Patent ID: 9722271
Date: 2017-08-01
CPC Classifications: C08J,H01M,Y02E,Y02T

Claim:
1. A polymer electrolyte membrane comprising a fluorinated polymer membrane and a coating layer comprising a blend of a hydrocarbon-based ionomer and a fluorinated ionomer on at least one surface of the fluorinated polymer membrane, the coating layer having a thickness of about 10 nm to about 2.39 μm, wherein a weight ratio of the hydrocarbon-based ionomer to the fluorinated ionomer is about 2:1 to about 10:1, and wherein the hydrocarbon-based ionomer comprises at least one ionomer selected from the group consisting of polyethersulfone, cross-linked polystyrene sulfonic acid, polyacrylic acid, polyvinyl sulfonic acid, poly (2-acrylamide-2-methylpropyl sulfonic acid), sulfonated polyimide, sulfonated polysulfone, sulfoaklylated polysulfone, sulfonated polycarbonate, a poly(p-phenylene) substituted with a sulfophenoxy benzyl group, sulfonated polyquinoxaline, sulfonated (phosphonated) polyphosphazene, sulfonated polyketone, sulfonated poly(phenylene oxide), sulfonated polyethersulfone, sulfonated polyether ketone, sulfonated polyether ether ketone, sulfonated polyphenylene sulfide, sulfonated polyphenylene sulfone, sulfonated polyphenylene sulfide sulfone, sulfonated polyphenylene sulfide sulfone nitrile, sulfonated polysulfide ketone, sulfonated polyarylene ether, sulfonated polyarylene ether nitrile, sulfonated polyarylene ether ether nitrile, sulfonated polyarylene ether sulfone ketone, sulfonated polyarylene ether sulfone, and combinations thereof.