# US 10,122,039 B2 · Method of producing dispersion liquid of gelatinous electrolyte

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- Number: US 10,122,039 B2
- Document ID: US10122039B2
- Status: Granted
- Kind: B2
- Application number: 14/934,716
- Filed: 2015-11-06
- Published: 2016-05-12
- Granted: 2018-11-06
- Earliest claimed: 2014-11-10
- Assignees: Toyota Jidosha Kabushiki Kaisha
- Applicants: Toyota Jidosha Kabushiki Kaisha
- Inventors: Yoshito Endo
- Web page: https://patentgrep.com/patent/US10122039B2

## CPC

- H01M 8/1016: characterised by the electrolyte material (H01M8/12 takes precedence)
- H01M 8/1081: starting from solutions, dispersions or slurries exclusively of polymers
- H01B 1/122: {Ionic conductors}
- H01M 8/1023: having only carbon, e.g. polyarylenes, polystyrenes or polybutadiene-styrenes
- H01M 8/1039: halogenated, e.g. sulfonated polyvinylidene fluorides
- H01M 2300/0085: Immobilising or gelification of electrolyte
- Y02E 60/50: Fuel cells
- Y02P 70/50: Manufacturing or production processes characterised by the final manufactured product
- H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01B: CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES (selection for magnetic properties H01F1/00; waveguides H01P {; printed circuits H05K})
- 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

A method of producing a dispersion liquid of a gelatinous electrolyte includes a water content reduction process of concentrating an aqueous dispersion liquid of an electrolyte at a temperature of 50° C. or less and reducing a water content in a concentrate of the electrolyte to 5% by mass or less based on the total mass of the concentrate of the electrolyte, and an alcohol addition process of adding an alcohol to the concentrate of the electrolyte obtained in the water content reduction process to form the dispersion liquid of the gelatinous electrolyte.

## Claims

### Claim 1

A producing method of producing a dispersion liquid of a gelatinous electrolyte, comprising:
a water content reduction process of concentrating an aqueous dispersion liquid of an electrolyte at a temperature from 5° C. to 40° C. and reducing a water content in a concentrate of the electrolyte to 3% to 5% by mass based on a total mass of the concentrate of the electrolyte; and
an alcohol addition process of adding an alcohol to the concentrate of the electrolyte obtained in the water content reduction process to form the dispersion liquid of the gelatinous electrolyte.

### Claim 2 (depends on 1)

The producing method according to claim 1, wherein in the water content reduction process, the aqueous dispersion liquid of the electrolyte is concentrated until an electrolyte content in the concentrate of the electrolyte becomes 20% by mass or more based on the total mass of the concentrate of the electrolyte.

### Claim 3 (depends on 1)

The producing method according to claim 1, wherein in the water content reduction process, the aqueous dispersion liquid of the electrolyte is concentrated at a temperature which falls within a range 5° C. to 30° C.

### Claim 4 (depends on 1)

The producing method according to claim 1, wherein the alcohol is one or more aliphatic alcohols.

### Claim 5 (depends on 1)

The producing method according to claim 1, further comprising a cooling process of cooling the concentrate of the electrolyte obtained in the water content reduction process.

### Claim 6 (depends on 1)

The producing method according to claim 1, wherein the concentration of the aqueous dispersion liquid of the electrolyte is performed until a dielectric constant of the concentrate of the aqueous dispersion liquid of the electrolyte becomes 20 or less.

### Claim 7 (depends on 1)

The producing method according to claim 1, wherein the concentration of the aqueous dispersion liquid of the electrolyte is performed under an atmospheric pressure or a reduced pressure.

### Claim 8 (depends on 1)

The producing method according to claim 1, wherein an addition amount of the alcohol is set in such an amount that the electrolyte content in the aqueous dispersion liquid of the electrolyte available after the alcohol addition becomes substantially equal to the electrolyte content in the aqueous dispersion liquid of the electrolyte available before the water content reduction process.

### Claim 9 (depends on 1)

The producing method according to claim 1, further comprising a stirring process of stirring the concentrate of the electrolyte to which the alcohol is added.

### Claim 10 (depends on 9)

The producing method according to claim 9, wherein a temperature at which the electrolyte concentrate is stirred after the alcohol addition is equal to a temperature of the alcohol addition process.