ethoxy)pentafluorocyclotriphosphazene, tetrafluoro(picolinic acid)phosphate, 1,3-dimethyl-1,3-divinyl-1,3-bis(1,1,1,3,3,3-hexafluoroisopropyl)disiloxane, tert-butylbenzene, tert-amylbenzene, fluorobenzene and cyclohexylbenzene. [twenty two]

[0088] A non-aqueous electrolyte battery comprising at least a positive electrode, a negative electrode, a separator, and the non-aqueous electrolyte described in any one of [1] to

[21] . [twenty three]

[0090] A compound represented by the following general formula (1).

[0091]

[0092] [In the general formula (1), X 1 represents CH2, NH, O, S or SO2. 1 Represents CH or N. Z 1 Indicates CH2, O or NR 5 . R 5 represents a hydrogen atom, an alkali metal cation, or a linear or branched alkyl group having 1 to 12 carbon atoms, wherein an oxygen atom may be contained between carbon-carbon bonds in the alkyl group. In addition, any hydrogen atom in the alkyl group may be substituted with a fluorine atom. 5 In the case of an alkali metal cation, the nitrogen atom is 5 The bond represents an ionic bond.

[0093] R 1 Indicates POF2 or SO2F.

[0094] n 1 is an integer from 1 to 3, R 2 , R 3 and R 4 Each independently represents a hydrogen atom or a linear or branched alkyl group having 1 to 12 carbon atoms, wherein an oxygen atom may be contained between carbon-carbon bonds in the alkyl group. Furthermore, any hydrogen atom in the alkyl group may be substituted with a fluorine atom. 4 In the case of multiple R 4 Optional: same or different.] [twenty four]

[0096] A compound represented by the following general formula (2).

[0097]

[0098] [In the general formula (2), Y 2 and Y 3 Each independently represents CH or N. Z 2 and Z 3 Each independently represents CH2, O or NR 11 . R 11represents a hydrogen atom, an alkali metal cation, or a linear or branched alkyl group having 1 to 12 carbon atoms, wherein an oxygen atom may be contained between carbon-carbon bonds in the alkyl group. In addition, any hydrogen atom in the alkyl group may be substituted with a fluorine atom. 11 In the case of an alkali metal cation, the nitrogen atom is 11 The bond represents an ionic bond.

[0099] R 6 and R 7 Each independently represents POF2 or SO2F.

[0100] n 2 is an integer from 1 to 3, R 8 , R 9 and R 10 Each independently represents a hydrogen atom or a linear or branched alkyl group having 1 to 12 carbon atoms, wherein an oxygen atom may be contained between carbon-carbon bonds in the alkyl group. Furthermore, any hydrogen atom in the alkyl group may be substituted with a fluorine atom. 10 In the case of multiple R 10 Optional: same or different.]

[25]

[0102] A compound represented by the following general formula (3).

[0103]

[0104] [In the general formula (3), Y 4 and Y 5 Each independently represents CH or N. Z 4 Indicates CH2, O or NR 17 . R 17 represents a hydrogen atom, an alkali metal cation, or a linear or branched alkyl group having 1 to 12 carbon atoms, wherein an oxygen atom may be contained between carbon-carbon bonds in the alkyl group. In addition, any hydrogen atom in the alkyl group may be substituted with a fluorine atom. 17 In the case of an alkali metal cation, the nitrogen atom is 17 The bond represents an ionic bond.

[0105] R 12 Indicates POF2 or SO2F.

[0106] R 13 represents a halogen atom or a linear or branched alkyl group having 1 to 12 carbon atoms, wherein an oxygen atom may be contained between carbon-carbon bonds in the alkyl group, and any hydrogen atom in the alkyl group may be substituted with a fluorine atom.

[0107] n 3 is an integer from 0 to 3, R 14 , R 15 and R 16 Each independently represents a hydrogen atom or a linear or branched alkyl group having 1 to 12 carbon atoms, wherein an oxygen atom may be contained between carbon-carbon bonds in the alkyl group. Furthermore, any hydrogen atom in the alkyl group may be substituted with a fluorine atom. 16 In the case of multiple R 16 It should be noted that n 3 When R is 0, 16 Does not exist, R 15 The carbon atom bonded to Y 5 Direct bonding.]

[26]

[0109] A compound represented by the following general formula (4-1), the following general formula (4-2) or the following general formula (4-3).

[0110]

[0111] [In the general formula (4-1), X 2 and X 3 Each independently represents CH2, NH, O or S. Y 6 Represents CH or N. Z 5 Indicates CH2, O or NR 23 . R 23 represents a hydrogen atom, an alkali metal cation, or a linear or branched alkyl group having 1 to 12 carbon atoms, wherein an oxygen atom may be contained between carbon-carbon bonds in the alkyl group. In addition, any hydrogen atom in the alkyl group may be substituted with a fluorine atom. 23 In the case of an alkali metal cation, the nitrogen atom is 23 The bond represents an ionic bond.

[0112] R 18 Indicates POF2 or SO2F.]

[0113]

[0114] [In the general formula (4-2), X 2 and X 3 Each independently represents CH2, NH, O or S. Y 6 Represents CH or N. Z 5 Indicates CH2, O or NR 23 . R 23represents a hydrogen atom, an alkali metal cation, or a linear or branched alkyl group having 1 to 12 carbon atoms, wherein an oxygen atom may be contained between carbon-carbon bonds in the alkyl group. In addition, any hydrogen atom in the alkyl group may be substituted with a fluorine atom. 23 In the case of an alkali metal cation, the nitrogen atom is 23 The bond represents an ionic bond.

[0115] R 18 Indicates POF2 or SO2F.

[0116] R 19 represents a halogen atom, a hydrogen atom, or a linear or branched alkyl group having 1 to 12 carbon atoms, wherein an oxygen atom may be contained between carbon-carbon bonds in the alkyl group. Furthermore, any hydrogen atom in the alkyl group may be substituted with a fluorine atom.]

[0117]

[0118] [In the general formula (4-3), X 2 and X 3 Each independently represents CH2, NH, O or S. Y 6 Represents CH or N. Z 5 Indicates CH2, O or NR 23 . R 23 represents a hydrogen atom, an alkali metal cation, or a linear or branched alkyl group having 1 to 12 carbon atoms, wherein an oxygen atom may be contained between carbon-carbon bonds in the alkyl group. In addition, any hydrogen atom in the alkyl group may be substituted with a fluorine atom. 23 In the case of an alkali metal cation, the nitrogen atom is 23 The bond represents an ionic bond.

[0119] R 18 Indicates POF2 or SO2F.

[0120] n 4 is 0 or 1, R 20 , R 21 and R 22 Each independently represents a halogen atom, a hydrogen atom, or a linear or branched alkyl group having 1 to 12 carbon atoms, wherein an oxygen atom may be contained between carbon-carbon bonds in the alkyl group. In addition, any hydrogen atom in the alkyl group may be substituted with a fluorine atom. 4 When R is 0, 21 Does not exist, R 20 The carbon atom bonded to R 22 The bonded carbon atoms are directly bonded.]

[27]

[0122] A compound represented by the following general formula (5).

[0123]

[0124] [In general formula (5), X 4 represents CH2, NH or O. 7 Represents CH or N. Z 6 Indicates CH2, O or R 27 . R 27 represents a hydrogen atom, an alkali metal cation, or a linear or branched alkyl group having 1 to 12 carbon atoms, wherein an oxygen atom may be contained between carbon-carbon bonds in the alkyl group. In addition, any hydrogen atom in the alkyl group may be substituted with a fluorine atom. 27 In the case of an alkali metal cation, the nitrogen atom is 27 The bond represents an ionic bond.

[0125] R 24 Indicates POF2 or SO2F.

[0126] R 25 and R 26 Each independently represents a halogen atom, a hydrogen atom, a nitro group, or a linear or branched alkyl group having 1 to 12 carbon atoms, wherein an oxygen atom may be contained between carbon-carbon bonds in the aforementioned alkyl group. Furthermore, any hydrogen atom in the aforementioned alkyl group may be substituted with a fluorine atom.]

[28]

[0128] A compound represented by the following general formula (6).

[0129]

[0130] [In general formula (6), R 28 represents a fluorine atom.

[0131] R 29 and R 31 Each independently represents a halogen atom, a hydrogen atom, or a linear or branched alkyl group having 1 to 12 carbon atoms, wherein an oxygen atom may be contained between carbon-carbon bonds in the alkyl group, and any hydrogen atom in the alkyl group may be substituted with a fluorine atom.

[0132] R 30 and R 32Each independently represents a hydrogen atom, a straight-chain alkyl group having 1 to 12 carbon atoms or a branched-chain alkyl group having 3 to 12 carbon atoms, a straight-chain alkenyl group having 2 to 12 carbon atoms or a branched-chain alkynyl group having 4 to 12 carbon atoms, and at least one of an oxygen atom and a nitrogen atom may be contained between carbon-carbon atom bonds in the aforementioned alkyl, alkenyl or alkynyl group. Furthermore, the aforementioned alkyl, alkenyl or alkynyl group may contain a carbon-nitrogen unsaturated bond, and any hydrogen atom in the aforementioned alkyl, alkenyl or alkynyl group may be substituted with a fluorine atom.]

[0133] Effects of the Invention

[0134] According to the present disclosure, a nonaqueous electrolyte and a nonaqueous electrolyte battery capable of reducing initial resistance can be provided. In addition, a compound that can be suitably used in the nonaqueous electrolyte can be provided. DETAILED DESCRIPTION

[0135] Each configuration and combination thereof in the following embodiments are examples, and addition, substitution, and other changes of the configuration may be made within the scope not departing from the gist of the present disclosure. In addition, the present disclosure is not limited to the embodiments but is limited only by the claims.

[0136] In this specification, "to" is used to mean that the numerical values ​​described before and after it are included as a lower limit and an upper limit.

[0137] It should be noted that in this specification, the initial resistance value refers to the resistance value of the non-aqueous electrolyte battery immediately after the initial charge and discharge operation for battery stabilization. Specifically, it refers to the initial resistance value obtained by impedance measurement after three cycles of charge and discharge operation for battery stabilization.

[0138] 〔1. Non-aqueous electrolyte〕

[0139] The non-aqueous electrolyte disclosed herein is a non-aqueous electrolyte containing (I) at least one selected from the group consisting of a compound represented by general formula (1), a compound represented by general formula (2), a compound represented by general formula (3), a compound represented by general formula (4-1), a compound represented by general formula (4-2), a compound represented by general formula (4-3), a compound represented by general formula (5) and a compound represented by general formula (6); (II) a solute; and (III) a non-aqueous organic solvent.

[0140] <About ingredient (I)>

[0141] The non-aqueous electrolyte disclosed herein comprises: as component (I), at least one selected from the group consisting of a compound represented by general formula (1), a compound represented by general formula (2), a compound represented by general formula (3), a compound represented by general formula (4-1), a compound represented by general formula (4-2), a compound represented by general formula (4-3), a compound represented by general formula (5) and a compound represented by general formula (6).

[0142] If a non-aqueous electrolyte battery (such as a lithium ion secondary battery, a sodium ion secondary battery) contains the above-mentioned component (I), the component (I) is decomposed at least in the positive electrode and in any of the negative electrodes, and a coating with good cation conductivity is formed on at least any surface of the positive electrode and the negative electrode. It is believed that the coating inhibits direct contact between the non-aqueous organic solvent, the solute and the electrode active material, and reduces the cation dissociation energy of the solute. The inventors of the present invention presume that the result has the effect of reducing the initial resistance of the non-aqueous electrolyte battery.

[0143] The above-mentioned component (I) may be at least one selected from the group consisting of a compound represented by general formula (2), a compound represented by general formula (3), a compound represented by general formula (4-1), a compound represented by general formula (4-2), and a compound represented by general formula (5).

[0144] Hereinafter, the compound represented by the general formula (1) will be described.

[0145]

[0146] X 1 represents CH2, NH, O, S or SO2. 1 Represents CH or N. Z 1 Indicates CH2, O or NR 5 .

[0147] X 1 It can be CH2 or O.

[0148] Y 1 Can be N.

[0149] Z 1 Can be NR 5 .

[0150] R 5 represents a hydrogen atom, an alkali metal cation, or a linear or branched alkyl group having 1 to 12 carbon atoms, wherein an oxygen atom may be contained between carbon-carbon bonds in the alkyl group. In addition, any hydrogen atom in the alkyl group may be substituted with a fluorine atom. 5 In the case of an alkali metal cation, the nitrogen atom is 5 The bond represents an ionic bond.

[0151] R 5 It can be a hydrogen atom, an alkali metal cation, or a straight-chain alkyl group having 1 to 4 carbon atoms or a branched-chain alkyl group having 3 to 4 carbon atoms; it can be a hydrogen atom, a lithium ion, a sodium ion, or a straight-chain alkyl group having 1 to 4 carbon atoms or a branched-chain alkyl group having 3 to 4 carbon atoms; it can be a hydrogen atom, a lithium ion, a sodium ion, or a methyl group.

[0152] R 1 Represents PO(R f )2 or SO2R f .

[0153] R f represents a halogen atom, a linear or branched alkyl group having 1 to 12 carbon atoms, a linear or branched alkenyl group having 3 to 12 carbon atoms, or a linear or branched alkynyl group having 2 to 12 carbon atoms, and at least one of an oxygen atom and a nitrogen atom is optionally contained between carbon-carbon bonds in the aforementioned alkyl, alkenyl or alkynyl group. In addition, any hydrogen atom of the aforementioned alkyl, alkenyl or alkynyl group is optionally substituted with a fluorine atom. There are multiple R f In the case of multiple R f Optional same or different.

[0154] As R f Specific examples of the alkyl group representing a linear or branched alkyl group having 1 to 12 carbon atoms include methyl, ethyl, n-propyl, isopropyl, n-butyl, sec-butyl, isobutyl, tert-butyl, and n-pentyl.

[0155] As R f Specific examples of the alkenyl group representing a linear or branched alkenyl group having 2 to 12 carbon atoms include vinyl, allyl, 1-propenyl, isopropenyl, 2-butenyl, and 1,3-butadienyl.

[0156] As R f Specific examples of the alkynyl group representing a linear chain having 2 to 12 carbon atoms or a branched chain having 4 to 12 carbon atoms include ethynyl, 2-propynyl, 1,1-dimethyl-2-propynyl and the like.

[0157] At least one of an oxygen atom and a nitrogen atom may be contained between carbon-carbon bonds in the alkyl, alkenyl or alkynyl groups, for example, 2-methoxyethyl, 2-ethoxyethyl, (allyloxy)methyl, (propargyloxy)methyl, (dimethylamino)ethyl, (diethylamino)ethyl, etc.

[0158] Any hydrogen atom of the above-mentioned alkyl, alkenyl or alkynyl group may be substituted with a fluorine atom. Examples thereof include trifluoromethyl, difluoromethyl, fluoromethyl, 2,2,2-trifluoroethyl, 2,2-difluoroethyl, 2-fluoroethyl, 3-fluoropropyl, 3,3,3-trifluoropropyl, 2,2,3,3,3-pentafluoropropyl, 2,2,3,3-tetrafluoropropyl, hexafluoroisopropyl, 1,1-bis(trifluoromethyl)-2-propenyl, and 3,3,3-trifluoropropynyl.

[0159] R 1 It can be POF2 or SO2F, it can be SO2F.

[0160] R 2 ~R 4 Each independently represents a hydrogen atom or a linear or branched alkyl group having 1 to 12 carbon atoms. Specific examples of the alkyl group include methyl, ethyl, n-propyl, isopropyl, n-butyl, sec-butyl, isobutyl, tert-butyl, and n-pentyl.

[0161] The above alkyl group may contain an oxygen atom between carbon atom bonds, and examples thereof include 2-methoxyethyl and 2-ethoxyethyl.

[0162] In addition, any hydrogen atom of the above alkyl group may be substituted with a fluorine atom, and examples thereof include trifluoromethyl, difluoromethyl, fluoromethyl, 2,2,2-trifluoroethyl, 2,2-difluoroethyl, 2-fluoroethyl, 3-fluoropropyl, 3,3,3-trifluoropropyl, 2,2,3,3,3-pentafluoropropyl, 2,2,3,3-tetrafluoropropyl, and hexafluoroisopropyl.

[0163] The alkyl group may have a carbon number of 6 or less, thereby reducing the resistance of the film formed on the electrode. The alkyl group may have a carbon number of 4 or less, and may be a methyl group, an ethyl group, an n-propyl group, an isopropyl group, an n-butyl group, or a tert-butyl group.

[0164] R 2 ~R 4 Each independently may be a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, may be a hydrogen atom or a methyl group, or may be a hydrogen atom.

[0165] n 1 is an integer from 1 to 3, n 1 Can be 1 or 2, n 1 Can be 1.

[0166] Specifically, the compound represented by general formula (1) may be at least one selected from the group consisting of compounds represented by the following formulae (1-1-a) to (1-1-z), (1-2-a) to (1-2-z), and (1-3-a) to (1-3-z).

[0167] More preferably, it is at least one selected from the group consisting of a compound represented by formula (1-1-a) (also referred to as compound (1-1-a), a compound represented by formula (1-1-g) (also referred to as compound (1-1-g), a compound represented by formula (1-1-q) (also referred to as compound (1-1-q), a compound represented by formula (1-1-x) (also referred to as compound (1-1-x), a compound represented by formula (1-2-g) (also referred to as compound (1-2-g), a compound represented by formula (1-2-q) (also referred to as compound (1-2-q), a compound represented by formula (1-2-x) (also referred to as compound (1-2-x), a compound represented by formula (1-3-a) (also referred to as compound (1-3-a), a compound represented by formula (1-3-g) (also referred to as compound (1-3-g), and a compound represented by formula (1-3-x) (also referred to as compound (1-3-x).

[0168] More preferably, it is at least one selected from the group consisting of compound (1-1-a), compound (1-1-g), compound (1-1-q), compound (1-1-x) and compound (1-2-g).

[0169] Compound (1-1-g) is particularly preferred.

[0170]

[0171]

[0172]

[0173]

[0174] Hereinafter, the compound represented by the general formula (2) will be described.

[0175]

[0176] Y 2 and Y 3 Each independently represents CH or N. Z 2 and Z 3 Each independently represents CH2, O or NR 11 .

[0177] Y 2 and Y 3 Both can be N.

[0178] Z 2 and Z 3 Can be NR 11 .

[0179] R 11 represents a hydrogen atom, an alkali metal cation, or a linear or branched alkyl group having 1 to 12 carbon atoms, wherein an oxygen atom may be contained between carbon-carbon bonds in the alkyl group. In addition, any hydrogen atom in the alkyl group may be substituted with a fluorine atom. 11 In the case of an alkali metal cation, the nitrogen atom is 11 The bond represents an ionic bond.

[0180] R 11 It can be a hydrogen atom, an alkali metal cation, or a straight-chain alkyl group having 1 to 4 carbon atoms or a branched-chain alkyl group having 3 to 4 carbon atoms; it can be a hydrogen atom, a lithium ion, a sodium ion, or a straight-chain alkyl group having 1 to 4 carbon atoms or a branched-chain alkyl group having 3 to 4 carbon atoms; it can be a hydrogen atom, a lithium ion, a sodium ion, or a methyl group.

[0181] R 6 and R 7 Each independently represents PO(R f )2 or SO2R f .

[0182] R f represents a halogen atom, a linear or branched alkyl group having 1 to 12 carbon atoms, a linear or branched alkenyl group having 3 to 12 carbon atoms, or a linear or branched alkynyl group having 2 to 12 carbon atoms, and at least one of an oxygen atom and a nitrogen atom is optionally contained between carbon-carbon bonds in the aforementioned alkyl, alkenyl or alkynyl group. In addition, any hydrogen atom of the aforementioned alkyl, alkenyl or alkynyl group is optionally substituted with a fluorine atom. There are multiple R f In the case of multiple R f Optional same or different.

[0183] As R f Specific examples of the alkyl group representing a linear or branched alkyl group having 1 to 12 carbon atoms include methyl, ethyl, n-propyl, isopropyl, n-butyl, sec-butyl, isobutyl, tert-butyl, and n-pentyl.

[0184] As R f Specific examples of the alkenyl group representing a linear or branched alkenyl group having 2 to 12 carbon atoms include vinyl, allyl, 1-propenyl, isopropenyl, 2-butenyl, and 1,3-butadienyl.

[0185] As R f Specific examples of the alkynyl group representing a linear chain having 2 to 12 carbon atoms or a branched chain having 4 to 12 carbon atoms include ethynyl, 2-propynyl, 1,1-dimethyl-2-propynyl and the like.

[0186] At least one of an oxygen atom and a nitrogen atom may be contained between carbon-carbon bonds in the alkyl, alkenyl or alkynyl groups, for example, 2-methoxyethyl, 2-ethoxyethyl, (allyloxy)methyl, (propargyloxy)methyl, (dimethylamino)ethyl, (diethylamino)ethyl, etc.

[0187] Any hydrogen atom of the above-mentioned alkyl, alkenyl or alkynyl group may be substituted with a fluorine atom. Examples thereof include trifluoromethyl, difluoromethyl, fluoromethyl, 2,2,2-trifluoroethyl, 2,2-difluoroethyl, 2-fluoroethyl, 3-fluoropropyl, 3,3,3-trifluoropropyl, 2,2,3,3,3-pentafluoropropyl, 2,2,3,3-tetrafluoropropyl, hexafluoroisopropyl, 1,1-bis(trifluoromethyl)-2-propenyl, and 3,3,3-trifluoropropynyl.

[0188] R 6 and R 7 Each independently can be POF2 or SO2F, and can be SO2F.

[0189] R 8 ~R 10 Each independently represents a hydrogen atom or a linear or branched alkyl group having 1 to 12 carbon atoms. Specific examples of the alkyl group include methyl, ethyl, n-propyl, isopropyl, n-butyl, sec-butyl, isobutyl, tert-butyl, and n-pentyl.

[0190] The above alkyl group may contain an oxygen atom between carbon atom bonds, and examples thereof include 2-methoxyethyl and 2-ethoxyethyl.

[0191] In addition, any hydrogen atom of the above alkyl group may be substituted with a fluorine atom, and examples thereof include trifluoromethyl, difluoromethyl, fluoromethyl, 2,2,2-trifluoroethyl, 2,2-difluoroethyl, 2-fluoroethyl, 3-fluoropropyl, 3,3,3-trifluoropropyl, 2,2,3,3,3-pentafluoropropyl, 2,2,3,3-tetrafluoropropyl, and hexafluoroisopropyl.

[0192] The alkyl group may have a carbon number of 6 or less, thereby reducing the resistance of the film formed on the electrode. The alkyl group may have a carbon number of 4 or less, and may be a methyl group, an ethyl group, an n-propyl group, an isopropyl group, an n-butyl group, or a tert-butyl group.

[0193] R 8 ~R 10 Each independently may be a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, may be a hydrogen atom or a methyl group, or may be a hydrogen atom.

[0194] n 2 is an integer from 1 to 3, n2 Can be 1 or 2, n 2 Can be 1.

[0195] Specifically, the compound represented by general formula (2) may be at least one selected from the group consisting of compounds represented by the following formulae (2-1-a) to (2-1-r), (2-2-a) to (2-2-r), and (2-3-a) to (2-3-r).

[0196] More preferably, it is at least one selected from the group consisting of a compound represented by formula (2-1-a) (also referred to as compound (2-1-a)), a compound represented by formula (2-1-d) (also referred to as compound (2-1-d)), a compound represented by formula (2-1-i) (also referred to as compound (2-1-i)), a compound represented by formula (2-1-k) (also referred to as compound (2-1-k)), a compound represented by formula (2-1-l) (also referred to as compound (2-1-l) and a compound represented by formula (2-2-a) (also referred to as compound (2-2-a).

[0197] More preferably, it is at least one selected from the group consisting of compound (2-1-a), compound (2-1-d), compound (2-1-i), and compound (2-2-a).

[0198] Particularly preferred is at least one selected from the group consisting of compound (2-1-a), compound (2-1-d) and compound (2-1-i).

[0199]

[0200]

[0201]

[0202] Hereinafter, the compound represented by the general formula (3) will be described.

[0203]

[0204] Y 4 and Y 5 Each independently represents CH or N. Z 4 Indicates CH2, O or NR 17 .

[0205] Y 4 and Y 5 Both can be N.

[0206] Z 4 Can be NR 17 .

[0207] R 17 represents a hydrogen atom, an alkali metal cation, or a linear or branched alkyl group having 1 to 12 carbon atoms, wherein an oxygen atom may be contained between carbon-carbon bonds in the alkyl group. In addition, any hydrogen atom in the alkyl group may be substituted with a fluorine atom. 17 In the case of an alkali metal cation, the nitrogen atom is 17 The bond represents an ionic bond.

[0208] R 17 It can be a hydrogen atom, an alkali metal cation, or a straight-chain alkyl group having 1 to 4 carbon atoms or a branched-chain alkyl group having 3 to 4 carbon atoms; it can be a hydrogen atom, a lithium ion, a sodium ion, or a straight-chain alkyl group having 1 to 4 carbon atoms or a branched-chain alkyl group having 3 to 4 carbon atoms; it can be a hydrogen atom, a lithium ion, a sodium ion, or a methyl group.

[0209] R 12 Represents PO(R f )2 or SO2R f .

[0210] R f represents a halogen atom, a linear or branched alkyl group having 1 to 12 carbon atoms, a linear or branched alkenyl group having 3 to 12 carbon atoms, or a linear or branched alkynyl group having 2 to 12 carbon atoms, and at least one of an oxygen atom and a nitrogen atom is optionally contained between carbon-carbon bonds in the aforementioned alkyl, alkenyl or alkynyl group. In addition, any hydrogen atom of the aforementioned alkyl, alkenyl or alkynyl group is optionally substituted with a fluorine atom. There are multiple R f In the case of multiple R f Optional same or different.

[0211] As R f Specific examples of the alkyl group representing a linear or branched alkyl group having 1 to 12 carbon atoms include methyl, ethyl, n-propyl, isopropyl, n-butyl, sec-butyl, isobutyl, tert-butyl, and n-pentyl.

[0212] As R f Specific examples of the alkenyl group representing a linear or branched alkenyl group having 2 to 12 carbon atoms include vinyl, allyl, 1-propenyl, isopropenyl, 2-butenyl, and 1,3-butadienyl.

[0213] As R f Specific examples of the alkynyl group representing a linear chain having 2 to 12 carbon atoms or a branched chain having 4 to 12 carbon atoms include ethynyl, 2-propynyl, 1,1-dimethyl-2-propynyl and the like.

[0214] At least one of an oxygen atom and a nitrogen atom may be contained between carbon-carbon bonds in the alkyl, alkenyl or alkynyl groups, for example, 2-methoxyethyl, 2-ethoxyethyl, (allyloxy)methyl, (propargyloxy)methyl, (dimethylamino)ethyl, (diethylamino)ethyl, etc.

[0215] Any hydrogen atom of the above-mentioned alkyl, alkenyl or alkynyl group may be substituted with a fluorine atom. Examples thereof include trifluoromethyl, difluoromethyl, fluoromethyl, 2,2,2-trifluoroethyl, 2,2-difluoroethyl, 2-fluoroethyl, 3-fluoropropyl, 3,3,3-trifluoropropyl, 2,2,3,3,3-pentafluoropropyl, 2,2,3,3-tetrafluoropropyl, hexafluoroisopropyl, 1,1-bis(trifluoromethyl)-2-propenyl, and 3,3,3-trifluoropropynyl.

[0216] R 12 It can be POF2 or SO2F, it can be SO2F.

[0217] R 13 represents a halogen atom or a linear or branched alkyl group having 1 to 12 carbon atoms. Specific examples of the alkyl group include methyl, ethyl, n-propyl, isopropyl, n-butyl, sec-butyl, isobutyl, tert-butyl, and n-pentyl.

[0218] The above alkyl group may contain an oxygen atom between carbon atom bonds, and examples thereof include 2-methoxyethyl and 2-ethoxyethyl.

[0219] In addition, any hydrogen atom of the above alkyl group may be substituted with a fluorine atom, and examples thereof include trifluoromethyl, difluoromethyl, fluoromethyl, 2,2,2-trifluoroethyl, 2,2-difluoroethyl, 2-fluoroethyl, 3-fluoropropyl, 3,3,3-trifluoropropyl, 2,2,3,3,3-pentafluoropropyl, 2,2,3,3-tetrafluoropropyl, and hexafluoroisopropyl.

[0220] The alkyl group may have a carbon number of 6 or less, thereby reducing the resistance of the film formed on the electrode. The alkyl group may have a carbon number of 4 or less, and may be a methyl group, an ethyl group, an n-propyl group, an isopropyl group, an n-butyl group, or a tert-butyl group.

[0221] R 13 It may be a fluorine atom or an alkyl group having 1 to 4 carbon atoms, and may be a fluorine atom or a methyl group.

[0222] R 14 ~R 16Each independently represents a hydrogen atom or a linear or branched alkyl group having 1 to 12 carbon atoms. Specific examples of the alkyl group include methyl, ethyl, n-propyl, isopropyl, n-butyl, sec-butyl, isobutyl, tert-butyl, and n-pentyl.

[0223] The above alkyl group may contain an oxygen atom between carbon atom bonds, and examples thereof include 2-methoxyethyl and 2-ethoxyethyl.

[0224] In addition, any hydrogen atom of the above alkyl group may be substituted with a fluorine atom, and examples thereof include trifluoromethyl, difluoromethyl, fluoromethyl, 2,2,2-trifluoroethyl, 2,2-difluoroethyl, 2-fluoroethyl, 3-fluoropropyl, 3,3,3-trifluoropropyl, 2,2,3,3,3-pentafluoropropyl, 2,2,3,3-tetrafluoropropyl, and hexafluoroisopropyl.

[0225] The alkyl group may have a carbon number of 6 or less, thereby reducing the resistance of the film formed on the electrode. The alkyl group may have a carbon number of 4 or less, and may be a methyl group, an ethyl group, an n-propyl group, an isopropyl group, an n-butyl group, or a tert-butyl group.

[0226] R 14 ~R 16 Each independently may be a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, may be a hydrogen atom or a methyl group, or may be a hydrogen atom.

[0227] n 3 is an integer from 0 to 3, n 3 It can be an integer from 0 to 2, n 3 It can be 0 or 1. It should be noted that n 3 When it is 0, there is no R 16 , R 15 The carbon atom bonded to Y 5 Direct bonding.

[0228] Specifically, the compound represented by general formula (3) can be at least one selected from the group consisting of compounds represented by the following formulae (3-1-a) to (3-1-z), (3-2-a) to (3-2-z), (3-3-a) to (3-3-z) and (3-4-a) to (3-4-z).

[0229] More preferably, it is at least one selected from the group consisting of a compound represented by formula (3-1-a) (also referred to as compound (3-1-a), a compound represented by formula (3-1-e) (also referred to as compound (3-1-e), a compound represented by formula (3-1-q) (also referred to as compound (3-1-q), a compound represented by formula (3-1-y) (also referred to as compound (3-1-y), a compound represented by formula (3-2-e) (also referred to as compound (3-2-e), a compound represented by formula (3-2-q) (also referred to as compound (3-2-q)) and a compound represented by formula (3-2-y) (also referred to as compound (3-2-y).

[0230] More preferably, it is at least one selected from the group consisting of compound (3-1-a), compound (3-1-e), compound (3-1-y), compound (3-2-e) and compound (3-2-y).

[0231] Particularly preferred is at least one selected from the group consisting of compound (3-1-a), compound (3-1-e) and compound (3-2-e).

[0232]

[0233]

[0234]

[0235]

[0236]

[0237] Hereinafter, the compound represented by the general formula (4-1), the compound represented by the general formula (4-2), and the compound represented by the general formula (4-3) will be described.

[0238]

[0239]

[0240] X 2 and X 3 Each independently represents CH2, NH, O or S. Y 6 Represents CH or N. Z 5 Indicates CH2, O or NR 23 .

[0241] X 2 It can be NH or O.

[0242] X 3 It can be CH2 or NH.

[0243] Y 6 Can be N.

[0244] Z 5 Can be NR 23 .

[0245] R 23 represents a hydrogen atom, an alkali metal cation, or a linear or branched alkyl group having 1 to 12 carbon atoms, wherein an oxygen atom may be contained between carbon-carbon bonds in the alkyl group. In addition, any hydrogen atom in the alkyl group may be substituted with a fluorine atom. 23 In the case of an alkali metal cation, the nitrogen atom is 23 The bond represents an ionic bond.

[0246] R 23 It can be a hydrogen atom, an alkali metal cation, or a straight-chain alkyl group having 1 to 4 carbon atoms or a branched-chain alkyl group having 3 to 4 carbon atoms; it can be a hydrogen atom, a lithium ion, a sodium ion, or a straight-chain alkyl group having 1 to 4 carbon atoms or a branched-chain alkyl group having 3 to 4 carbon atoms; it can be a hydrogen atom, a lithium ion, a sodium ion, or a methyl group.

[0247] R 18 Represents PO(R f )2 or SO2R f .

[0248] R f represents a halogen atom, a linear or branched alkyl group having 1 to 12 carbon atoms, a linear or branched alkenyl group having 3 to 12 carbon atoms, or a linear or branched alkynyl group having 2 to 12 carbon atoms, and at least one of an oxygen atom and a nitrogen atom is optionally contained between carbon-carbon bonds in the aforementioned alkyl, alkenyl or alkynyl group. In addition, any hydrogen atom of the aforementioned alkyl, alkenyl or alkynyl group is optionally substituted with a fluorine atom. There are multiple R f In the case of multiple R f Optional same or different.

[0249] As R f Specific examples of the alkyl group representing a linear or branched alkyl group having 1 to 12 carbon atoms include methyl, ethyl, n-propyl, isopropyl, n-butyl, sec-butyl, isobutyl, tert-butyl, and n-pentyl.

[0250] As R f Specific examples of the alkenyl group representing a linear or branched alkenyl group having 2 to 12 carbon atoms include vinyl, allyl, 1-propenyl, isopropenyl, 2-butenyl, and 1,3-butadienyl.

[0251] As R f Specific examples of the alkynyl group representing a linear chain having 2 to 12 carbon atoms or a branched chain having 4 to 12 carbon atoms include ethynyl, 2-propynyl, 1,1-dimethyl-2-propynyl and the like.

[0252] At least one of an oxygen atom and a nitrogen atom may be contained between carbon-carbon bonds in the alkyl, alkenyl or alkynyl groups, for example, 2-methoxyethyl, 2-ethoxyethyl, (allyloxy)methyl, (propargyloxy)methyl, (dimethylamino)ethyl, (diethylamino)ethyl, etc.

[0253] Any hydrogen atom of the above-mentioned alkyl, alkenyl or alkynyl group may be substituted with a fluorine atom. Examples thereof include trifluoromethyl, difluoromethyl, fluoromethyl, 2,2,2-trifluoroethyl, 2,2-difluoroethyl, 2-fluoroethyl, 3-fluoropropyl, 3,3,3-trifluoropropyl, 2,2,3,3,3-pentafluoropropyl, 2,2,3,3-tetrafluoropropyl, hexafluoroisopropyl, 1,1-bis(trifluoromethyl)-2-propenyl, and 3,3,3-trifluoropropynyl.

[0254] R 18 It can be POF2 or SO2F, it can be SO2F.

[0255] R 19 , R 20 , R 21 and R 22 represents a halogen atom, a hydrogen atom, or a linear or branched alkyl group having 1 to 12 carbon atoms. Specific examples of the alkyl group include methyl, ethyl, n-propyl, isopropyl, n-butyl, sec-butyl, isobutyl, tert-butyl, and n-pentyl.

[0256] The above alkyl group may contain an oxygen atom between carbon atom bonds, and examples thereof include 2-methoxyethyl and 2-ethoxyethyl.

[0257] In addition, any hydrogen atom of the above alkyl group may be substituted with a fluorine atom, and examples thereof include trifluoromethyl, difluoromethyl, fluoromethyl, 2,2,2-trifluoroethyl, 2,2-difluoroethyl, 2-fluoroethyl, 3-fluoropropyl, 3,3,3-trifluoropropyl, 2,2,3,3,3-pentafluoropropyl, 2,2,3,3-tetrafluoropropyl, and hexafluoroisopropyl.

[0258] The alkyl group may have a carbon number of 6 or less, thereby reducing the resistance of the film formed on the electrode. The alkyl group may have a carbon number of 4 or less, and may be a methyl group, an ethyl group, an n-propyl group, an isopropyl group, an n-butyl group, or a tert-butyl group.

[0259] R 19 , R20 , R 21 and R 22 It may be a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, it may be a hydrogen atom or a methyl group, it may be a hydrogen atom.

[0260] n 4 is 0 or 1. It should be noted that n 4 When it is 0, there is no R 21 , R 20 The carbon atom bonded to R 22 The bonded carbon atoms are directly bonded.

[0261] Specifically, the compound represented by the general formula (4-1), the general formula (4-2) or the general formula (4-3) can be at least one selected from the group consisting of compounds represented by the following formulas (4-1-a) to (4-1-d'), formulas (4-2-a) to (4-2-d'), formulas (4-3-a) to (4-3-d') and formulas (4-4-a) to (4-4-d').

[0262] More preferably, it is at least one selected from the group consisting of a compound represented by formula (4-1-g) (also referred to as compound (4-1-g)), a compound represented by formula (4-1-j) (also referred to as compound (4-1-j)), a compound represented by formula (4-1-u) (also referred to as compound (4-1-u)), a compound represented by formula (4-1-a') (also referred to as compound (4-1-a')), a compound represented by formula (4-1-b') (also referred to as compound (4-1-b')), a compound represented by formula (4-2-j) (also referred to as compound (4-2-j) and a compound represented by formula (4-2-c') (also referred to as compound (4-2-c').

[0263] More preferably, it is at least one selected from the group consisting of compound (4-1-g), compound (4-1-j), compound (4-1-u) and compound (4-2-j).

[0264] Particularly preferred is at least one selected from the group consisting of compound (4-1-j) and compound (4-2-j).

[0265]

[0266]

[0267]

[0268]

[0269] Hereinafter, the compound represented by the general formula (5) will be described.

[0270]

[0271] X 4 represents CH2, NH, O or S, Y 7 Represents CH or N. Z 6 Indicates CH2, O or NR 27 .

[0272] X 4 It can be NH or O.

[0273] Y 7 Can be N.

[0274] Z 6 Can be NR 27 .

[0275] R 27 represents a hydrogen atom, an alkali metal cation, or a linear or branched alkyl group having 1 to 12 carbon atoms, wherein an oxygen atom may be contained between carbon-carbon bonds in the alkyl group. In addition, any hydrogen atom in the alkyl group may be substituted with a fluorine atom. 27 In the case of an alkali metal cation, the nitrogen atom is 27 The bond represents an ionic bond.

[0276] R 27 It can be a hydrogen atom, an alkali metal cation, or a straight-chain alkyl group having 1 to 4 carbon atoms or a branched-chain alkyl group having 3 to 4 carbon atoms; it can be a hydrogen atom, a lithium ion, a sodium ion, or a straight-chain alkyl group having 1 to 4 carbon atoms or a branched-chain alkyl group having 3 to 4 carbon atoms; it can be a hydrogen atom, a lithium ion, a sodium ion, or a methyl group.

[0277] R 24 Represents PO(R f )2 or SO2R f .

[0278] R f represents a halogen atom, a linear or branched alkyl group having 1 to 12 carbon atoms, a linear or branched alkenyl group having 3 to 12 carbon atoms, or a linear or branched alkynyl group having 2 to 12 carbon atoms, and at least one of an oxygen atom and a nitrogen atom is optionally contained between carbon-carbon bonds in the aforementioned alkyl, alkenyl or alkynyl group. In addition, any hydrogen atom of the aforementioned alkyl, alkenyl or alkynyl group is optionally substituted with a fluorine atom. There are multiple R f In the case of multiple R f Optional same or different.

[0279] As R fSpecific examples of the alkyl group representing a linear or branched alkyl group having 1 to 12 carbon atoms include methyl, ethyl, n-propyl, isopropyl, n-butyl, sec-butyl, isobutyl, tert-butyl, and n-pentyl.

[0280] As R f Specific examples of the alkenyl group representing a linear or branched alkenyl group having 2 to 12 carbon atoms include vinyl, allyl, 1-propenyl, isopropenyl, 2-butenyl, and 1,3-butadienyl.

[0281] As R f Specific examples of the alkynyl group representing a linear chain having 2 to 12 carbon atoms or a branched chain having 4 to 12 carbon atoms include ethynyl, 2-propynyl, 1,1-dimethyl-2-propynyl and the like.

[0282] At least one of an oxygen atom and a nitrogen atom may be contained between carbon-carbon bonds in the alkyl, alkenyl or alkynyl groups, for example, 2-methoxyethyl, 2-ethoxyethyl, (allyloxy)methyl, (propargyloxy)methyl, (dimethylamino)ethyl, (diethylamino)ethyl, etc.

[0283] Any hydrogen atom of the above-mentioned alkyl, alkenyl or alkynyl group may be substituted with a fluorine atom. Examples thereof include trifluoromethyl, difluoromethyl, fluoromethyl, 2,2,2-trifluoroethyl, 2,2-difluoroethyl, 2-fluoroethyl, 3-fluoropropyl, 3,3,3-trifluoropropyl, 2,2,3,3,3-pentafluoropropyl, 2,2,3,3-tetrafluoropropyl, hexafluoroisopropyl, 1,1-bis(trifluoromethyl)-2-propenyl, and 3,3,3-trifluoropropynyl.

[0284] R 24 It can be POF2 or SO2F, it can be SO2F.

[0285] R 25 and R 26 Each independently represents a halogen atom, a hydrogen atom, a nitro group, or a linear or branched alkyl group having 1 to 12 carbon atoms or 3 to 12 carbon atoms. Specific examples of the alkyl group include methyl, ethyl, n-propyl, isopropyl, n-butyl, sec-butyl, isobutyl, tert-butyl, and n-pentyl.

[0286] The above alkyl group may contain an oxygen atom between carbon atom bonds, and examples thereof include 2-methoxyethyl and 2-ethoxyethyl.

[0287] In addition, any hydrogen atom of the above alkyl group may be substituted with a fluorine atom, and examples thereof include trifluoromethyl, difluoromethyl, fluoromethyl, 2,2,2-trifluoroethyl, 2,2-difluoroethyl, 2-fluoroethyl, 3-fluoropropyl, 3,3,3-trifluoropropyl, 2,2,3,3,3-pentafluoropropyl, 2,2,3,3-tetrafluoropropyl, and hexafluoroisopropyl.

[0288] The alkyl group may have a carbon number of 6 or less, thereby reducing the resistance of the film formed on the electrode. The alkyl group may have a carbon number of 4 or less, and may be a methyl group, an ethyl group, an n-propyl group, an isopropyl group, an n-butyl group, or a tert-butyl group.

[0289] R 25 and R 26 Each independently may be a halogen atom, a hydrogen atom, a nitro group, or an alkyl group having 1 to 4 carbon atoms, may be a fluorine atom, a hydrogen atom, a nitro group, or a methyl group, or may be a fluorine atom, a hydrogen atom, or a nitro group.

[0290] Specifically, the compound represented by the general formula (5) may be at least one selected from the group consisting of compounds represented by the following formulae (5-1-a) to (5-1-f′).

[0291] More preferably, it is at least one selected from the group consisting of a compound represented by formula (5-1-e) (also referred to as compound (5-1-e), a compound represented by formula (5-1-m) (also referred to as compound (5-1-m), a compound represented by formula (5-1-o) (also referred to as compound (5-1-o), a compound represented by formula (5-1-y) (also referred to as compound (5-1-y)) and a compound represented by formula (5-1-d') (also referred to as compound (5-1-d').

[0292] More preferably, it is at least one selected from the group consisting of compound (5-1-e), compound (5-1-m) and compound (5-1-d′).

[0293] Particularly preferred is at least one selected from the group consisting of compound (5-1-e) and compound (5-1-m).

[0294]

[0295]

[0296] Hereinafter, the compound represented by the general formula (6) will be described.

[0297]

[0298] R 28represents a halogen atom or a linear or branched alkyl group having 1 to 12 carbon atoms. Specific examples of the alkyl group include methyl, ethyl, n-propyl, isopropyl, n-butyl, sec-butyl, isobutyl, tert-butyl, and n-pentyl.

[0299] The above alkyl group may contain an oxygen atom between carbon atom bonds, and examples thereof include 2-methoxyethyl and 2-ethoxyethyl.

[0300] In addition, any hydrogen atom of the above alkyl group may be substituted with a fluorine atom, and examples thereof include trifluoromethyl, difluoromethyl, fluoromethyl, 2,2,2-trifluoroethyl, 2,2-difluoroethyl, 2-fluoroethyl, 3-fluoropropyl, 3,3,3-trifluoropropyl, 2,2,3,3,3-pentafluoropropyl, 2,2,3,3-tetrafluoropropyl, and hexafluoroisopropyl.

[0301] The alkyl group may have a carbon number of 6 or less, thereby reducing the resistance of the film formed on the electrode. The alkyl group may have a carbon number of 4 or less, and may be a methyl group, an ethyl group, an n-propyl group, an isopropyl group, an n-butyl group, or a tert-butyl group.

[0302] R 28 It may be a halogen atom or an alkyl group having 1 to 4 carbon atoms, it may be a fluorine atom or a methyl group, and it may be a fluorine atom.

[0303] R 29 and R 31 Each independently represents a halogen atom, a hydrogen atom, or a linear or branched alkyl group having 1 to 12 carbon atoms. Specific examples of the alkyl group include methyl, ethyl, n-propyl, isopropyl, n-butyl, sec-butyl, isobutyl, tert-butyl, and n-pentyl.

[0304] The above alkyl group may contain an oxygen atom between carbon atom bonds, and examples thereof include 2-methoxyethyl and 2-ethoxyethyl.

[0305] In addition, any hydrogen atom of the above alkyl group may be substituted with a fluorine atom, and examples thereof include trifluoromethyl, difluoromethyl, fluoromethyl, 2,2,2-trifluoroethyl, 2,2-difluoroethyl, 2-fluoroethyl, 3-fluoropropyl, 3,3,3-trifluoropropyl, 2,2,3,3,3-pentafluoropropyl, 2,2,3,3-tetrafluoropropyl, and hexafluoroisopropyl.

[0306] The alkyl group may have a carbon number of 6 or less, thereby reducing the resistance of the film formed on the electrode. The alkyl group may have a carbon number of 4 or less, and may be a methyl group, an ethyl group, an n-propyl group, an isopropyl group, an n-butyl group, or a tert-butyl group.

[0307] R 29and R 31 Each independently may be a halogen atom, a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, may be a hydrogen atom or a methyl group, or may be a hydrogen atom.

[0308] R 30 and R 32 Each independently represents a hydrogen atom, a linear or branched alkyl group having 1 to 12 carbon atoms, a linear or branched alkenyl group having 2 to 12 carbon atoms, or a linear or branched alkynyl group having 2 to 12 carbon atoms.

[0309] Specific examples of the alkyl group include methyl, ethyl, n-propyl, isopropyl, n-butyl, sec-butyl, isobutyl, tert-butyl, and n-pentyl.

[0310] Specific examples of the alkenyl group include allyl group and the like.

[0311] Specific examples of the alkynyl group include propargyl and the like.

[0312] At least one of an oxygen atom and a nitrogen atom may be optionally contained between carbon atom-carbon atom bonds in the above-mentioned alkyl, alkenyl or alkynyl groups, for example, 2-methoxyethyl, 2-ethoxyethyl, (allyloxy)methyl, (propargyloxy)methyl, (dimethylamino)ethyl, (diethylamino)ethyl, etc.

[0313] The alkyl group may contain a carbon-nitrogen unsaturated bond, and examples thereof include cyanomethyl and cyanoethyl.

[0314] In addition, any hydrogen atom of the above-mentioned alkyl, alkenyl or alkynyl group may be substituted with a fluorine atom. For example, trifluoromethyl, difluoromethyl, fluoromethyl, 2,2,2-trifluoroethyl, 2,2-difluoroethyl, 2-fluoroethyl, 3-fluoropropyl, 3,3,3-trifluoropropyl, 2,2,3,3,3-pentafluoropropyl, 2,2,3,3-tetrafluoropropyl, hexafluoroisopropyl, 1,1-bis(trifluoromethyl)-2-propenyl, 3,3,3-trifluoropropynyl, etc. can be mentioned.

[0315] If the number of carbon atoms of the alkyl, alkenyl or alkynyl group is 6 or less, the resistance when a film is formed on the electrode can be reduced. The number of carbon atoms of the alkyl, alkenyl or alkynyl group can be 4 or less, and can be methyl, ethyl, n-propyl, isopropyl, n-butyl, tert-butyl, allyl, propargyl or cyanomethyl.

[0316] R 30 and R 32 Each independently may be an alkyl group, alkenyl group or alkynyl group having 1 to 4 carbon atoms, and may be a methyl group, an ethyl group, an allyl group, a propargyl group or a cyanomethyl group.

[0317] Specifically, the compound represented by the general formula (6) may be at least one selected from the group consisting of compounds represented by the following formulae (6-1-a) to (6-1-j).

[0318] More preferably, it is at least one selected from the group consisting of a compound represented by formula (6-1-a) (also referred to as compound (6-1-a), a compound represented by formula (6-1-c) (also referred to as compound (6-1-c), a compound represented by formula (6-1-d) (also referred to as compound (6-1-d)) and a compound represented by formula (6-1-e) (also referred to as compound (6-1-e).

[0319] More preferably, it is at least one selected from the group consisting of compound (6-1-c), compound (6-1-d) and compound (6-1-e).

[0320] In particular, at least one selected from the group consisting of compound (6-1-c) and compound (6-1-e) is preferred.

[0321]

[0322] In the non-aqueous electrolyte disclosed herein, the lower limit of the total amount of the above-mentioned component (I) (hereinafter also referred to as "concentration of (I)") relative to the total amount (100% by mass) of the non-aqueous electrolyte can be set to 0.01% by mass or more, 0.05% by mass or more, or 0.1% by mass or more. In addition, the upper limit of the concentration of (I) can be set to 10.0% by mass or less, 5.0% by mass or less, or 2.0% by mass or less.

[0323] By setting the concentration of (I) to 0.01% by mass or more, it is easy to obtain the effect of suppressing the initial resistance rise of the nonaqueous electrolyte battery using the nonaqueous electrolyte. On the other hand, by setting the concentration of (I) to 10.0% by mass or less, it is possible to suppress the viscosity rise of the nonaqueous electrolyte, and it is easy to obtain the effect of suppressing the resistance rise of the nonaqueous electrolyte battery using the nonaqueous electrolyte.

[0324] In the non-aqueous electrolyte solution of the present disclosure, as the component (I), one compound may be used alone, or two or more compounds may be mixed in any combination and ratio depending on the application.

[0325] The compound represented by the general formula (1) can be produced by various methods, and the production method is not particularly limited.

[0326] For example, it can be obtained by reacting tetrahydro-2-pyrimidinone or 2-piperidone with fluorosulfonyl isocyanate or difluorophosphoryl isocyanate, and then reacting with lithium hydride, sodium hydride or dialkyl sulfate.

[0327] The compound represented by the general formula (2) can be produced by various methods, and the production method is not particularly limited.

[0328] For example, it can be obtained by reacting tetrahydro-2-pyrimidinone with fluorosulfonyl isocyanate or difluorophosphoryl isocyanate, and then reacting with lithium hydride, sodium hydride or dialkyl sulfate.

[0329] The compound represented by the general formula (3) can be produced by various methods. The production method is not particularly limited.

[0330] For example, it can be obtained by reacting 1-methanesulfonyl-2-imidazolidinone or 1-fluorosulfonyl-2-imidazolidinone with fluorosulfonyl isocyanate or difluorophosphoryl isocyanate, and then reacting with lithium hydride, sodium hydride or dialkyl sulfate.

[0331] The compound represented by the general formula (4-1), the compound represented by the general formula (4-2), and the compound represented by the general formula (4-3) can be produced by various methods. The production method is not particularly limited.

[0332] For example, it can be obtained by reacting urazole or 2,5-oxazolidinedione with fluorosulfonyl isocyanate or difluorophosphoryl isocyanate, and then reacting with lithium hydride, sodium hydride or dialkyl sulfate.

[0333] The compound represented by the general formula (5) can be produced by various methods, and the production method is not particularly limited.

[0334] For example, it can be obtained by reacting uracil or fluorouracil with fluorosulfonyl isocyanate or difluorophosphoryl isocyanate, and then reacting with lithium hydride, sodium hydride or dialkyl sulfate.

[0335] The compound represented by the general formula (6) can be produced by various methods. The production method is not particularly limited.

[0336] For example, it can be obtained by reacting methyleneaminoacetonitrile or methyleneaminopropylene with fluorosulfonyl isocyanate or methanesulfonyl isocyanate.

[0337] It should be noted that the present disclosure also relates to the following compounds:

[0338] In the above general formula (1), R 1 A compound representing POF2 or SO2F;

[0339] In the above general formula (2), R6 and R 7 Each independently represents a compound of POF2 or SO2F;

[0340] In the above general formula (3), R 12 A compound representing POF2 or SO2F;

[0341] In the above general formulas (4-1), (4-2) and (4-3), R 18 A compound representing POF2 or SO2F;

[0342] In the above general formula (5), X 4 Indicates CH2, NH or O, R 24 represents a compound of POF2 or SO2F; and,

[0343] In the above general formula (6), R 28 A compound containing a fluorine atom.

[0344] The above compounds are suitable for use as additives in non-aqueous electrolytes.

[0345] <About (II) Solute>

[0346] The nonaqueous electrolyte solution of the present disclosure contains a solute.

[0347] The solute is not particularly limited, and may be an ionic salt or an ionic salt containing fluorine.

[0348] As the solute, for example, it can be an ionic salt formed by a pair of at least one cation selected from the group consisting of alkali metal ions represented by lithium ions and sodium ions, alkaline earth metal ions and quaternary ammonium, and at least one anion selected from the group consisting of hexafluorophosphate anion, tetrafluoroborate anion, perchlorate anion, hexafluoroarsenate anion, hexafluoroantimonate anion, perfluoroalkanesulfonic acid anion, bis(trifluoromethanesulfonyl)imide anion, bis(pentafluoroethanesulfonyl)imide anion, (trifluoromethanesulfonyl)(pentafluoroethanesulfonyl)imide anion, bis(fluorosulfonyl)imide anion, (trifluoromethanesulfonyl)(fluorosulfonyl)imide anion, (pentafluoroethanesulfonyl)(fluorosulfonyl)imide anion, tris(trifluoromethanesulfonyl)methide anion, aluminate anion, chloroaluminate anion and halogen anion.

[0349] The solute may be at least one selected from the group consisting of LiPF6, LiBF4, LiSbF6, LiAsF6, LiClO4, LiCF3SO3, LiC4F9SO3, LiN(SO2F)2, LiAlO2, LiAlCl4, LiCl and LiI, or may be at least one selected from the group consisting of NaPF6, NaBF4, NaSbF6, NaAsF6, NaClO4, NaCF3SO3, NaC4F9SO3, NaN(SO2F)2, NaAlO2, NaAlCl4, NaCl and NaI.

[0350] These solutes may be used alone or in combination of two or more in any ratio depending on the application.

[0351] Among them, from the perspective of energy density, power characteristics, life, etc. as a non-aqueous electrolyte battery, the cation can be at least one selected from the group consisting of lithium, sodium, potassium, magnesium and quaternary ammonium, and the anion can be at least one selected from the group consisting of hexafluorophosphate anion, tetrafluoroborate anion, bis(trifluoromethanesulfonyl)imide anion, and bis(fluorosulfonyl)imide anion.

[0352] The total amount of solute in the non-aqueous electrolyte disclosed in the present invention (hereinafter also referred to as "solute concentration") is not particularly limited. Relative to the total amount of the non-aqueous electrolyte, the lower limit can be set to 0.5 mol / L or more, 0.7 mol / L or more, or 0.9 mol / L or more. In addition, the upper limit of the solute concentration can be set to 5.0 mol / L or less, 4.0 mol / L or less, or 2.0 mol / L or less. By setting the solute concentration to 0.5 mol / L or more, the reduction in the cycle characteristics and power characteristics of the non-aqueous electrolyte battery caused by the reduction in ionic conductivity can be suppressed. By setting it to 5.0 mol / L or less, the reduction in ionic conductivity, the cycle characteristics, and the power characteristics of the non-aqueous electrolyte battery caused by the increase in the viscosity of the non-aqueous electrolyte can be suppressed.

[0353] <Regarding (III) Non-aqueous organic solvent>

[0354] The type of the nonaqueous organic solvent used in the nonaqueous electrolyte solution of the present disclosure is not particularly limited, and any nonaqueous organic solvent can be used.

[0355] The nonaqueous organic solvent may contain at least one selected from the group consisting of cyclic esters, chain esters, cyclic ethers, chain ethers, sulfone compounds, sulfoxide compounds, and ionic liquids.

[0356] Specifically, the nonaqueous organic solvent may include an organic solvent selected from the group consisting of ethyl methyl carbonate (hereinafter also referred to as "EMC"), dimethyl carbonate (hereinafter also referred to as "DMC"), diethyl carbonate (hereinafter also referred to as "DEC"), methyl propyl carbonate, ethyl propyl carbonate, methyl butyl carbonate, 2,2,2-trifluoroethyl methyl carbonate, 2,2,2-trifluoroethyl ethyl carbonate, 2,2,2-trifluoroethyl propyl carbonate, bis(2,2,2-trifluoroethyl) carbonate, 1,1,1,3,3,3-hexafluoro-1-propyl methyl carbonate, 1,1,1,3,3,3-hexafluoro-1-propyl ethyl carbonate, 1,1,1,3,3,3-hexafluoro-1-propyl propyl carbonate, bis(1,1,1,3,3 At least one of the group consisting of 1,3-hexafluoro-1-propyl) carbonate, ethylene carbonate (hereinafter also referred to as "EC"), propylene carbonate (hereinafter also referred to as "PC"), butylene carbonate, fluoroethylene carbonate (hereinafter also referred to as "FEC"), difluoroethylene carbonate, methyl acetate, ethyl acetate, methyl propionate, ethyl propionate, methyl 2-fluoropropionate, ethyl 2-fluoropropionate, ethyl ether, dibutyl ether, diisopropyl ether, 1,2-dimethoxyethane, tetrahydrofuran, 2-methyltetrahydrofuran, furan, tetrahydropyran, 1,3-dioxane, 1,4-dioxane, N,N-dimethylformamide, acetonitrile, propionitrile, dimethyl sulfoxide, sulfolane, γ-butyrolactone and γ-valerolactone.

[0357] In the present disclosure, an ionic liquid having a salt structure may be used as the non-aqueous organic solvent.

[0358] When the nonaqueous organic solvent contains at least one selected from the group consisting of cyclic esters and chain esters, the input / output characteristics at low temperatures are excellent.

[0359] Furthermore, when the cyclic ester is a cyclic carbonate, the cycle characteristics at high temperature are excellent.

[0360] Specific examples of the cyclic carbonate include EC, PC, butylene carbonate, FEC and the like. Among them, at least one selected from the group consisting of EC, PC and FEC is preferred.

[0361] Furthermore, when the chain ester is a chain carbonate, the cycle characteristics at high temperature are excellent.

[0362] Specific examples of the above-mentioned linear carbonates include EMC, DMC, DEC, methyl propyl carbonate, ethyl propyl carbonate, 2,2,2-trifluoroethyl methyl carbonate, 2,2,2-trifluoroethyl ethyl carbonate, 1,1,1,3,3,3-hexafluoro-1-propyl methyl carbonate and 1,1,1,3,3,3-hexafluoro-1-propyl ethyl carbonate. Among them, at least one selected from the group consisting of EMC, DMC, DEC and methyl propyl carbonate is preferred.

[0363] Specific examples of the esters include methyl acetate, ethyl acetate, methyl propionate, ethyl propionate, methyl 2-fluoropropionate, and ethyl 2-fluoropropionate.

[0364] <About other additives>

[0365] Unless the gist of the present disclosure is impaired, commonly used additive components may be further added to the non-aqueous electrolyte solution of the present disclosure at any ratio.

[0366] Specific examples of other additives include cyclohexylbenzene, cyclohexylfluorobenzene, fluorobenzene, biphenyl, difluoroanisole, tert-butylbenzene, tert-amylbenzene, 2-fluorotoluene, 2-fluorobiphenyl, vinylene carbonate, dimethyl vinylene carbonate, vinyl ethylene carbonate, fluoroethylene carbonate, trans-difluoroethylene carbonate, methyl propargyl carbonate, ethyl propargyl carbonate, dipropargyl carbonate, maleic anhydride, succinic anhydride, propane sultone, 1,3-propane sultone, 1,3-propylene sulfone, and the like. lactone, butane sultone, 1,3,2-dioxathiolane-2,2-dioxide, 4-propyl-1,3,2-dioxathiolane-2,2-dioxide, methylene disulfonate, dimethylene disulfonate, trimethylene disulfonate, methyl methanesulfonate, 1,6-diisocyanatohexane, tris(trimethylsilyl)borate, succinonitrile, (ethoxy) pentafluorocyclotriphosphazene, lithium difluorobis(oxalato)phosphate, sodium difluorobis(oxalato)phosphate, difluoro Potassium bis(oxalate)phosphate, lithium difluorooxalatoborate, sodium difluorooxalatoborate, potassium difluorooxalatoborate, lithium bis(oxalate)borate, sodium bis(oxalate)borate, potassium bis(oxalate)borate, lithium tetrafluorooxalatophosphate, sodium tetrafluorooxalatophosphate, potassium tetrafluorooxalatophosphate, lithium tri(oxalate)phosphate, sodium tri(oxalate)phosphate, potassium tri(oxalate)phosphate, lithium difluorophosphate, sodium difluorophosphate, potassium difluorophosphate, lithium monofluorophosphate, sodium monofluorophosphate, potassium monofluorophosphate, lithium fluorosulfonate, sodium fluorosulfonate, potassium fluorosulfonate, Compounds having overcharge prevention effects, negative electrode coating formation effects, and positive electrode protection effects, such as lithium bis(difluorophosphoryl)imide, sodium bis(difluorophosphoryl)imide, potassium bis(difluorophosphoryl)imide, lithium (difluorophosphoryl)(fluorosulfonyl)imide, sodium (difluorophosphoryl)(fluorosulfonyl)imide, potassium (difluorophosphoryl)(fluorosulfonyl)imide, methylsulfonyl fluoride, ethylenesulfonyl fluoride, and phenyl difluorophosphate, may be used alone or in combination of two or more.

[0367] In addition, the non-aqueous electrolyte of the present invention may contain a diisocyanate selected from vinylene carbonate, bis(oxalate)borate, difluorooxalateborate, difluorobis(oxalate)phosphate, tetrafluorooxalatephosphate, tetrafluoro(malonate)phosphate, (difluorophosphoryl)(fluorosulfonyl)imide salt, difluorophosphate, fluorosulfonate, 1,3-propylene sultone, 1,3-propane sultone, 1,6-diisocyanatohexane, ethynylethylene carbonate, 1,3,2-dioxathiolane-2,2-dioxothiolane, At least one of compounds, 4-propyl-1,3,2-dioxathiolane-2,2-dioxide, methanedisulfonic acid methylene ester, 1,2-ethanedisulfonic anhydride, methylsulfonyl fluoride, tris(trimethylsilyl)borate, (ethoxy)pentafluorocyclotriphosphazene, tetrafluoro(picolinic acid)phosphate, 1,3-dimethyl-1,3-divinyl-1,3-bis(1,1,1,3,3,3-hexafluoroisopropyl)disiloxane, tert-butylbenzene, tert-amylbenzene, fluorobenzene and cyclohexylbenzene.

[0368] The content of the additive in the non-aqueous electrolyte may be 0.01% by mass or more and 5.0% by mass or less relative to the total amount of the non-aqueous electrolyte.

[0369] Furthermore, the nonaqueous electrolyte solution of the present disclosure may contain a compound represented by the following general formula (7) as another additive.

[0370]

[0371] [In general formula (7), R a ~R c Each is independently an organic group selected from a fluorine atom, a linear or branched alkyl group having 1 to 10 carbon atoms, a linear or branched alkoxy group having 1 to 10 carbon atoms, an alkenyl group having 2 to 10 carbon atoms, an alkenyloxy group having 2 to 10 carbon atoms, an alkynyl group having 2 to 10 carbon atoms, an alkynyloxy group having 2 to 10 carbon atoms, a cycloalkyl group having 3 to 10 carbon atoms, a cycloalkyloxy group having 3 to 10 carbon atoms, a cycloalkenyl group having 3 to 10 carbon atoms, a cycloalkenyloxy group having 3 to 10 carbon atoms, an aryl group having 6 to 10 carbon atoms, and an aryloxy group having 6 to 10 carbon atoms, and the organic group may contain a fluorine atom, an oxygen atom or an unsaturated bond. a ~R c At least one of them is a fluorine atom.

[0372] M m + is an alkali metal cation, an alkaline earth metal cation, or an onium cation, and m represents an integer equal to the valence of the corresponding cation.]

[0373] If the compound represented by the general formula (7) (salt having an imide anion) has at least one PF bond or SF bond, excellent low temperature characteristics are obtained. The more PF bonds and SF bonds there are in the salt having an imide anion, the more the low temperature characteristics can be improved. Therefore, the salt having an imide anion represented by the general formula (7) can be R a ~R c A compound composed entirely of fluorine atoms.

[0374] In addition, the salt having an imide anion represented by the general formula (7) may be:

[0375] R a ~R c At least one of is a fluorine atom, and

[0376] R a ~R c At least one of them is selected from compounds of hydrocarbon groups having 6 or less carbon atoms which may contain fluorine atoms.

[0377] In addition, the salt having an imide anion represented by the general formula (7) may be:

[0378] R a ~R c At least one of is a fluorine atom, and

[0379] R a ~R c At least one of them is selected from methyl, methoxy, ethyl, ethoxy, propyl, propoxy, vinyl, allyl, allyloxy, ethynyl, 2-propynyl, 2-propynyloxy, phenyl, phenoxy, 2,2-difluoroethyl, 2,2-difluoroethoxy, 2,2,2-trifluoroethyl, 2,2,2-trifluoroethoxy, 2,2,2-trifluoroethoxy, 2,2,3,3-tetrafluoropropyl, 2,2,3,3-tetrafluoropropoxy, 1,1,1,3,3,3-hexafluoroisopropyl and 1,1,1,3,3,3-hexafluoroisopropoxy.

[0380] The counter cation M of the salt having an imide anion represented by the general formula (7) is m+ The ion may be selected from the group consisting of lithium ion, sodium ion, potassium ion and tetraalkylammonium ion.

[0381] In the above general formula (7), R a ~R cExamples of the alkyl and alkoxy groups include alkyl groups having 1 to 10 carbon atoms, fluorinated alkyl groups, and alkoxy groups derived from these groups, such as methyl, ethyl, propyl, isopropyl, butyl, sec-butyl, tert-butyl, pentyl, 2,2-difluoroethyl, 2,2,2-trifluoroethyl, 2,2,3,3-tetrafluoropropyl and 1,1,1,3,3,3-hexafluoroisopropyl.

[0382] Examples of the alkenyl group and alkenyloxy group include alkenyl groups having 2 to 10 carbon atoms such as vinyl, allyl, 1-propenyl, isopropenyl, 2-butenyl and 1,3-butadienyl, fluorine-containing alkenyl groups, and alkenyloxy groups derived from these groups.

[0383] Examples of the alkynyl group and alkynyloxy group include alkynyl groups having 2 to 10 carbon atoms such as ethynyl, 2-propynyl and 1,1-dimethyl-2-propynyl, fluorine-containing alkynyl groups, and alkynyloxy groups derived from these groups.

[0384] Examples of the cycloalkyl group and cycloalkoxy group include cycloalkyl groups having 3 to 10 carbon atoms such as cyclopentyl and cyclohexyl, fluorine-containing cycloalkyl groups, and cycloalkoxy groups derived from these groups.

[0385] Examples of the cycloalkenyl group and cycloalkenyloxy group include cycloalkenyl groups having 3 to 10 carbon atoms such as cyclopentenyl and cyclohexenyl, fluorine-containing cycloalkenyl groups, and cycloalkenyloxy groups derived from these groups.

[0386] Examples of the aryl group and the aryloxy group include aryl groups having 6 to 10 carbon atoms such as phenyl, tolyl and xylyl, fluorine-containing aryl groups, and aryloxy groups derived from these groups.

[0387] Specific examples and synthesis methods of the salt having an imide anion represented by the general formula (7) include those described in International Publication No. 2017 / 111143.

[0388] The content of the salt having an imide anion represented by the general formula (7) in the non-aqueous electrolyte solution may be 0.01% by mass or more and 8.0% by mass or less relative to the total amount of the non-aqueous electrolyte solution.

[0389] In addition, for the ionic salt cited as a solute, when the content in the non-aqueous electrolyte is less than 0.5 mol / L, which is the lower limit of the suitable concentration of the solute, it can be used as "other additives" to exert the negative electrode coating formation effect and the positive electrode protection effect. In this case, the content in the non-aqueous electrolyte can be 0.01 mass % to 5.0 mass %.

[0390] As the ionic salt in this case, for example, when the non-aqueous electrolyte battery is a lithium ion battery, lithium hexafluorophosphate, lithium tetrafluoroborate, lithium trifluoromethanesulfonate, lithium bis(trifluoromethanesulfonyl)imide, lithium bis(fluorosulfonyl)imide, lithium (trifluoromethanesulfonyl)(fluorosulfonyl)imide, etc. can be mentioned; when the non-aqueous electrolyte battery is a sodium ion battery, sodium hexafluorophosphate, sodium tetrafluoroborate, sodium trifluoromethanesulfonate, sodium bis(trifluoromethanesulfonyl)imide, sodium bis(fluorosulfonyl)imide, sodium (trifluoromethanesulfonyl)(fluorosulfonyl)imide, etc. can be mentioned.

[0391] In addition, alkali metal salts other than the above-mentioned solutes may be used as additives.

[0392] Specific examples thereof include carboxylates such as lithium acrylate, sodium acrylate, lithium methacrylate, and sodium methacrylate; and sulfate ester salts such as lithium methyl sulfate, sodium methyl sulfate, lithium ethyl sulfate, and sodium ethyl sulfate.

[0393] For the non-aqueous electrolyte of the present invention, from the viewpoint of improving the durability (lifespan) of the battery, when the non-aqueous electrolyte battery is a lithium ion battery, the non-aqueous electrolyte may contain 0.01 to 5.0% by mass of at least one selected from vinylene carbonate, fluoroethylene carbonate, lithium bis(oxalato)borate, lithium difluorooxalatoborate, lithium difluorobis(oxalato)phosphate, lithium tetrafluorooxalatophosphate, lithium bis(fluorosulfonyl)imide, lithium (difluorophosphoryl)(fluorosulfonyl)imide, lithium difluorophosphate, lithium fluorosulfonate, 1,3-propylene sultone, 1,3-propane sultone, 1,3,2-dioxathiolane-2,2-dioxide and 4-propyl-1,3,2-dioxathiolane-2,2-dioxide, relative to the total amount of the non-aqueous electrolyte.

[0394] When the non-aqueous electrolyte battery is a sodium ion battery, it can contain 0.01 to 5.0 mass% of at least one selected from vinylene carbonate, fluoroethylene carbonate, sodium bis(oxalato)borate, sodium difluorooxalatoborate, sodium difluorobis(oxalato)phosphate, sodium tetrafluorooxalatophosphate, sodium bis(fluorosulfonyl)imide, sodium (difluorophosphoryl)(fluorosulfonyl)imide, sodium difluorophosphate, sodium fluorosulfonate, 1,3-propylene sultone, 1,3-propane sultone, 1,3,2-dioxathiolane-2,2-dioxide and 4-propyl-1,3,2-dioxathiolane-2,2-dioxide.

[0395] In addition, the non-aqueous electrolyte disclosed in the present invention may also contain a polymer, and when used in a non-aqueous electrolyte battery called a polymer battery, the non-aqueous electrolyte may be pseudo-solidified using a gelling agent or a cross-linked polymer. This also includes a polymer solid electrolyte containing a non-aqueous organic solvent as a plasticizer.

[0396] The polymer is not particularly limited as long as it is an aprotic polymer that can dissolve the above (I), (II) and the above other additives. For example, it can be mentioned: a polymer having polyethylene oxide in the main chain or side chain, a homopolymer or copolymer of polyvinylidene fluoride, a methacrylate polymer, polyacrylonitrile, etc. When a plasticizer is added to these polymers, an aprotic non-aqueous organic solvent can be used in the above-mentioned non-aqueous organic solvent.

[0397] 〔2. Non-aqueous electrolyte battery〕

[0398] The non-aqueous electrolyte battery of the present disclosure comprises at least the non-aqueous electrolyte of the present disclosure, a negative electrode, a positive electrode and a separator, and may further comprise an outer shell and the like.

[0399] The negative electrode is not particularly limited, and a material that can reversibly insert and extract alkali metal ions represented by lithium ions and sodium ions, or alkaline earth metal ions can be used.

[0400] For example, in the case of a lithium-ion secondary battery in which the cation is mainly lithium, as a negative electrode active material constituting the negative electrode, lithium ion doping / dedoping can be achieved, for example, a material containing at least one selected from the following substances: a carbon material having a d value of 0.340 nm or less in the lattice plane (002 plane) in X-ray diffraction; a carbon material having a d value of more than 0.340 nm in the lattice plane (002 plane) in X-ray diffraction; an oxide of one or more metals selected from Si, Sn, and Al; one or more metals selected from Si, Sn, and Al or alloys containing these metals or alloys of these metals or alloys with lithium, and lithium titanium oxide. These negative electrode active materials can be used alone or in combination of two or more. In addition, lithium metal, metal nitride, tin compound, conductive polymer, etc. can be used.

[0401] For example, in the case of a sodium ion secondary battery in which the cation is mainly sodium, as the negative electrode active material constituting the negative electrode, sodium metal, alloys of sodium metal and other metals such as tin, intermetallic compounds, various carbon materials represented by hard carbon, metal oxides such as titanium oxide, metal nitrides, tin (single substance), tin compounds, activated carbon, conductive polymers, etc. can be used. In addition to these, phosphorus (single substance) such as red phosphorus and black phosphorus, phosphorus compounds such as Co-P, Cu-P, Sn-P, Ge-P, Mo-P, antimony (single substance), Sb / C, Bi-Sb and other antimony compounds can also be used. These negative electrode active materials can be used alone or in combination of two or more.

[0402] The positive electrode is not particularly limited, and a material that can reversibly insert and extract alkali metal ions represented by lithium ions and sodium ions, or alkaline earth metal ions can be used.

[0403] For example, when the cation is lithium, the following lithium-containing transition metal composite oxides can be used as positive electrode materials: LiCoO2, LiNiO2, LiMnO2, LiMn2O4 and other lithium-containing transition metal composite oxides; these lithium-containing transition metal composite oxides are mixed with multiple transition metals such as Co, Mn, Ni and the like; these lithium-containing transition metal composite oxides are formed by replacing part of the transition metal with a metal other than other transition metals; phosphate compounds of transition metals such as LiFePO4, LiCoPO4, LiMnPO4, etc., which are called olivine; oxides such as TiO2, V2O5, MoO3; sulfides such as TiS2, FeS; or conductive polymers such as polyacetylene, polyparaphenylene, polyaniline, and polypyrrole, activated carbon, free radical-generating polymers, carbon materials, etc.

[0404] For example, when the cation is sodium, as the positive electrode material (positive electrode active material), NaCrO2, NaFe 0.5 Co 0.5 O2、NaFe 0.4 Mn 0.3 Ni 0.3 O2、NaNi 0.5 Ti 0.3 Mn 0.2 O2、NaNi 1 / 3 Ti 1 / 3 Mn 1 / 3 O2、NaNi 0.33 Ti 0.33 Mn 0.16 Mg 0.17 O2、Na 2 / 3 Ni 1 / 3 Ti 1 / 6 Mn 1 / 2 O2、Na 2 / 3 Ni 1 / 3 Mn 2 / 3 O2 and other sodium-containing transition metal composite oxides; these sodium-containing transition metal composite oxides are mixed with a variety of transition metals such as Co, Mn, Ni; these sodium-containing transition metal composite oxides are formed by replacing part of the transition metal with metals other than other transition metals; NaFePO4, NaVPO4F, Na3V2(PO4)3, Na2Fe2(SO4)3 and other polyanionic compounds, composition formula Na a M b [Fe(CN)6] cSodium salts of Prussian blue analogs shown (representing M = Cr, Mn, Fe, Co, Ni, Cu or Zn, 0≤a≤2, 0.5≤b≤1.5, 0.5≤c≤1.5); oxides such as TiO2, V2O5, MoO3; sulfides such as TiS2, FeS; or conductive polymers such as polyacetylene, polyparaphenylene, polyaniline, and polypyrrole; activated carbon, free radical-generating polymers, carbon materials, etc.

[0405] Acetylene black, Ketjen black, carbon fiber, or graphite as a conductive material, polytetrafluoroethylene, polyvinylidene fluoride, or SBR resin as a binder may be added to the positive and negative electrode materials, and electrode sheets further molded into sheets may be used.

[0406] As a separator for preventing the positive electrode and the negative electrode from contacting each other, a nonwoven fabric or a porous sheet made of polypropylene, polyethylene, paper, or glass fiber can be used.

[0407] The above elements can be assembled into electrochemical devices in the shape of a coin, cylinder, square, or aluminum laminate.

[0408] Example

[0409] Hereinafter, the present disclosure will be described in more detail by way of examples, but the present disclosure is not limited to these descriptions at all.

[0410] <Synthesis example-1>

[0411] In a 50 ml eggplant-shaped bottle, add EMC 10.0 g, tetrahydro-2-pyrimidinone 0.5 g, and then slowly add fluorosulfonyl isocyanate 0.6 g. After the internal temperature drops to 25°C, add lithium hydride 0.04 g. After the foaming stops, concentrate to obtain 1.1 g of compound (1-1-g) (recovery rate 98%). 1 H NMR (CD3CN)σ H 3.90, 3.72, 2.20ppm, 19 F NMR (CD3CN)σ F 49.5ppm.

[0412] <Synthesis example-2>

[0413] In a 50 ml eggplant-shaped bottle, put EMC 10.0 g, hexahydro-1,3-diazepine-2-one 0.6 g, and slowly add fluorosulfonyl isocyanate 0.6 g. After the internal temperature drops to 25°C, add 0.04 g of lithium hydride. After the foaming stops, concentrate to obtain 1.4 g of compound (1-2-g) (recovery rate 96%). 1 H NMR (CD3CN)σ H 3.82, 3.40, 3.01, 2.41ppm,19 F NMR (CD3CN)σ F 49.7ppm.

[0414] <Synthesis example-3>

[0415] In a 50 ml eggplant-shaped bottle, 10.0 g of EMC and 0.5 g of tetrahydro-2-pyrimidinone were placed, and then 1.3 g of fluorosulfonyl isocyanate was slowly added. After the internal temperature was lowered to 25°C, the mixture was concentrated to obtain 1.8 g of compound (2-1-d) (recovery rate 98%). 1 H NMR (CD3CN)σ H 12.0, 3.83, 1.95ppm, 19 F NMR (CD3CN)σ F 50.9ppm.

[0416] <Synthesis example-4>

[0417] In a 50 ml eggplant-shaped bottle, 10.0 g of EMC and 0.6 g of hexahydro-1,3-diazepine-2-one were placed, and 1.3 g of fluorosulfonyl isocyanate was slowly added. After the internal temperature dropped to 25°C, 0.08 g of lithium hydride was added. After the foaming stopped, the mixture was concentrated to obtain 1.4 g of compound (2-2-a) (recovery rate 97%). 1 H NMR (CD3CN)σ H 3.91, 3.10ppm, 19 F NMR (CD3CN)σ F 50.6ppm.

[0418] <Synthesis example-5>

[0419] In a 50 ml eggplant-shaped bottle, 10.0 g of EMC and 0.8 g of 1-methanesulfonyl-2-imidazolidinone were placed, and then 0.6 g of fluorosulfonyl isocyanate was slowly added. After the internal temperature was lowered to 25°C, the mixture was concentrated to obtain 1.4 g of compound (3-1-e) (recovery rate 97%). 1 H NMR (CD3CN)σ H 11.5, 3.70, 3.40ppm, 19 F NMR (CD3CN)σ F 51.3ppm.

[0420] <Synthesis example-6>

[0421] In a 50 ml eggplant-shaped bottle, 10.0 g of EMC and 0.9 g of 1-methanesulfonyl-2-tetrahydropyrimidone were placed, and then 0.6 g of fluorosulfonyl isocyanate was slowly added. After the internal temperature was lowered to 25°C, the mixture was concentrated to obtain 1.4 g of compound (3-2-e) (recovery rate 97%).1 H NMR (CD3CN)σ H 11.3, 3.82, 3.74, 3.40, 2.08ppm, 19 F NMR (CD3CN)σ F 51.1ppm.

[0422] <Synthesis example-7>

[0423] In a 50 ml eggplant-shaped bottle, 10.0 g of EMC and 0.5 g of urea azole were placed, and then 0.6 g of fluorosulfonyl isocyanate was slowly added. After the internal temperature dropped to 25°C, 0.04 g of lithium hydride was added. After the foaming stopped, the mixture was concentrated to obtain 1.0 g of compound (4-1-j) (recovery rate 96%). 1 H NMR (CD3CN)σ H 9.60, 9.42ppm, 19 F NMR (CD3CN)σ F 54.9ppm.

[0424] <Synthesis example-8>

[0425] In a 50 ml eggplant-shaped bottle, 10.0 g of EMC and 0.6 g of 1,3,5-triazine-2,4-dione were placed, and then 0.6 g of fluorosulfonyl isocyanate was slowly added. After the internal temperature dropped to 25°C, 0.04 g of lithium hydride was added. After the foaming stopped, the mixture was concentrated to obtain 1.0 g of compound (4-2-j) (recovery rate 83%). 1 H NMR (CD3CN)σ H 10.93, 9.52, 7.20ppm, 19 F NMR (CD3CN)σ F 54.0ppm.

[0426] <Synthesis example-9>

[0427] In a 50 ml eggplant-shaped bottle, 10.0 g of EMC and 0.6 g of uracil were placed, and then 0.6 g of fluorosulfonyl isocyanate was slowly added. After the internal temperature was lowered to 25°C, the mixture was concentrated to obtain 1.0 g of compound (5-1-e) (recovery rate 81%). 1 H NMR (CD3CN)σ H 11.60, 11.20, 7.90, 5.54ppm, 19 F NMR (CD3CN)σ F 49.2ppm.

[0428] <Synthesis example-10>

[0429] In a 50 ml eggplant-shaped bottle, 10.0 g of EMC and 0.3 g of methyleneaminoacetonitrile were placed, and then 0.3 g of fluorosulfonyl isocyanate was slowly added. After the internal temperature was lowered to 25°C, the mixture was concentrated to obtain 0.6 g of compound (6-1-e) (recovery rate 99%). 1 H NMR (CD3CN)σ H 5.02, 4.49, 4.28, 3.96ppm, 19 F NMR (CD3CN)σ F 54.8ppm.

[0430] [Preparation of non-aqueous electrolyte solutions of Examples and Comparative Examples]

[0431] <Comparative Example 1-1>

[0432] (Preparation of LiPF6 solution)

[0433] In a glove box with a dew point below -60°C, EC, FEC, EMC and DMC were mixed at a volume ratio of EC: FEC: EMC: DMC = 2: 1: 3: 4 (component (III)). Then, while maintaining the internal temperature below 40°C, LiPF6 (component (II)) was added in an amount of 1.0 mol / L relative to the total amount of the non-aqueous electrolyte and stirred to completely dissolve, thereby obtaining a LiPF6 solution. This was used as a comparative non-aqueous electrolyte 1-1.

[0434] <Example 1-1>

[0435] (Preparation of non-aqueous electrolyte solution 1-1)

[0436] In a glove box with a dew point below -60°C, EC, FEC, EMC and DMC were mixed in a volume ratio of EC:FEC:EMC:DMC=2:1:3:4 (component (III)). Then, while maintaining the internal temperature below 40°C, LiPF6 (component (II)) was added in an amount of 1.0 mol / L relative to the total amount of the non-aqueous electrolyte, and compound (1-1-g) (component (I)) belonging to the compound represented by general formula (1) was added in a concentration of 0.5% by mass relative to the total amount of the non-aqueous electrolyte, and stirred for 1 hour to dissolve, thereby preparing the non-aqueous electrolyte 1-1 of Example 1-1.

[0437] <Examples 1-2 to 1-15, Comparative Examples 1-2 to 1-5>

[0438] (Preparation of non-aqueous electrolyte solutions 1-2 to 1-15 and comparative non-aqueous electrolyte solutions 1-2 to 1-5)

[0439] The type and content of component (I) (or comparative compound) were changed as described in Table 1. Non-aqueous electrolyte solutions 1-2 to 1-15 and comparative non-aqueous electrolyte solutions 1-2 to 1-5 were obtained in the same manner as in the preparation of non-aqueous electrolyte solution 1-1. It should be noted that in the following tables, MP refers to N-methylpyrrolidone and DMI refers to 1,3-dimethylimidazolidinone.

[0440] <Examples 2-1 to 2-10, Comparative Examples 2-1 to 2-3>

[0441] (Preparation of non-aqueous electrolyte solutions 2-1 to 2-10 and comparative non-aqueous electrolyte solutions 2-1 to 2-3)

[0442] Furthermore, vinylene carbonate (hereinafter sometimes referred to as "VC") was added as another additive in a manner to obtain the concentration described in Table 2 and dissolved. In addition, the same method as the preparation of non-aqueous electrolyte solutions 1-2, 1-4, 1-6, 1-8, 1-10, 1-11, 1-12, 1-13, 1-14, 1-15, comparative non-aqueous electrolyte solutions 1-1, 1-3 and 1-5 was followed to obtain non-aqueous electrolyte solutions 2-1 to 2-10 and comparative non-aqueous electrolyte solutions 2-1 to 2-3, respectively.

[0443] <Examples 3-1 to 3-10, Comparative Examples 3-1 to 3-3>

[0444] (Preparation of non-aqueous electrolyte solutions 3-1 to 3-10 and comparative non-aqueous electrolyte solutions 3-1 to 3-3)

[0445] Except that VC was changed to lithium bis(oxalato)borate (hereinafter sometimes referred to as "BOB"), nonaqueous electrolyte solutions 3-1 to 3-10 and comparative nonaqueous electrolyte solutions 3-1 to 3-3 were obtained in the same manner as nonaqueous electrolyte solutions 2-1 to 2-10 and comparative nonaqueous electrolyte solutions 2-1 to 2-3.

[0446] <Examples 4-1 to 4-10, Comparative Examples 4-1 to 4-3>

[0447] (Preparation of non-aqueous electrolyte solutions 4-1 to 4-10 and comparative non-aqueous electrolyte solutions 4-1 to 4-3)

[0448] Except that VC was changed to lithium difluorobis(oxalato)phosphate (hereinafter sometimes referred to as "DFBOP"), nonaqueous electrolyte solutions 4-1 to 4-10 and comparative nonaqueous electrolyte solutions 4-1 to 4-3 were obtained in the same manner as nonaqueous electrolyte solutions 2-1 to 2-10 and comparative nonaqueous electrolyte solutions 2-1 to 2-3.

[0449] <Examples 5-1 to 5-10, Comparative Examples 5-1 to 5-3>

[0450] (Preparation of non-aqueous electrolyte solutions 5-1 to 5-10 and comparative non-aqueous electrolyte solutions 5-1 to 5-3)

[0451] Nonaqueous electrolyte solutions 5-1 to 5-10 and comparative nonaqueous electrolyte solutions 5-1 to 5-3 were obtained in the same manner as in the preparation of nonaqueous electrolyte solutions 2-1 to 2-10 and comparative nonaqueous electrolyte solutions 2-1 to 2-3, except that VC was changed to lithium tetrafluorooxalate phosphate (hereinafter sometimes referred to as "TFOP").

[0452] <Examples 6-1 to 6-10, Comparative Examples 6-1 to 6-3>

[0453] (Preparation of non-aqueous electrolyte solutions 6-1 to 6-10 and comparative non-aqueous electrolyte solutions 6-1 to 6-3)

[0454] Except that VC was changed to lithium bis(fluorosulfonyl)imide (hereinafter sometimes referred to as "FSI"), nonaqueous electrolyte solutions 6-1 to 6-10 and comparative nonaqueous electrolyte solutions 6-1 to 6-3 were obtained in the same manner as nonaqueous electrolyte solutions 2-1 to 2-10 and comparative nonaqueous electrolyte solutions 2-1 to 2-3.

[0455] <Examples 7-1 to 7-10, Comparative Examples 7-1 to 7-3>

[0456] (Preparation of non-aqueous electrolyte solutions 7-1 to 7-10 and comparative non-aqueous electrolyte solutions 7-1 to 7-3)

[0457] Nonaqueous electrolyte solutions 7-1 to 7-10 and comparative nonaqueous electrolyte solutions 7-1 to 7-3 were obtained in the same manner as in the preparation of nonaqueous electrolyte solutions 2-1 to 2-10 and comparative nonaqueous electrolyte solutions 2-1 to 2-3, except that VC was changed to lithium difluorophosphate (hereinafter sometimes referred to as "DFP").

[0458] <Examples 8-1 to 8-10, Comparative Examples 8-1 to 8-3>

[0459] (Preparation of non-aqueous electrolyte solutions 8-1 to 8-10 and comparative non-aqueous electrolyte solutions 8-1 to 8-3)

[0460] Nonaqueous electrolyte solutions 8-1 to 8-10 and comparative nonaqueous electrolyte solutions 8-1 to 8-3 were obtained in the same manner as in the preparation of nonaqueous electrolyte solutions 2-1 to 2-10 and comparative nonaqueous electrolyte solutions 2-1 to 2-3 except that VC was changed to lithium fluorosulfonate (hereinafter sometimes referred to as "FS").

[0461] In the following Tables 1 to 8, the content of component (I) (or comparative compound) indicates the concentration relative to the total amount of the nonaqueous electrolyte solution. In addition, the content of other additives indicates the concentration relative to the total amount of the nonaqueous electrolyte solution.

[0462] [Manufacturing of non-aqueous electrolyte batteries]

[0463] (Production of NCM622 positive electrode)

[0464] In LiNi 0.6 Co 0.2 Mn 0.2 90.0% by mass of O2 powder was mixed with 5.0% by mass of polyvinylidene fluoride (hereinafter also referred to as PVDF) as a binder and 5.0% by mass of acetylene black as a conductive material, and N-methyl-2-pyrrolidone was further added to prepare a positive electrode composite material paste. The paste was applied to both sides of an aluminum foil (A1085), dried, pressed, and then punched into 4 cm × 5 cm to obtain a NCM622 positive electrode for testing.

[0465] (Production of NCM811 positive electrode)

[0466] In LiNi 0.8 Co 0.1 Mn 0.1 92.0% by mass of O2 powder was mixed with 3.5% by mass of PVDF as a binder and 4.5% by mass of acetylene black as a conductive material, and N-methyl-2-pyrrolidone was further added to prepare a positive electrode composite material paste. The paste was applied to both sides of an aluminum foil (A1085), dried, pressed, and then punched into 4 cm × 5 cm to obtain a NCM811 positive electrode for testing.

[0467] (Manufacturing of artificial graphite negative electrode)

[0468] 90.0% by mass of artificial graphite powder, 5.0% by mass of PVDF as a binder, and 5.0% by mass of acetylene black as a conductive material were mixed to prepare a negative electrode composite material paste. The paste was applied to one side of a copper foil, dried, pressed, and then punched into 4 cm × 5 cm to obtain an artificial graphite negative electrode for testing.

[0469] (Manufacturing of Silicon-Containing Graphite Anode)

[0470] In 85.0% by mass of artificial graphite powder, 7.0% by mass of nano silicon, 3.0% by mass of conductive material (HS-100), 2.0% by mass of carbon nanofiber (VGCF), 2.0% by mass of styrene butadiene rubber, 1.0% by mass of sodium carboxymethyl cellulose and water were mixed to prepare a negative electrode composite material paste. The paste was applied to one side of a copper foil, dried, pressed, and then punched into 4 cm × 5 cm to obtain a graphite negative electrode containing silicon for testing.

[0471] (Manufacturing of non-aqueous electrolyte batteries)

[0472] In an argon atmosphere with a dew point below -50°C, after welding the terminal on the above-mentioned NCM622 positive electrode, the two sides thereof are clamped by two polyethylene separators (5 cm × 6 cm), and the outer side thereof is further clamped by two artificial graphite negative electrodes with terminals pre-welded thereto in such a way that the negative electrode active material surface faces the positive electrode active material surface. Then, they are placed in an aluminum laminated bag with an opening on one side, and after vacuum injection of a non-aqueous electrolyte, the opening is sealed with heat, thereby making aluminum laminated non-aqueous electrolyte batteries of the embodiments and comparative examples. It should be noted that as non-aqueous electrolytes, the substances described in Tables 1 to 8 are used.

[0473] In addition, in the non-aqueous electrolyte batteries of the examples and comparative examples in Tables 9 to 16, NCM811 was used as the positive electrode and silicon-containing graphite was used as the negative electrode, and the non-aqueous electrolyte batteries were prepared in the same manner as the non-aqueous electrolyte batteries of the examples and comparative examples in Tables 1 to 8. It should be noted that the substances described in Tables 9 to 16 were used as non-aqueous electrolytes.

[0474] 〔evaluate〕

[0475] - Initial charge and discharge -

[0476] The prepared non-aqueous electrolyte battery was placed in a 25°C constant temperature chamber and connected to a charge and discharge device. Charged at 3 mA to 4.3 V. After maintaining 4.3 V for 1 hour, discharged at 6 mA to 2.7 V. This was considered one charge and discharge cycle, and a total of three cycles of charge and discharge were performed to stabilize the battery.

[0477] <Initial resistance measurement>

[0478] After the initial charge and discharge, the battery was charged to 4.3 V at 25° C. and 6 mA, and the resistance value was measured directly by impedance measurement.

[0479] In each of Tables 1 to 16, the initial resistance value of the comparative examples (Comparative Example 1-1 in Table 1, Comparative Example 2-1 in Table 2, Comparative Example 3-1 in Table 3, Comparative Example 4-1 in Table 4, Comparative Example 5-1 in Table 5, Comparative Example 6-1 in Table 6, Comparative Example 7-1 in Table 7, Comparative Example 8-1 in Table 8, Comparative Example 9-1 in Table 9, Comparative Example 10-1 in Table 10, Comparative Example 11-1 in Table 11, Comparative Example 12-1 in Table 12, Comparative Example 13-1 in Table 13, Comparative Example 14-1 in Table 14, Comparative Example 15-1 in Table 15, and Comparative Example 16-1 in Table 16) using comparative non-aqueous electrolyte solutions to which no component (I) or comparative compound was added was set as 100, and the evaluation results of the initial resistance of each Example and Comparative Example are shown as relative values.

[0480] [Table 1]

[0481]

[0482] [Table 2]

[0483]

[0484] [Table 3]

[0485]

[0486] [Table 4]

[0487]

[0488] [Table 5]

[0489]

[0490] [Table 6]

[0491]

[0492] [Table 7]

[0493]

[0494] [Table 8]

[0495]

[0496] [Table 9]

[0497]

[0498] [Table 10]

[0499]

[0500] [Table 11]

[0501]

[0502] [Table 12]

[0503]

[0504] [Table 13]

[0505]

[0506] [Table 14]

[0507]

[0508] [Table 15]

[0509]

[0510] [Table 16]

[0511]

[0512] As is clear from Tables 1 to 16, the nonaqueous electrolyte battery using the nonaqueous electrolyte solution containing the component (I) of the present disclosure has low and excellent initial resistance.

[0513] Industrial Applicability

[0514] According to the present disclosure, a nonaqueous electrolyte and a nonaqueous electrolyte battery capable of reducing initial resistance can be provided. In addition, a compound that can be suitably used in the nonaqueous electrolyte can be provided.

[0515] Although the present disclosure has been described in detail and with reference to specific embodiments, it will be apparent to one skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the present disclosure.

[0516] This application is based on the Japanese patent application (Japanese Patent Application No. 2022-110786) filed on July 8, 2022 and the Japanese patent application (Japanese Patent Application No. 2022-165369) filed on October 14, 2022, the contents of which are incorporated into this application as reference.

Claims

1. A non-aqueous electrolyte solution comprising: (I) at least one selected from the group consisting of a compound represented by the following general formula (1), a compound represented by the following general formula (2), a compound represented by the following general formula (3), a compound represented by the following general formula (4-1), a compound represented by the following general formula (4-2), a compound represented by the following general formula (4-3), a compound represented by the following general formula (5) and a compound represented by the following general formula (6); (II) a solute; and (III) a non-aqueous organic solvent, In the general formula (1), X 1 represents CH2, NH, O, S or SO2, Y 1 Indicates CH or N, Z 1 Indicates CH2, O or NR 5 , R 5 represents a hydrogen atom, an alkali metal cation, or a linear or branched alkyl group having 1 to 12 carbon atoms, wherein an oxygen atom may be contained between carbon-carbon bonds in the alkyl group, and any hydrogen atom of the alkyl group may be substituted with a fluorine atom, and R 5 In the case of an alkali metal cation, the nitrogen atom is 5 The bond represents an ionic bond, R 1 Represents PO(R f )2 or SO2R f , R f represents a halogen atom, a linear or branched alkyl group having 1 to 12 carbon atoms, a linear or branched alkenyl group having 3 to 12 carbon atoms, or a linear or branched alkynyl group having 2 to 12 carbon atoms or 4 to 12 carbon atoms, wherein at least one of an oxygen atom and a nitrogen atom is optionally contained between carbon atom-carbon atom bonds in the alkyl group, the alkenyl group or the alkynyl group, and any hydrogen atom of the alkyl group, the alkenyl group or the alkynyl group is optionally substituted with a fluorine atom, and there are a plurality of R f In the case of multiple R f Optional same or different, n 1 is an integer from 1 to 3, R 2 , R 3 and R 4 Each independently represents a hydrogen atom or a linear or branched alkyl group having 1 to 12 carbon atoms, wherein an oxygen atom is optionally contained between carbon-carbon bonds in the alkyl group, and any hydrogen atom of the alkyl group is optionally substituted with a fluorine atom. 4 In the case of multiple R 4 Optional same or different, In the general formula (2), Y 2 and Y 3 Each independently represents CH or N, Z 2 and Z 3 Each independently represents CH2, O or NR 11 , R 11 represents a hydrogen atom, an alkali metal cation, or a linear or branched alkyl group having 1 to 12 carbon atoms, wherein an oxygen atom may be contained between carbon-carbon bonds in the alkyl group, and any hydrogen atom of the alkyl group may be substituted with a fluorine atom, and R 11 In the case of an alkali metal cation, the nitrogen atom is 11 The bond represents an ionic bond, R 6 and R 7 Each independently represents PO(R f )2 or SO2R f , R f represents a halogen atom, a linear or branched alkyl group having 1 to 12 carbon atoms, a linear or branched alkenyl group having 3 to 12 carbon atoms, or a linear or branched alkynyl group having 2 to 12 carbon atoms or 4 to 12 carbon atoms, wherein at least one of an oxygen atom and a nitrogen atom is optionally contained between carbon atom-carbon atom bonds in the alkyl group, the alkenyl group or the alkynyl group, and any hydrogen atom of the alkyl group, the alkenyl group or the alkynyl group is optionally substituted with a fluorine atom, and there are a plurality of R f In the case of multiple R f Optional same or different, n 2 is an integer from 1 to 3, R 8 , R 9 and R 10 Each independently represents a hydrogen atom or a linear or branched alkyl group having 1 to 12 carbon atoms, wherein an oxygen atom is optionally contained between carbon-carbon bonds in the alkyl group, and any hydrogen atom of the alkyl group is optionally substituted with a fluorine atom. 10 In the case of multiple R 10 Optional same or different, In the general formula (3), Y 4 and Y 5 Each independently represents CH or N, Z 4 Indicates CH2, O or NR 17 , R 17 represents a hydrogen atom, an alkali metal cation, or a linear or branched alkyl group having 1 to 12 carbon atoms, wherein an oxygen atom may be contained between carbon-carbon bonds in the alkyl group, and any hydrogen atom of the alkyl group may be substituted with a fluorine atom, and R 17 In the case of an alkali metal cation, the nitrogen atom is 17 The bond of represents an ionic bond, R 12 Represents PO(R f )2 or SO2R f , R f represents a halogen atom, a linear or branched alkyl group having 1 to 12 carbon atoms, a linear or branched alkenyl group having 3 to 12 carbon atoms, or a linear or branched alkynyl group having 2 to 12 carbon atoms or 4 to 12 carbon atoms, wherein at least one of an oxygen atom and a nitrogen atom is optionally contained between carbon atom-carbon atom bonds in the alkyl group, the alkenyl group or the alkynyl group, and any hydrogen atom of the alkyl group, the alkenyl group or the alkynyl group is optionally substituted with a fluorine atom, and there are a plurality of R f In the case of multiple R f Optional same or different, R 13 represents a halogen atom or a linear or branched alkyl group having 1 to 12 carbon atoms, wherein an oxygen atom may be contained between carbon-carbon bonds in the alkyl group, and any hydrogen atom of the alkyl group may be substituted with a fluorine atom, n 3 is an integer from 0 to 3, R 14 , R 15 and R 16 Each independently represents a hydrogen atom or a linear or branched alkyl group having 1 to 12 carbon atoms, wherein an oxygen atom is optionally contained between carbon-carbon bonds in the alkyl group, and any hydrogen atom of the alkyl group is optionally substituted with a fluorine atom. 16 In the case of multiple R 16 Optional same or different, it should be noted that n 3 When R is 0, 16 Does not exist, R 15 The carbon atom bonded to Y 5 Direct bonding, In the general formula (4-1), X 2 and X 3 Each independently represents CH2, NH, O or S, Y 6 Indicates CH or N, Z 5 Indicates CH2, O or NR 23 , R 23 represents a hydrogen atom, an alkali metal cation, or a linear or branched alkyl group having 1 to 12 carbon atoms, wherein an oxygen atom may be contained between carbon-carbon bonds in the alkyl group, and any hydrogen atom of the alkyl group may be substituted with a fluorine atom, and R 23 In the case of an alkali metal cation, the nitrogen atom is 23 The bond represents an ionic bond, R 18 Represents PO(R f )2 or SO2R f , R f represents a halogen atom, a linear or branched alkyl group having 1 to 12 carbon atoms, a linear or branched alkenyl group having 3 to 12 carbon atoms, or a linear or branched alkynyl group having 2 to 12 carbon atoms or 4 to 12 carbon atoms, wherein at least one of an oxygen atom and a nitrogen atom is optionally contained between carbon atom-carbon atom bonds in the alkyl group, the alkenyl group or the alkynyl group, and any hydrogen atom of the alkyl group, the alkenyl group or the alkynyl group is optionally substituted with a fluorine atom, and there are a plurality of R f In the case of multiple R f Optional same or different, In the general formula (4-2), X 2 and X 3 Each independently represents CH2, NH, O or S, Y 6 Indicates CH or N, Z 5 Indicates CH2, O or NR 23 , R 23 represents a hydrogen atom, an alkali metal cation, or a linear or branched alkyl group having 1 to 12 carbon atoms, wherein an oxygen atom may be contained between carbon-carbon bonds in the alkyl group, and any hydrogen atom of the alkyl group may be substituted with a fluorine atom, and R 23 In the case of an alkali metal cation, the nitrogen atom is 23 The bond represents an ionic bond, R 18 Represents PO(R f )2 or SO2R f , R f represents a halogen atom, a linear or branched alkyl group having 1 to 12 carbon atoms, a linear or branched alkenyl group having 3 to 12 carbon atoms, or a linear or branched alkynyl group having 2 to 12 carbon atoms or 4 to 12 carbon atoms, wherein at least one of an oxygen atom and a nitrogen atom is optionally contained between carbon atom-carbon atom bonds in the alkyl group, the alkenyl group or the alkynyl group, and any hydrogen atom of the alkyl group, the alkenyl group or the alkynyl group is optionally substituted with a fluorine atom, and there are a plurality of R f In the case of multiple R f Optional same or different, R 19 represents a halogen atom, a hydrogen atom, or a linear or branched alkyl group having 1 to 12 carbon atoms, wherein an oxygen atom may be contained between carbon-carbon bonds in the alkyl group, and any hydrogen atom of the alkyl group may be substituted by a fluorine atom, In the general formula (4-3), X 2 and X 3 Each independently represents CH2, NH, O or S, Y 6 Indicates CH or N, Z 5 Indicates CH2, O or NR 23 , R 23 represents a hydrogen atom, an alkali metal cation, or a linear or branched alkyl group having 1 to 12 carbon atoms, wherein an oxygen atom may be contained between carbon-carbon bonds in the alkyl group, and any hydrogen atom of the alkyl group may be substituted with a fluorine atom, and R 23 In the case of an alkali metal cation, the nitrogen atom is 23 The bond represents an ionic bond, R 18 Represents PO(R f )2 or SO2R f , R f represents a halogen atom, a linear or branched alkyl group having 1 to 12 carbon atoms, a linear or branched alkenyl group having 3 to 12 carbon atoms, or a linear or branched alkynyl group having 2 to 12 carbon atoms or 4 to 12 carbon atoms, wherein at least one of an oxygen atom and a nitrogen atom is optionally contained between carbon atom-carbon atom bonds in the alkyl group, the alkenyl group or the alkynyl group, and any hydrogen atom of the alkyl group, the alkenyl group or the alkynyl group is optionally substituted with a fluorine atom, and there are a plurality of R f In the case of multiple R f Optional same or different, n 4 is 0 or 1, R 20 , R 21 and R 22 Each independently represents a halogen atom, a hydrogen atom, or a linear or branched alkyl group having 1 to 12 carbon atoms, wherein an oxygen atom may be contained between carbon-carbon atom bonds in the alkyl group, and any hydrogen atom of the alkyl group may be substituted by a fluorine atom. It should be noted that n 4 When R is 0, 21 Does not exist, R 20 The carbon atom bonded to R 22 The bonded carbon atoms are directly bonded, In the general formula (5), X 4 represents CH2, NH, O or S, Y 7 Indicates CH or N, Z 6 Indicates CH2, O or NR 27 , R 27 represents a hydrogen atom, an alkali metal cation, or a linear or branched alkyl group having 1 to 12 carbon atoms, wherein an oxygen atom may be contained between carbon-carbon bonds in the alkyl group, and any hydrogen atom of the alkyl group may be substituted with a fluorine atom, and R 27 In the case of an alkali metal cation, the nitrogen atom is 27 The bond represents an ionic bond, R 24 Represents PO(R f )2 or SO2R f , R f represents a halogen atom, a linear or branched alkyl group having 1 to 12 carbon atoms, a linear or branched alkenyl group having 3 to 12 carbon atoms, or a linear or branched alkynyl group having 2 to 12 carbon atoms or 4 to 12 carbon atoms, wherein at least one of an oxygen atom and a nitrogen atom is optionally contained between carbon atom-carbon atom bonds in the alkyl group, the alkenyl group or the alkynyl group, and any hydrogen atom of the alkyl group, the alkenyl group or the alkynyl group is optionally substituted with a fluorine atom, and there are a plurality of R f In the case of multiple R f Optional same or different, R 25 and R 26 each independently represents a halogen atom, a hydrogen atom, a nitro group, or a linear or branched alkyl group having 1 to 12 carbon atoms, wherein an oxygen atom may be contained between carbon-carbon bonds in the alkyl group, and any hydrogen atom of the alkyl group may be substituted by a fluorine atom, In the general formula (6), R 28 represents a halogen atom or a linear or branched alkyl group having 1 to 12 carbon atoms, wherein an oxygen atom may be contained between carbon-carbon bonds in the alkyl group, and any hydrogen atom of the alkyl group may be substituted with a fluorine atom, R 29 and R 31 Each independently represents a halogen atom, a hydrogen atom, or a linear or branched alkyl group having 1 to 12 carbon atoms, wherein an oxygen atom may be contained between carbon-carbon bonds in the alkyl group, and any hydrogen atom of the alkyl group may be substituted by a fluorine atom, R 30 and R 32 Each independently represents a hydrogen atom, a straight-chain or branched-chain alkyl group having 1 to 12 carbon atoms, a straight-chain or branched-chain alkenyl group having 3 to 12 carbon atoms, or a straight-chain or branched-chain alkynyl group having 2 to 12 carbon atoms, or a straight-chain or branched-chain alkynyl group having 4 to 12 carbon atoms, and at least one of an oxygen atom and a nitrogen atom is optionally contained between carbon atom-carbon atom bonds in the alkyl group, the alkenyl group or the alkynyl group, and the alkyl group, the alkenyl group or the alkynyl group optionally contains a carbon-nitrogen unsaturated bond, and any hydrogen atom of the alkyl group, the alkenyl group or the alkynyl group is optionally substituted by a fluorine atom.

2. The nonaqueous electrolyte according to claim 1, wherein The (I) is at least one selected from the group consisting of the compound represented by the general formula (2), the compound represented by the general formula (3), the compound represented by the general formula (4-1), the compound represented by the general formula (4-2) and the compound represented by the general formula (5).

3. The nonaqueous electrolyte according to claim 1, wherein In the general formula (1), R 1 Indicates POF2 or SO2F.

4. The nonaqueous electrolyte according to claim 1 or 2, wherein In the general formula (2), R 6 and R 7 Each independently represents POF2 or SO2F.

5. The non-aqueous electrolyte according to claim 1 or 2, wherein In the general formula (3), R 12 Indicates POF2 or SO2F.

6. The nonaqueous electrolyte according to claim 1 or 2, wherein R in the general formula (4-1), (4-2), or (4-3) 18 Indicates POF2 or SO2F.

7. The nonaqueous electrolyte according to claim 1 or 2, wherein In the general formula (5), R 24 Indicates POF2 or SO2F.

8. The non-aqueous electrolyte according to claim 1, wherein In the general formula (6), R 28 A fluorine atom.

9. The nonaqueous electrolyte according to claim 1 or 3, wherein In the general formula (1), R 5 It represents a hydrogen atom, a lithium ion, a sodium ion, or a linear or branched alkyl group having 1 to 4 carbon atoms.

10. The nonaqueous electrolyte according to claim 1 or 2, wherein In the general formula (2), R 11 It represents a hydrogen atom, a lithium ion, a sodium ion, or a linear or branched alkyl group having 1 to 4 carbon atoms.

11. The nonaqueous electrolyte according to claim 1 or 2, wherein In the general formula (3), R 17 It represents a hydrogen atom, a lithium ion, a sodium ion, or a linear or branched alkyl group having 1 to 4 carbon atoms.

12. The nonaqueous electrolyte according to claim 1 or 2, wherein R in the general formula (4-1), (4-2) or (4-3) 23 It represents a hydrogen atom, a lithium ion, a sodium ion, or a linear or branched alkyl group having 1 to 4 carbon atoms.

13. The nonaqueous electrolyte according to claim 1 or 2, wherein In the general formula (5), R 27 It represents a hydrogen atom, a lithium ion, a sodium ion, or a linear or branched alkyl group having 1 to 4 carbon atoms.

14. The non-aqueous electrolyte according to claim 1 or 2, wherein The solute is at least one selected from the group consisting of LiPF6, LiBF4, LiSbF6, LiAsF6, LiClO4, LiCF3SO3, LiC4F9SO3, LiN(SO2F)2, LiAlO2, LiAlCl4, LiCl and LiI, or at least one selected from the group consisting of NaPF6, NaBF4, NaSbF6, NaAsF6, NaClO4, NaCF3SO3, NaC4F9SO3, NaN(SO2F)2, NaAlO2, NaAlCl4, NaCl and NaI.

15. The non-aqueous electrolyte according to claim 1 or 2, wherein The nonaqueous organic solvent includes at least one selected from the group consisting of cyclic esters, chain esters, cyclic ethers, chain ethers, sulfone compounds, sulfoxide compounds, and ionic liquids.

16. The non-aqueous electrolyte according to claim 15, wherein The cyclic ester is a cyclic carbonate.

17. The non-aqueous electrolyte according to claim 16, wherein The cyclic carbonate is at least one selected from the group consisting of ethylene carbonate, propylene carbonate, and fluoroethylene carbonate.

18. The non-aqueous electrolyte according to claim 15, wherein The chain ester is a chain carbonate.

19. The non-aqueous electrolyte according to claim 18, wherein The chain carbonate is at least one selected from the group consisting of ethyl methyl carbonate, dimethyl carbonate, diethyl carbonate, and methyl propyl carbonate.

20. The non-aqueous electrolyte according to claim 1 or 2, wherein The content of (I) is 0.01 to 10.0% by mass based on the total amount of the non-aqueous electrolyte.

21. The non-aqueous electrolyte according to claim 1 or 2, further comprising a difluorobenzene carbonate selected from the group consisting of vinylene carbonate, bis(oxalato)borate, difluorooxalatoborate, difluorobis(oxalato)phosphate, tetrafluorooxalatophosphate, tetrafluoro(malonate)phosphate, (difluorophosphoryl)(fluorosulfonyl)imide salt, difluorophosphate, fluorosulfonate, 1,3-propylene sultone, 1,3-propane sultone, 1,6-diisocyanatohexane, ethynylethylene carbonate, 1,3,2-dioxathiolane-2,2 -dioxide, 4-propyl-1,3,2-dioxathiolane-2,2-dioxide, methanedisulfonic acid methylene ester, 1,2-ethanedisulfonic anhydride, methylsulfonyl fluoride, tris(trimethylsilyl)borate, (ethoxy)pentafluorocyclotriphosphazene, tetrafluoro(picolinic acid)phosphate, 1,3-dimethyl-1,3-divinyl-1,3-bis(1,1,1,3,3,3-hexafluoroisopropyl)disiloxane, tert-butylbenzene, tert-amylbenzene, fluorobenzene and cyclohexylbenzene.

22. A non-aqueous electrolyte battery, comprising at least: a positive electrode, a negative electrode, a separator and the non-aqueous electrolyte according to claim 1 or 2.

23. A compound represented by the following general formula (1), In the general formula (1), X 1 represents CH2, NH, O, S or SO2, Y 1 Indicates CH or N, Z 1 Indicates CH2, O or NR 5 , R 5 represents a hydrogen atom, an alkali metal cation, or a linear or branched alkyl group having 1 to 12 carbon atoms, wherein an oxygen atom may be contained between carbon-carbon bonds in the alkyl group, and any hydrogen atom of the alkyl group may be substituted with a fluorine atom, and R 5 In the case of an alkali metal cation, the nitrogen atom is 5 The bond represents an ionic bond, R 1 Indicates POF2 or SO2F, n 1 is an integer from 1 to 3, R 2 , R 3 and R 4 Each independently represents a hydrogen atom or a linear or branched alkyl group having 1 to 12 carbon atoms, wherein an oxygen atom is optionally contained between carbon-carbon bonds in the alkyl group, and any hydrogen atom of the alkyl group is optionally substituted with a fluorine atom. 4 In the case of multiple R 4 Optional same or different.

24. A compound represented by the following general formula (2), In the general formula (2), Y 2 and Y 3 Each independently represents CH or N, Z 2 and Z 3 Each independently represents CH2, O or NR 11 , R 11 represents a hydrogen atom, an alkali metal cation, or a linear or branched alkyl group having 1 to 12 carbon atoms, wherein an oxygen atom may be contained between carbon-carbon bonds in the alkyl group, and any hydrogen atom of the alkyl group may be substituted with a fluorine atom, and R 11 In the case of an alkali metal cation, the nitrogen atom is 11 The bond represents an ionic bond, R 6 and R 7 Each independently represents POF2 or SO2F, n 2 is an integer from 1 to 3, R 8 , R 9 and R 10 Each independently represents a hydrogen atom or a linear or branched alkyl group having 1 to 12 carbon atoms, wherein an oxygen atom is optionally contained between carbon-carbon bonds in the alkyl group, and any hydrogen atom of the alkyl group is optionally substituted with a fluorine atom. 10 In the case of multiple R 10 Optional same or different.

25. A compound represented by the following general formula (3), In the general formula (3), Y 4 and Y 5 Each independently represents CH or N, Z 4 Indicates CH2, O or NR 17 , R 17 represents a hydrogen atom, an alkali metal cation, or a linear or branched alkyl group having 1 to 12 carbon atoms, wherein an oxygen atom may be contained between carbon-carbon bonds in the alkyl group, and any hydrogen atom of the alkyl group may be substituted with a fluorine atom, and R 17 In the case of an alkali metal cation, the nitrogen atom is 17 The bond represents an ionic bond, R 12 Indicates POF2 or SO2F, R 13 represents a halogen atom or a linear or branched alkyl group having 1 to 12 carbon atoms, wherein an oxygen atom may be contained between carbon-carbon bonds in the alkyl group, and any hydrogen atom of the alkyl group may be substituted with a fluorine atom, n 3 is an integer from 0 to 3, R 14 , R 15 and R 16 Each independently represents a hydrogen atom or a linear or branched alkyl group having 1 to 12 carbon atoms, wherein an oxygen atom is optionally contained between carbon-carbon bonds in the alkyl group, and any hydrogen atom of the alkyl group is optionally substituted with a fluorine atom. 16 In the case of multiple R 16 Optional same or different, it should be noted that n 3 When R is 0, 16 Does not exist, R 15 The carbon atom bonded to Y 5 Direct bonding.

26. A compound represented by the following general formula (4-1), the following general formula (4-2) or the following general formula (4-3), In the general formula (4-1), X 2 and X 3 Each independently represents CH2, NH, O or S, Y 6 Indicates CH or N, Z 5 Indicates CH2, O or NR 23 , R 23 represents a hydrogen atom, an alkali metal cation, or a linear or branched alkyl group having 1 to 12 carbon atoms, wherein an oxygen atom may be contained between carbon-carbon bonds in the alkyl group, and any hydrogen atom of the alkyl group may be substituted with a fluorine atom, and R 23 In the case of an alkali metal cation, the nitrogen atom is 23 The bond represents an ionic bond, R 18 Indicates POF2 or SO2F, In the general formula (4-2), X 2 and X 3 Each independently represents CH2, NH, O or S, Y 6 Indicates CH or N, Z 5 Indicates CH2, O or NR 23 , R 23 represents a hydrogen atom, an alkali metal cation, or a linear or branched alkyl group having 1 to 12 carbon atoms, wherein an oxygen atom may be contained between carbon-carbon bonds in the alkyl group, and any hydrogen atom of the alkyl group may be substituted with a fluorine atom, and R 23 In the case of an alkali metal cation, the nitrogen atom is 23 The bond represents an ionic bond, R 18 Indicates POF2 or SO2F, R 19 represents a halogen atom, a hydrogen atom, or a linear or branched alkyl group having 1 to 12 carbon atoms, wherein an oxygen atom may be contained between carbon-carbon bonds in the alkyl group, and any hydrogen atom of the alkyl group may be substituted by a fluorine atom, In the general formula (4-3), X 2 and X 3 Each independently represents CH2, NH, O or S, Y 6 Indicates CH or N, Z 5 Indicates CH2, O or NR 23 , R 23 represents a hydrogen atom, an alkali metal cation, or a linear or branched alkyl group having 1 to 12 carbon atoms, wherein an oxygen atom may be contained between carbon-carbon bonds in the alkyl group, and any hydrogen atom of the alkyl group may be substituted with a fluorine atom, and R 23 In the case of an alkali metal cation, the nitrogen atom is 23 The bond represents an ionic bond, R 18 Indicates POF2 or SO2F, n 4 is 0 or 1, R 20 , R 21 and R 22 Each independently represents a halogen atom, a hydrogen atom, or a linear or branched alkyl group having 1 to 12 carbon atoms, wherein an oxygen atom may be contained between carbon-carbon atom bonds in the alkyl group, and any hydrogen atom of the alkyl group may be substituted by a fluorine atom. It should be noted that n 4 When R is 0, 21 Does not exist, R 20 The carbon atom bonded to R 22 The bonded carbon atoms are directly bonded.

27. A compound represented by the following general formula (5), In the general formula (5), X 4 Indicates CH2, NH or O, Y 7 Indicates CH or N, Z 6 Indicates CH2, O or R 27 , R 27 represents a hydrogen atom, an alkali metal cation, or a linear or branched alkyl group having 1 to 12 carbon atoms, wherein an oxygen atom may be contained between carbon-carbon bonds in the alkyl group, and any hydrogen atom of the alkyl group may be substituted with a fluorine atom, and R 27 In the case of an alkali metal cation, the nitrogen atom is 27 The bond represents an ionic bond, R 24 Indicates POF2 or SO2F, R 25 and R 26 Each independently represents a halogen atom, a hydrogen atom, a nitro group or a linear or branched alkyl group having 1 to 12 carbon atoms or 3 to 12 carbon atoms, wherein an oxygen atom may be contained between carbon-carbon atom bonds in the alkyl group, and any hydrogen atom of the alkyl group may be substituted by a fluorine atom.

28. A compound represented by the following general formula (6), In the general formula (6), R 28 represents a fluorine atom, R 29 and R 31 Each independently represents a halogen atom, a hydrogen atom, or a linear or branched alkyl group having 1 to 12 carbon atoms, wherein an oxygen atom may be contained between carbon-carbon bonds in the alkyl group, and any hydrogen atom of the alkyl group may be substituted by a fluorine atom, R 30 and R 32 Each independently represents a hydrogen atom, a straight-chain or branched-chain alkyl group having 1 to 12 carbon atoms, a straight-chain or branched-chain alkenyl group having 3 to 12 carbon atoms, or a straight-chain or branched-chain alkynyl group having 2 to 12 carbon atoms, or a straight-chain or branched-chain alkynyl group having 4 to 12 carbon atoms, and at least one of an oxygen atom and a nitrogen atom is optionally contained between carbon atom-carbon atom bonds in the alkyl group, the alkenyl group or the alkynyl group, and the alkyl group, the alkenyl group or the alkynyl group optionally contains a carbon-nitrogen unsaturated bond, and any hydrogen atom of the alkyl group, the alkenyl group or the alkynyl group is optionally substituted by a fluorine atom.

Images