Additive for nonaqueous electrolyte solutions, nonaqueous electrolyte solution, and electricity storage device

Patent metadata

Field	Value
Publication number	US-12074286-B2
Application number	US-201917041341-A
Country	US
Kind code	B2
Filing date	Jan 22, 2019
Priority date	Mar 30, 2018
Publication date	Aug 27, 2024
Grant date	Aug 27, 2024

Abstract

Disclosed is an additive for nonaqueous electrolyte solutions, including a compound represented by Formula (1a) or (1b).In Formulae (1a) and (1b), Z represents a monovalent group represented by Formula (2a), (2b), or (2c).

First claim

The invention claimed is:

1. An additive for nonaqueous electrolyte solutions comprising a compound represented by the following formula (1a) or (1b):

wherein in Formulae (1a) and (1b), X represents an alkylene group having 3 to 7 carbon atoms without substitution, or an alkenylene group having 3 to 7 carbon atoms, which may be substituted, each of which constitutes a cyclic structure together with the sulfur atom of a sulfonyl group, n represents an integer of 1 to 7, Z represents a monovalent group represented by Formula (2a), and m represents 0 or 1:

wherein R 2a represents an alkyl group having 1 to 4 carbon atoms, which may be substituted, an alkenyl group having 2 to 4 carbon atoms, which may be substituted, an alkynyl group having 2 to 4 carbon atoms, which may be substituted, an aryl group which may be substituted, an alkoxy group having 1 to 4 carbon atoms, which may be substituted, an alkenyloxy group having 2 to 4 carbon atoms, which may be substituted, an alkynyloxy group having 2 to 4 carbon atoms, which may be substituted, an aryloxy group which may be substituted, a hydroxyl group, a lithium alcoholate group, or a lithium atom.

2. A nonaqueous electrolyte solution comprising:
an additive for nonaqueous electrolyte solutions;
a nonaqueous solvent; and
an electrolyte,
wherein the additive for nonaqueous electrolyte solutions comprises a compound represented by the following formula (1a) or (1b):

in Formulae (1a) and (1b), X represents an alkylene group having 3 to 7 carbon atoms which may be substituted, or an alkenylene group having 3 to 7 carbon atoms, which may be substituted, each of which constitutes a cyclic structure together with the sulfur atom of a sulfonyl group, n represents an integer of 1 to 7, Z represents a monovalent group represented by Formula (2a), (2b), or (2c), and m represents 0 or 1:

in Formulae (2a), (2b), and (2c), R 2a , R 2b , and R 2c each independently represent an alkyl group having 1 to 4 carbon atoms, which may be substituted, an alkenyl group having 2 to 4 carbon atoms, which may be substituted, an alkynyl group having 2 to 4 carbon atoms, which may be substituted, an aryl group which may be substituted, an alkoxy group having 1 to 4 carbon atoms, which may be substituted, an alkenyloxy group having 2 to 4 carbon atoms, which may be substituted, an alkynyloxy group having 2 to 4 carbon atoms, which may be substituted, an aryloxy group which may be substituted, a hydroxyl group, a lithium alcoholate group, or a lithium atom, and two R 2c 's in the same molecule may be the same as or different from each other.

3. The nonaqueous electrolyte solution according to claim 2 ,
wherein the nonaqueous solvent includes a cyclic carbonate and a chained carbonate.

4. The nonaqueous electrolyte solution according to claim 2 ,
wherein the electrolyte includes a lithium salt.

5. An electricity storage device comprising:
the nonaqueous electrolyte solution according to claim 2 ;
a positive electrode; and
a negative electrode.

6. A lithium ion battery comprising:
the nonaqueous electrolyte solution according to claim 2 ;
a positive electrode; and
a negative electrode.

7. A lithium ion capacitor comprising:
the nonaqueous electrolyte solution according to claim 2 ;
a positive electrode; and
a negative electrode.

8. A nonaqueous electrolyte solution comprising:
an additive for nonaqueous electrolyte solutions;
a nonaqueous solvent; and
an electrolyte,
wherein the additive for nonaqueous electrolyte solutions comprises a compound represented by the following formula (1a) or (1b):

wherein in Formulae (1a) and (1b), X represents an alkylene group having 3 to 7 carbon atoms without substitution, or an alkenylene group having 3 to 7 carbon atoms, which may be substituted, each of which constitutes a cyclic structure together with the sulfur atom of a sulfonyl group, n represents an integer of 1 to 7, Z represents a monovalent group represented by Formula (2a), (2b), or (2c), and m represents 0 or 1:

in Formulae (2a), (2b), and (2c), R 2a , R 2b , and R 2c each independently represent an alkyl group having 1 to 4 carbon atoms, which may be substituted, an alkenyl group having 2 to 4 carbon atoms, which may be substituted, an alkynyl group having 2 to 4 carbon atoms, which may be substituted, an aryl group which may be substituted, an alkoxy group having 1 to 4 carbon atoms, which may be substituted, an alkenyloxy group having 2 to 4 carbon atoms, which may be substituted, an alkynyloxy group having 2 to 4 carbon atoms, which may be substituted, an aryloxy group which may be substituted, a hydroxyl group, a lithium alcoholate group, or a lithium atom, and two R 2c 's in the same molecule may be the same as or different from each other.

9. The nonaqueous electrolyte solution according to claim 8 ,
wherein the nonaqueous solvent includes a cyclic carbonate and a chained carbonate.

10. The nonaqueous electrolyte solution according to claim 8 ,
wherein the electrolyte includes a lithium salt.

11. An electricity storage device comprising:
the nonaqueous electrolyte solution according to claim 8 ;
a positive electrode; and
a negative electrode.

12. A lithium ion battery comprising:
the nonaqueous electrolyte solution according to claim 8 ;
a positive electrode; and
a negative electrode.

13. A lithium ion capacitor comprising:
the nonaqueous electrolyte solution according to claim 8 ;
a positive electrode; and
a negative electrode.

Assignees

• Sumitomo Seika Chemicals

Inventors

• Kono Yuki
• Takai Yasuyuki
• Fujita Koji

Classifications

• H01M10/0568

  characterised by the solutes · CPC title

• H01M10/4235

  Safety or regulating additives or arrangements in electrodes, separators or electrolyte (H01M10/4242 takes precedence) · CPC title

• H01G11/64

  characterised by additives · CPC title

• H01G11/06 Primary

  with one of the electrodes allowing ions to be reversibly doped thereinto, e.g. lithium ion capacitors [LIC] · CPC title

• H01M2300/0037

  Mixture of solvents · CPC title