Electrolyte solution, electrochemical device, lithium ion secondary battery, and module

Patent metadata

Field	Value
Publication number	US-2016293997-A1
Application number	US-201415034378-A
Country	US
Kind code	A1
Filing date	Dec 3, 2014
Priority date	Dec 5, 2013
Publication date	Oct 6, 2016
Grant date	—

Abstract

An electrolyte solution including a solvent, an electrolyte salt, and at least one compound (α) selected from an amine (A) represented by the formula (A):

(wherein R 1 and R 2 may be the same as or different from each other, and individually represent a C1-C7 alkyl group; Rf 1 represents a C1-C7 fluorinated alkyl group), and an amide (B) represented by the formula (B):

(wherein R 3 , R 4 , and R 5 may be the same as or different from each other, and individually represent a C1-C7 alkyl group). The amount of the compound (α) is 0.001 to 20 ppm in the electrolyte solution.

First claim

1 . An electrolyte solution comprising
a solvent, an electrolyte salt, and at least one compound (α) selected from the group consisting of:
an amine (A) represented by the following formula (A):

wherein R 1 and R 2 may be the same as or different from each other, and individually represent a C1-C7 alkyl group; and Rf 1 represents a C1-C7 fluorinated alkyl group, and
an amide (B) represented by the following formula (B):

wherein R 3 , R 4 , and R 5 may be the same as or different from each other, and individually represent a C1-C7 alkyl group,
the electrolyte solution containing 0.001 to 20 ppm of the compound (α).

2 . An electrochemical device comprising the electrolyte solution according to claim 1 .

3 . A lithium ion secondary battery comprising the electrolyte solution according to claim 1 .

4 . A module comprising the electrochemical device according to claim 2 .

5 . A module comprising the lithium ion secondary battery according to claim 3 .

Assignees

• Daikin Ind Ltd

Inventors

• Yamauchi Akiyoshi
• Kinoshita Shinichi

Classifications

• H01M10/056 Primary

  characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes · CPC title

• H01M10/0565

  Polymeric materials, e.g. gel-type or solid-type · CPC title

• H01G11/64

  characterised by additives · CPC title

• H01M10/0525

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

• Y02E60/10

  Energy storage using batteries · CPC title