# US 2021/0343484 A1 · Separator composition, separator, and manufacturing method and use thereof

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- Number: US 2021/0343484 A1
- Document ID: US20210343484A1
- Status: Published application
- Kind: A1
- Application number: 17/280,717
- Filed: 2019-10-10
- Published: 2021-11-04
- Earliest claimed: 2018-12-12
- Assignees: Daicel Corporation
- Applicants: Daicel Corporation
- Inventors: Kazuhisa FUKUI
- Web page: https://patentgrep.com/patent/US20210343484A1

## CPC

- H01G 9/2036: {comprising mixed oxides, e.g. ZnO covered TiO2 particles}
- H01G 9/2077: {Sealing arrangements, e.g. to prevent the leakage of the electrolyte}
- C08J 5/2268: {based on macromolecular compounds obtained by reactions involving unsaturated carbon-to-carbon bonds, and by reactions not involving this type of bond}
- C08K 3/22: of metals
- C08K 3/36: Silica
- C08K 9/02: Ingredients treated with inorganic substances
- H01M 50/443: Particulate material
- H01M 50/489: Separators, membranes, diaphragms or spacing elements inside the cells, characterised by their physical properties, e.g. swelling degree, hydrophilicity or shut down properties
- C08K 2003/2241: {Titanium dioxide}
- C08K 2201/005: Additives being defined by their particle size in general
- C08K 2201/011: Nanostructured additives
- H01G 9/2059: {comprising an organic dye as the active light absorbing material, e.g. adsorbed on an electrode or dissolved in solution}
- Y02E 10/542: Dye sensitized solar cells
- Y02E 60/10: Energy storage using batteries
- Y02P 70/50: Manufacturing or production processes characterised by the final manufactured product
- H01G: CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE (selection of specified materials as dielectric H01B3/00; capacitors having potential barriers H10D1/62, H10K10/10)
- C08J: WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H (working, e.g. shaping, of plastics B29)
- C08K: Use of inorganic or non-macromolecular organic substances as compounding ingredients (paints, inks, varnishes, dyes, polishes, adhesives C09)
- 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
- Y02P: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS

## Abstract

Provided is a separator composition that is capable of forming a separator capable of improving the photoelectric conversion efficiency of a photoelectric conversion element such as a dye-sensitized solar cell without being subjected to firing. Prepared is a separator composition including: at least one type of non-conductor particles selected from the group consisting of polymer particles and ceramic particles; and an ionic polymer, and the ionic polymer having a proportion from 0.1 to 30 parts by weight with respect to 1 part by weight of the non-conductor particles. A membranous separator may be prepared by coating a support with the composition without sintering. The non-conductor particles may be insulating inorganic oxide particles. A photoelectric conversion layer 2 may be stacked on a conductive substrate 1, the membranous separator 3 may be stacked on the photoelectric conversion layer to produce a laminate, and this laminate may be used to fabricate a photoelectric conversion element.

## Claims

### Claim 1

A separator composition for forming a separator, the composition comprising: at least one type of non-conductor particles selected from polymer particles and ceramic particles; and an ionic polymer, and the ionic polymer having a proportion from 0.1 to 30 parts by weight with respect to 1 part by weight of the non-conductor particles.

### Claim 2 (depends on 1)

The composition according to claim 1, wherein the non-conductor particles are inorganic oxide particles.

### Claim 3 (depends on 1)

The composition according to claim 1, wherein the non-conductor particles comprise insulator particles, and the insulator particles has a proportion of 10% by volume or greater of the non-conductor particles.

### Claim 4 (depends on 1)

The composition according to claim 1, wherein the non-conductor particles have an average particle size of 10 nm or greater.

### Claim 5 (depends on 1)

The composition according to claim 1, wherein the ionic polymer is an anionic polymer.

### Claim 6 (depends on 1)

The composition according to claim 1, wherein the ionic polymer is a strongly acidic ion exchange resin.

### Claim 7 (depends on 1)

The composition according to claim 1, wherein the ionic polymer is an anionic polymer that has a pH of 5 or higher in an aqueous solution or a water dispersion at 25° C.

### Claim 8 (depends on 1)

The composition according to claim 1, wherein a proportion of the ionic polymer is from 0.25 to 15 parts by weight with respect to 1 part by weight of the non-conductor particles.

### Claim 9 (depends on 1)

The composition according to claim 1, wherein the non-conductor particles comprise non-conductor particles having a particle size of less than 100 nm and non-conductor particles having a particle size of 100 nm or greater, the ionic polymer has a pH of 6 or higher in an aqueous solution or a water dispersion at 25° C., and is a fluorine-containing resin having a sulfo group, and the ionic polymer has a proportion from 0.5 to 8 parts by weight with respect to 1 part by weight of the non-conductor particles.

### Claim 10 (depends on 1)

A separator comprising the composition recited in claim 1.

### Claim 11 (depends on 10)

The separator according to claim 10, wherein the separator is membranous.

### Claim 12 (depends on 10)

A method of manufacturing the separator recited in claim 10, wherein a membranous separator is obtained by coating a support with the composition without sintering.

### Claim 13 (depends on 11)

A laminate comprising a conductive substrate, a photoelectric conversion layer stacked on the conductive substrate, and the membranous separator recited in claim 11 stacked on the photoelectric conversion layer.

### Claim 14 (depends on 13)

The laminate according to claim 13, wherein the membranous separator has an average thickness from 0.1 to 100 μm.

### Claim 15 (depends on 13)

A photoelectric conversion element comprising the laminate recited in claim 13.