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

摘要

PROBLEM TO BE SOLVED: To provide an membrane for solid polymer fuel cell which brings high power generation performance without regardless of a dew point of a supply gas and makes stable power generation available for a long term.

SOLUTION: An electrolyte membrane for solid polymer fuel cell is composed of an ion exchange membrane made of a fluorine-containing polymer which has one kind of ion-exchange group selected from a sulfonimide group and a phosphonic acid group, and contains one kind or more selected from a group composed of cerium atom and manganese atom. Preferably, the one kind or more selected from a group composed of cerium atom and manganese atom is included as ions.

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