Proton-conducting polymer membrane coated with a catalyst layer containing polymers comprising phosphonous acid groups, membrane-electrode assembly and their application in fuel cells

摘要

The present invention relates to a proton-conducting polymer membrane coated with a catalyst layer, wherein the polymer membrane contains polymers comprising phosphonic acid groups, which are obtainable by polymerization of monomers comprising phosphonic acid groups, characterized in that the catalyst layer contains ionomers comprising phosphonic acid groups which are obtainable by polymerization of monomers comprising phosphonic acid groups ,