Study of nitrile-containing proton exchange membranes prepared by radiation grafting: Performance and degradation in the polymer electrolyte fuel cell

209Radiation grafted membranes containing a nitrile co-monomer, i.e., acrylonitrile (AN) or methacrylonitrile (MAN), were characterized in accelerated fuel cell tests. AN showed significant hydrolysis, MAN is therefore a more suitable co-monomer choice.