# US 2010/0167101 A1 · Proton exchange membrane composition

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- Number: US 2010/0167101 A1
- Document ID: US20100167101A1
- Status: Published application
- Kind: A1
- Application number: 12/546,004
- Filed: 2009-08-24
- Published: 2010-07-01
- Earliest claimed: 2008-12-31
- Assignees: Industrial Technology Research Institute
- Inventors: Tsung-Hsiung Wang; Jing-Pin Pan; Wen-Chin Lee; Yueh-Wei Lin; Ya-Tin Hsu; Chung-Liang Chang; Chih-Jer Shih
- Web page: https://patentgrep.com/patent/US20100167101A1

## CPC

- H01M 8/1041: Polymer electrolyte composites, mixtures or blends
- C08G 73/12: Unsaturated polyimide precursors
- C08J 5/2256: {based on macromolecular compounds obtained by reactions other than those involving carbon-to-carbon bonds, e.g. obtained by polycondensation}
- C08L 79/085: {Unsaturated polyimide precursors}
- H01M 8/1023: having only carbon, e.g. polyarylenes, polystyrenes or polybutadiene-styrenes
- H01M 8/1025: having only carbon and oxygen, e.g. polyethers, sulfonated polyetheretherketones [S-PEEK], sulfonated polysaccharides, sulfonated celluloses or sulfonated polyesters
- H01M 8/1027: having carbon, oxygen and other atoms, e.g. sulfonated polyethersulfones [S-PES]
- H01M 8/103: having nitrogen, e.g. sulfonated polybenzimidazoles [S-PBI], polybenzimidazoles with phosphoric acid, sulfonated polyamides [S-PA] or sulfonated polyphosphazenes [S-PPh]
- H01M 8/1032: having sulfur, e.g. sulfonated-polyethersulfones [S-PES]
- H01M 8/1048: Ion-conducting additives, e.g. ion-conducting particles, heteropolyacids, metal phosphate or polybenzimidazole with phosphoric acid
- C08J 2371/12: Polyphenylene oxides
- C08J 2400/202: Dendritic macromolecules, e.g. dendrimers or hyperbranched polymers
- H01M 4/92: Metals of platinum group (H01M4/94 {, H01M4/9058} take precedence)
- Y02E 60/50: Fuel cells
- H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- C08G: MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- 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)
- 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

Proton exchange membrane compositions having high proton conductivity are provided. The proton exchange membrane composition includes a hyper-branched polymer, wherein the hyper-branched polymer has a DB (degree of branching) of more than 0.5. A polymer with high ion conductivity is distributed uniformly over the hyper-branched polymer, wherein the hyper-branched polymer has a weight ratio equal to or more than 5 wt %, based on the solid content of the proton exchange membrane composition.

## Claims

### Claim 1

A proton exchange membrane composition, comprising:
a hyper-branched polymer, wherein the hyper-branched polymer has a DB (degree of branching) of more than 0.5; and
a polymer with high ion conductivity distributed uniformly over the hyper-branched polymer,
wherein the hyper-branched polymer has a weight ratio equal to or more than 5 wt %, based on the solid content of the proton exchange membrane composition.

### Claim 2 (depends on 1)

The proton exchange membrane composition as claimed in claim 1, wherein the hyper-branched polymer comprises a polymer prepared by polymerizing a bismaleimide-containing compound with a barbituric acid.

### Claim 3 (depends on 2)

The proton exchange membrane composition as claimed in claim 2, wherein the molar ratio of the bismaleimide-containing compound and barbituric acid is 20:1 to 1:5.

### Claim 4 (depends on 2)

The proton exchange membrane composition as claimed in claim 2, wherein the molar ratio of the bismaleimide-containing compound and barbituric acid is 5:1 to 1:2.

### Claim 5 (depends on 2)

The proton exchange membrane composition as claimed in claim 2, wherein the bismaleimide-containing compound comprises substituted or unsubstituted bismaleimide monomer or substituted or unsubstituted bismaleimide oligomer.

### Claim 6 (depends on 2)

The proton exchange membrane composition as claimed in claim 2, wherein the bismaleimide-containing compound comprises

### Claim 7 (depends on 1)

The proton exchange membrane composition as claimed in claim 1, wherein the hyper-branched polymer has a weight ratio of 1-30 wt %, based on the solid content of the proton exchange membrane composition.

### Claim 8 (depends on 1)

The proton exchange membrane composition as claimed in claim 1, wherein the hyper-branched polymer has a weight ratio of 5-25 wt %, based on the solid content of the proton exchange membrane composition.

### Claim 9 (depends on 1)

The proton exchange membrane composition as claimed in claim 1, wherein the polymer with high ion conductivity comprises Nafion, sulfonated poly(ether ether ketone)(s-PEEK), sulfonated polyimides (s-PI), phosphoric acid/polybenzimidazole polymer (p-PBI), sulfonated poly(phenylene oxide) (s-PPO), sulfonated poly(arylene ether sulfone) (s-PES), or sulfonated poly(4-phenoxybenzoyl-1,4-phenylene) (s-PPBP).

### Claim 10 (depends on 1)

The proton exchange membrane composition as claimed in claim 1, further comprising a catalyst.

### Claim 11 (depends on 10)

The proton exchange membrane composition as claimed in claim 10, wherein the catalyst comprises platinum, ruthenium, or platinum-ruthenium alloy.

### Claim 12 (depends on 1)

The proton exchange membrane composition as claimed in claim 1, wherein a proton exchange membrane made from the proton exchange membrane composition possesses an operating temperature of between 25° C. to 150° C.