POROUS MATERIAL FOR ELECTROLYTE MEMBRANE FOR FUEL CELL, ITS MANUFACTURING METHOD, ELECTROLYTE MEMBRANE FOR POLYMER ELECTROLYTE FUEL CELL, MEMBRANE-ELECTRODE ASSEMBLY (MEA), AND FUEL CELL

摘要

PROBLEM TO BE SOLVED: To provide a porous material having high porosity and high strength suitable for a substrate of an electrolyte membrane for a polymer electrolyte fuel cell; and to provide a high performance fuel cell using this.

SOLUTION: The porous material for the electrolyte membrane for the fuel cell has at least one strength auxiliary layer on the inside and/or the surface of a high porosity layer, comprises multilayer structure of the high porosity layer and the strength auxiliary layer, and an average pore diameter of the pores of the high porosity layer is different from an average pore diameter of the strength auxiliary layer.

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