Proton exchange membranes are described. The proton exchange membranes comprise a blend of a proton-conductive polymer and a free radical scavenging polymer having phenolic hydroxyl groups. The free radical scavenging polymer and the cation exchange polyme...

The present invention relates to block copolymers comprising sulfonated poly(sulfones), membranes comprising said copolymers and methods for preparing said copolymers and membranes. The block copolymer of the invention comprises a) at least one hydrophilic...

A fuel cell electrolyte membrane includes a first electrolyte membrane formed from a basic polymer including a phosphoric acid, and second and third electrolyte membranes each formed from a basic polymer including a phosphoric acid and clamping the first e...