# US 2021/0242533 A1 · Slurry composition for non-aqueous secondary battery functional layer, functional layer for non-aqueous secondary battery, separator for non-aqueous secondary battery, and non-aqueous secondary battery

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- Number: US 2021/0242533 A1
- Document ID: US20210242533A1
- Status: Published application
- Kind: A1
- Application number: 17/268,478
- Filed: 2019-08-15
- Published: 2021-08-05
- Earliest claimed: 2018-08-24
- Assignees: Zeon Corporation
- Applicants: Zeon Corporation
- Inventors: Kazuki ASAI
- Web page: https://patentgrep.com/patent/US20210242533A1

## CPC

- H01M 10/0525: Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
- H01M 50/411: Organic material
- H01M 4/622: {being polymers}
- H01M 50/403: Manufacturing processes of separators, membranes or diaphragms
- H01M 50/414: Synthetic resins, e.g. thermoplastics or thermosetting resins
- H01M 50/417: Polyolefins
- H01M 50/423: Polyamide resins
- H01M 50/44: Fibrous material
- H01M 50/443: Particulate material
- H01M 50/449: having a layered structure
- H01M 50/461: {with adhesive layers between electrodes and separators}
- H01M 50/409: Separators, membranes or diaphragms characterised by the material
- Y02E 60/10: Energy storage using batteries
- H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION

## Abstract

Provided is a slurry composition for a non-aqueous secondary battery functional layer with which it is possible to form a functional layer that has excellent adhesiveness and that can improve rate characteristics of a non-aqueous secondary battery. The slurry composition for a non-aqueous secondary battery functional layer contains organic particles, a binder, and a melamine compound. The melamine compound constitutes a proportion of not less than 0.5 mass % and not more than 85 mass % among the total of the binder and the melamine compound.

## Claims

### Claim 1

A slurry composition for a non-aqueous secondary battery functional layer comprising organic particles, a binder, and a melamine compound, wherein
the melamine compound constitutes a proportion of not less than 0.5 mass % and not more than 85 mass % among a total of the binder and the melamine compound.

### Claim 2 (depends on 1)

The slurry composition for a non-aqueous secondary battery functional layer according to claim 1, wherein the binder is a polymer including at least one functional group selected from the group consisting of a carboxy group, a hydroxyl group, an amino group, an epoxy group, an oxazoline group, a sulfo group, a nitrile group, and an amide group.

### Claim 3 (depends on 1)

The slurry composition for a non-aqueous secondary battery functional layer according to claim 1, wherein the organic particles have a volume-average particle diameter of not less than 150 nm and not more than 2,000 nm.

### Claim 4 (depends on 1)

The slurry composition for a non-aqueous secondary battery functional layer according to claim 1, wherein the organic particles have a core-shell structure including a core portion and a shell portion at least partially covering an outer surface of the core portion.

### Claim 5 (depends on 1)

The slurry composition for a non-aqueous secondary battery functional layer according to claim 1, wherein the organic particles have a larger volume-average particle diameter than the binder.

### Claim 6 (depends on 1)

The slurry composition for a non-aqueous secondary battery functional layer according to claim 1, wherein the melamine compound is at least one selected from the group consisting of melamine, ammeline, and melamine cyanurate.

### Claim 7 (depends on 1)

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 1.

### Claim 8 (depends on 7)

A separator for a non-aqueous secondary battery comprising: a separator substrate; and the functional layer for a non-aqueous secondary battery according to claim 7.

### Claim 9 (depends on 7)

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