MANUFACTURING METHOD OF POLYELECTROLYTE MEMBRANE, AND SOLID POLYMER FUEL CELL

摘要

PROBLEM TO BE SOLVED: To provide a method for manufacturing a polyelectrolyte membrane exhibiting excellent radical resistance in a simplified process and to enhance thereby durability of a solid polymer fuel cell.

SOLUTION: The manufacturing method of the polyelectrolyte membrane comprises synthesizing a polyelectrolyte precursor exhibiting proton conductivity by alkali hydrolysis and an acid treatment, forming the polyelectrolyte precursor into a film and subjecting the film to alkali hydrolysis and an acid treatment for the polyelectrolyte precursor, where an anti-radical agent is made to exist in any one of polymerization steps of charge of polymerizable raw materials, polymerization and isolation of a synthesized polyelectrolyte precursor.

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