SOLID POLYMER ELECTROLYTE MEMBRANE AND MANUFACTURING METHOD THEREOF, MEMBRANE ELECTRODE ASSEMBLY FOR FUEL CELL, AND FUEL CELL

摘要

A solid polymer electrolyte membrane is manufactured by applying radiation to a fluororesin or hydrocarbon-based resin and co-graft polymerizing at least a-methylstyrene and alkoxysilane containing styryl groups with said resin, and then sulfonating. The solid polymer electrolyte membrane of the present invention has excellent oxidation resistance. Said electrolyte membrane is placed between the fuel electrode and the air electrode of a fuel cell to form a fuel cell membrane electrode assembly. A fuel cell with extremely high performance can be produced by using said assembly in the fuel cell.