# US 11,999,826 B2 · Silane-based functionalized polymer, method of preparing same and polymer electrolyte composite membrane including same

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- Number: US 11,999,826 B2
- Document ID: US11999826B2
- Status: Granted
- Kind: B2
- Application number: 16/853,192
- Filed: 2020-04-20
- Published: 2020-10-29
- Granted: 2024-06-04
- Earliest claimed: 2019-04-24
- Assignees: Industry Foundation of Chonnam National University
- Applicants: Industry Foundation of Chonnam National University
- Inventors: Ho Young Jung; Jae Shin Jo
- Web page: https://patentgrep.com/patent/US11999826B2

## CPC

- C08G 77/02: Polysilicates
- C08G 77/14: containing silicon bound to oxygen-containing groups
- C08G 77/06: Preparatory processes
- C08G 77/18: to alkoxy or aryloxy groups
- C08K 5/5415: containing at least one Si—O bond
- C08K 5/5419: containing at least one Si—C bond
- C09D 183/02: Polysilicates
- H01M 8/1023: having only carbon, e.g. polyarylenes, polystyrenes or polybutadiene-styrenes
- H01M 8/1048: Ion-conducting additives, e.g. ion-conducting particles, heteropolyacids, metal phosphate or polybenzimidazole with phosphoric acid
- H01M 8/1051: Non-ion-conducting additives, e.g. stabilisers, SiO2 or ZrO2
- Y02E 60/50: Fuel cells
- Y02P 70/50: Manufacturing or production processes characterised by the final manufactured product
- C08G: MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08K: Use of inorganic or non-macromolecular organic substances as compounding ingredients (paints, inks, varnishes, dyes, polishes, adhesives C09)
- C09D: COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR (cosmetics A61K; processes for applying liquids or other fluent materials to surfaces, in general, B05D; staining wood B27K5/02; glazes or vitreous enamels C03C; natural resins, French polish, drying-oils, driers, turpentine, per se, C09F; polishing compositions other than French polish, ski waxes C09G; adhesives or use of materials as adhesives C09J; materials for sealing or packing joints or covers C09K3/10; materials for stopping leaks C09K3/12; processes for the electrolytic or electrophoretic production of coatings C25D)
- 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

A novel silane-based functionalized polymer is useful as an organic precursor material for forming inorganic particles that are introduced when manufacturing a polymer electrolyte composite membrane. A polymer electrolyte composite membrane according to an embodiment of the present invention includes at least one of a perfluorinated polymer and a hydrocarbon-based polymer, and a silane-based functionalized polymer represented by Chemical Formula 1.

## Claims

### Claim 1

A silane-based functionalized polymer represented by the following formula:

### Claim 2

A polymer electrolyte composite membrane prepared by reacting at least one of a perfluorinated polymer and a hydrocarbon-based polymer, and a silane-based functionalized polymer represented by the following formula:

### Claim 3 (depends on 2)

The polymer electrolyte composite membrane of claim 2, wherein the at least one of the perfluorinated polymer and the hydrocarbon-based polymer, and the silane-based functionalized polymer are used at a weight ratio of 95:5 to 30:70.

### Claim 4 (depends on 2)

The polymer electrolyte composite membrane of claim 2, wherein the perfluorinated polymer is at least one selected from the group consisting of sulfonated tetrafluoroethylene based fluoropolymer-copolymer, perfluorinated sulfonic acid polymer (PFSA), polytetrafluoroethylene, poly(vinylidene fluoride), poly(vinyl fluoride), poly(vinylidene fluoro-co-perfluorinated alkylvinylether), and combinations thereof.

### Claim 5 (depends on 2)

The polymer electrolyte composite membrane of claim 2, wherein the hydrocarbon-based polymer is at least one selected from the group consisting of sulfonated polystyrene, sulfonated polyether ketone, sulfonated polyether ether ketone, sulfonated poly(4-phenoxybenzoyl-1,4-phenylene), sulfonated polyether sulfone, sulfonated polyarylene ether sulfone, sulfonated poly(phenylquinoxaline), sulfonated polysulfone, sulfonated poly(2,6-dimethyl-1,4-phenylene oxide), sulfonated polyimide, sulfonated polybenzimidazole, and sulfonated polyphenylene sulfide.

### Claim 6 (depends on 2)

The polymer electrolyte composite membrane of claim 2, wherein an amount of the silane-based functionalized polymer is in proportion to water uptake of the composite membrane and is in inverse proportion to ion conductivity of the composite membrane.