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

Patent metadata

Field	Value
Publication number	US-12021191-B2
Application number	US-201816760336-A
Country	US
Kind code	B2
Filing date	Oct 30, 2018
Priority date	Oct 31, 2017
Publication date	Jun 25, 2024
Grant date	Jun 25, 2024

Abstract

Disclosed is an additive for a nonaqueous electrolyte solution, including a compound represented by the following formula (1):in formula (1), X represents a sulfonyl group or a carbonyl group, R1 represents an alkyl group having 1 to 4 carbon atoms, which may be substituted with a halogen atom, a hydroxyl group, or the like, and R2 represents a hydrocarbon group having 1 to 3 carbon atoms, which may be substituted with a halogen atom.

First claim

The invention claimed is:

1. An additive for a nonaqueous electrolyte solution, comprising a compound represented by the following formula (1):

wherein in formula (1),
X represents a sulfonyl group or a carbonyl group,
when X is a sulfonyl group, R 1 represents an alkoxy group having 1 to 4 carbon atoms, which may be substituted with a halogen atom, an alkenyloxy group having 2 to 4 carbon atoms, which may be substituted with a halogen atom, an alkynyloxy group having 2 to 4 carbon atoms, which may be substituted with a halogen atom, an aryloxy group, which may be substituted with a halogen atom, a hydroxyl group, or a lithium oxy group,
when X is a carbonyl group, R 1 represents an alkyl group that has 1 to 4 carbon atoms, which may be substituted with a halogen atom, an alkenyl group having 2 to 4 carbon atoms, which may be substituted with a halogen atom, an alkynyl group having 2 to 4 carbon atoms, which may be substituted with a halogen atom, an aryl group, which may be substituted with a halogen atom, an alkoxy group having 1 to 4 carbon atoms, which may be substituted with a halogen atom, an alkenyloxy group having 2 to 4 carbon atoms, which may be substituted with a halogen atom, an alkynyloxy group having 2 to 4 carbon atoms, which may be substituted with a halogen atom, an aryloxy group, which may be substituted with a halogen atom, a hydroxyl group, or a lithium oxy group, and
R 2 represents a hydrocarbon group having 1 to 3 carbon atoms, which may be substituted with a halogen atom.

2. The additive for a nonaqueous electrolyte solution according to claim 1 ,
wherein the compound represented by formula (1) is a compound represented by the following formula (2):

wherein in formula (2), X and R 1 have the same definitions as X and R 1 , respectively, in formula (1).

3. The additive for a nonaqueous electrolyte solution according to claim 1 ,
wherein X is a sulfonyl group.

4. The additive for a nonaqueous electrolyte solution according to claim 1 ,
wherein X is a carbonyl group, and R 1 is an alkyl group having 1 to 4 carbon atoms, which may be substituted with a halogen atom.

5. A nonaqueous electrolyte solution comprising:
the additive for a nonaqueous electrolyte solution according to claim 1 ;
a nonaqueous solvent; and
an electrolyte.

6. The nonaqueous electrolyte solution according to claim 5 ,
wherein the nonaqueous solvent comprises a cyclic carbonate and a chained carbonate.

7. The nonaqueous electrolyte solution according to claim 5 ,
wherein the electrolyte is an electrolyte comprising a lithium salt.

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

9. The electricity storage device according to claim 8 ,
wherein the electricity storage device is a lithium ion battery.

10. The electricity storage device according to claim 8 ,
wherein the electricity storage device is a lithium ion capacitor.

11. An electricity storage device comprising:
a nonaqueous electrolyte solution;
a positive electrode plate; and
a negative electrode plate,
the positive electrode plate and the negative electrode plate being arranged to face each other via the nonaqueous electrode solution,
wherein the nonaqueous solution comprises a compound represented by the following formula (1):

 wherein in formula (1),
 X represents a sulfonyl group or a carbonyl group,
 when X is a sulfonyl group, R 1 represents a methyl group, an ethyl group, an n-propyl group, an isopropyl group, an n-butyl group, an isobutyl group, a t-butyl group, or a hydroxyl group,
 when X is a carbonyl group, R 1 represents an alkyl group that has 1 to 4 carbon atoms, which may be substituted with a halogen atom, an alkenyl group having 2 to 4 carbon atoms, which may be substituted with a halogen atom, an alkynyl group having 2 to 4 carbon atoms, which may be substituted with a halogen atom, an aryl group which may be substituted with a halogen atom, an alkoxy group having 1 to 4 carbon atoms, which may be substituted with a halogen atom, an alkenyloxy group having 2 to 4 carbon atoms, which may be substituted with a halogen atom, an alkynyloxy group having 2 to 4 carbon atoms, which may be substituted with a halogen atom, an aryloxy group which may be substituted with a halogen atom, a hydroxyl group, or a lithium oxy group, and
 R 2 represents a hydrocarbon group having 1 to 3 carbon atoms, which may be substituted with a halogen atom,
the positive electrode plate comprises a positive electrode collector, and a positive electrode active material layer provided on the inner surface side of the positive electrode collector, and
the positive electrode active material layer comprises:
Li(Ni x Co y Al z )O 2 , wherein x, y, and z are numerical values satisfying 0.5≤x<1, 0.1≤y≤0.4, 0.1≤z≤0.2, and x+y+z=1; or
Li(Ni x Co y M z )O 2 , wherein x, y, and z are numerical values satisfying 0.1≤x<1, 0.1≤y<1, 0.1≤z<1, and x+y+z=1, and M is Mn.

12. An electricity storage device according to claim 11 , wherein in formula (1),
X is a sulfonyl group,
R 1 is a methyl group, and
the positive electrode active material layer comprises
Li(Ni x Co y Al z )O 2 , wherein x, y, and z are numerical values satisfying 0.5≤x<1, 0.1≤y≤0.4, 0.1≤z≤0.2, and x+y+z=1.

13. An electricity storage device according to claim 11 , wherein in formula (1),
X is a sulfonyl group,
R 1 is a methyl group, and
the positive electrode active material layer comprises
Li(Ni x Co y M z )O 2 , wherein x, y, and z are numerical values satisfying 0.1≤x<1, 0.1≤y<1, 0.1≤z<1, and x+y+z=1, and M is Mn.

Assignees

• Sumitomo Seika Chemicals

Inventors

• Kono Yuki
• Takai Yasuyuki
• Yamamoto Noriko
• Fujita Koji

Classifications

• H01M2300/0037

  Mixture of solvents · CPC title

• H01M10/0569

  characterised by the solvents · CPC title

• H01M10/0568

  characterised by the solutes · CPC title

• H01M10/0525 Primary

  Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries · CPC title

• H01G11/64

  characterised by additives · CPC title