Membrane-electrode assembly for solid polymer electrolyte fuel cell and method for producing the same

Abstract

A membrane-electrode assembly for solid polymer electrolyte fuel cells is provided which has a solid polymer electrolyte membrane having a high concentration of protonic acid groups enabling high proton conductivity and high humid condition, along with superior dimensional stability, without the membrane-electrode assembly dissolving in hot water. The membrane-electrode assembly for solid polymer electrolyte fuel cells was formed by using a polymer electrolyte composition consisting of a polymer having a cross-linking structure, this polymer electrolyte composition being obtained from a mixed solution that includes a polymer electrolyte containing a protonic acid group, a compound containing plurality of ethylenic unsaturated groups, and a solvent.

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