A METHOD OF PREPARING A RADIATION FUEL CELL MEMBRANE WITH ENHANCED CHEMICAL STABILITY AND A MEMBRANE ELECTRODE ASSEMBLY
申请人:PAUL SCHERRER INSTITUT
公开号:EP1893323B1
公开(公告)日:2011-03-30
Method for Preparing a Radiation Grafted Fuel Cell Membrane with Enhanced Chemical Stability and a Membrane Electrode Assembly
申请人:Scherer Guenther G.
公开号:US20080199754A1
公开(公告)日:2008-08-21
In a method for preparing a membrane to be assembled in a membrane electrode assembly, such as a polymer electrolyte membrane fuel cell, a base polymer film is irradiated with at least one of electromagnetic and particle radiation in order to form reactive centers within the polymer film. The irradiated film is exposed to a mixture of monomers amenable to radical polymerization to form a graft copolymer in the irradiated film. The mixture includes α-methylstyrene and methacrylonitrile. The grafted film is sulfonated to introduce sulfonic acid sites providing ionic conductivity of the material.