Porous material for fuel cell electrolyte membrane, method for producing the same, electrolyte membrane for solid polymer fuel cell, membrane electrode assembly (mea), and fuel cell

Abstract

According to the present invention, a porous material for a fuel cell electrolyte membrane, wherein at least one strength auxiliary layer is provided inside and/or on the surface of a high porosity layer, the high porosity layer and the strength auxiliary layer constitute a multilayer structure, and the average diameter of pores of the high porosity layer is different from the average diameter of pores of the strength auxiliary layer, is provided. Also, a porous material having high porosity and high strength, which is suitable as a base material for an electrolyte membrane of a solid polymer fuel cell, is provided and a high-performance fuel cell using such material is realized.

Dependencies are inferred from the claim text.