# US 2020/0403243 A1 · Binder composition for non-aqueous secondary battery, slurry composition for non-aqueous secondary battery functional layer, functional layer for non-aqueous secondary battery, battery member for non-aqueous secondary battery, and non-aqueous secondary battery

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- Number: US 2020/0403243 A1
- Document ID: US20200403243A1
- Status: Published application
- Kind: A1
- Application number: 16/976,076
- Filed: 2019-02-27
- Published: 2020-12-24
- Earliest claimed: 2018-03-07
- Assignees: Zeon Corporation
- Applicants: Zeon Corporation
- Inventors: Tetsuya AKABANE; Hiroto KIDOKORO
- Web page: https://patentgrep.com/patent/US20200403243A1

## CPC

- H01M 4/622: {being polymers}
- C08K 3/04: Carbon
- C08L 53/005: {Modified block copolymers}
- C08L 53/02: of vinyl-aromatic monomers and conjugated dienes
- H01M 4/0404: {by coating on electrode collectors}
- H01M 4/13: Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
- H01M 4/139: Processes of manufacture
- H01M 4/366: {as layered products}
- H01M 10/0525: Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
- Y02E 60/10: Energy storage using batteries
- H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- C08K: Use of inorganic or non-macromolecular organic substances as compounding ingredients (paints, inks, varnishes, dyes, polishes, adhesives C09)
- C08L: COMPOSITIONS OF MACROMOLECULAR COMPOUNDS (compositions based on polymerisable monomers C08F, C08G; artificial filaments or fibres D01F; textile treating compositions D06)
- Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION

## Abstract

Provided is a binder composition for a non-aqueous secondary battery containing: a particulate polymer formed of a block copolymer including an aliphatic conjugated diene monomer unit and a block region formed of an aromatic vinyl monomer unit; at least one saturated hydrocarbon selected from the group consisting of a chain alkane having a carbon number of not less than 5 and not more than 8 and a cycloalkane having a carbon number of not less than 5 and not more than 8; and water. The content of the saturated hydrocarbon is not less than 0.001 parts by mass and not more than 0.1 parts by mass per 100 parts by mass of the particulate polymer.

## Claims

### Claim 1

A binder composition for a non-aqueous secondary battery comprising:
a particulate polymer formed of a block copolymer including an aliphatic conjugated diene monomer unit and a block region formed of an aromatic vinyl monomer unit;
at least one saturated hydrocarbon selected from the group consisting of a chain alkane having a carbon number of not less than 5 and not more than 8 and a cycloalkane having a carbon number of not less than 5 and not more than 8; and
water, wherein
content of the saturated hydrocarbon is not less than 0.001 parts by mass and not more than 0.1 parts by mass per 100 parts by mass of the particulate polymer.

### Claim 2 (depends on 1)

The binder composition for a non-aqueous secondary battery according to claim 1, wherein the particulate polymer has a surface acid content of not less than 0.05 mmol/g and not more than 2.00 mmol/g.

### Claim 3 (depends on 1)

The binder composition for a non-aqueous secondary battery according to claim 1, wherein the block copolymer further includes a coupling moiety.

### Claim 4 (depends on 1)

A slurry composition for a non-aqueous secondary battery functional layer comprising the binder composition for a non-aqueous secondary battery according to claim 1.

### Claim 5 (depends on 4)

The slurry composition for a non-aqueous secondary battery functional layer according to claim 4, further comprising electrode active material particles.

### Claim 6 (depends on 4)

A functional layer for a non-aqueous secondary battery formed using the slurry composition for a non-aqueous secondary battery functional layer according to claim 4.

### Claim 7 (depends on 6)

A battery member for a non-aqueous secondary battery comprising the functional layer for a non-aqueous secondary battery according to claim 6.

### Claim 8 (depends on 7)

A non-aqueous secondary battery comprising the battery member for a non-aqueous secondary battery according to claim 7.