ELECTROLYTE MEMBRANE AND FUEL CELL USING SAME

摘要

Disclosed is an electrolyte membrane which exhibits high ion conductivity even under high temperature no humidification conditions. Specifically disclosed is an electrolyte membrane comprising a complex oxoacid solid, which contains two or more kinds of oxoacid groups, hydrogen and at least one element selected from Mg, Ca, Sr and Ba, and a reinforcing material contained in the solid for improving the mechanical characteristics of the solid. The reinforcing material is composed of a polymer material or an inorganic material.