Patent ID: 7923167

Claim:
A polymer electrolyte membrane consisting essentially of: an ionic conducting polymer selected from the group consisting of polyimide, polyvinylalcohol, fluorinated polymer, vinylidene fluoride-hexafluoropropylene copolymer, polyvinylidene fluoride, polyether sulfone, poly ether ether ketone, and combinations thereof; and a light-irradiated product of a photoacid generator (PAG), wherein the PAG includes a compound selected from the group consisting of Diphenyliodonium-5-hydroxynaphthalene-1-sulfonate in Formula 1, Dimethyl (4,7-dihydroxynaphthalene) sulfonium-p-toluenesulfonate in Formula 2, Diphenyliodonium, 9,10-Dimethoxy Anthracene-2-sulfonate in Formula 3, p-Nitrobenzyl 9,10-Dimethoxy Anthracene-2-sulfonate in Formula 4, compounds in Formula 5 through Formula 7, Bis(Cyclohexylsulfonyl)diazomethane, triphenylsulfonium-p-toluenesulfonate, triphenylsulfonium cyclohexanesulfamate, and combinations thereof: wherein the polymer electrolyte membrane is a polymer electrolyte membrane for a fuel cell.