Nonaqueous electrolyte secondary battery porous layer

Patent metadata

Field	Value
Publication number	US-2019386277-A1
Application number	US-201916441060-A
Country	US
Kind code	A1
Filing date	Jun 14, 2019
Priority date	Jun 15, 2018
Publication date	Dec 19, 2019
Grant date	—

Abstract

To provide a nonaqueous electrolyte secondary battery porous layer that allows a nonaqueous electrolyte secondary battery to have improved battery characteristics, a nonaqueous electrolyte secondary battery porous layer includes a filler including a benzendiol-aldehyde resin modified with a monomer having a particular structure.

First claim

1 . A nonaqueous electrolyte secondary battery porous layer, comprising:
a filler including a benzendiol-aldehyde resin modified with a monomer represented by Formula (1),

where R 1 to R 3 are each independently a hydrogen atom, a hydroxyl group, a carboxyl group, or a hydrocarbon group having 1 to 20 carbon atoms,
the monomer represented by Formula (1) being other than a compound of which one of R 1 to R 3 is a hydroxyl group and remaining two of R 1 to R 3 are each a hydrogen atom.

2 . The nonaqueous electrolyte secondary battery porous layer according to claim 1 , wherein
the filler has a content of not less than 60% by weight and not more than 99.5% by weight with respect to a total weight of the nonaqueous electrolyte secondary battery porous layer.

3 . The nonaqueous electrolyte secondary battery porous layer according to claim 1 , further comprising:
at least one binder resin selected from the group consisting of a polyolefin, a (meth)acrylate-based resin, a fluorine-containing resin, a polyamide-based resin, a polyester-based resin, and a water-soluble polymer.

4 . The nonaqueous electrolyte secondary battery porous layer according to claim 3 , wherein
the polyamide-based resin is aramid resin.

5 . A nonaqueous electrolyte secondary battery laminated separator, comprising:
a polyolefin porous film; and a nonaqueous electrolyte secondary battery porous layer according to claim 1 , the nonaqueous electrolyte secondary battery porous layer being provided on at least one surface of the polyolefin porous film.

6 . A nonaqueous electrolyte secondary battery member, comprising:
a positive electrode; a nonaqueous electrolyte secondary battery porous layer according to claim 1 ; and a negative electrode, the positive electrode, the nonaqueous electrolyte secondary battery porous layer, and the negative electrode being arranged in this order.

7 . A nonaqueous electrolyte secondary battery, comprising:
a nonaqueous electrolyte secondary battery porous layer according to claim 1 .

8 . A nonaqueous electrolyte secondary battery member, comprising:
a positive electrode; a nonaqueous electrolyte secondary battery laminated separator according to claim 5 ; and a negative electrode, the positive electrode, the nonaqueous electrolyte secondary battery laminated separator, and the negative electrode being arranged in this order.

9 . A nonaqueous electrolyte secondary battery, comprising:
a nonaqueous electrolyte secondary battery laminated separator according to claim 5 .

Assignees

• Sumitomo Chemical Co

Inventors

• Kurakane Kosuke
• Suzuki Junji

Classifications

• C08G8/22

  Resorcinol · CPC title

• C08L77/10

  Polyamides derived from aromatically bound amino and carboxyl groups of amino-carboxylic acids or of polyamines and polycarboxylic acids · CPC title

• C08G8/24 Primary

  with mixtures of two or more phenols which are not covered by only one of the groups C08G8/10 - C08G8/20 · CPC title

• H01M2/1686

  Electricity · mapped topic

• H01M2/1653 Primary

  Electricity · mapped topic