Patent ID: 7923165

Claim:
A proton-conducting membrane designed to serve as an electrolyte in a fuel cell, which membrane consists essentially of a single metal or metal hydride support, wherein one or both faces of said support is coated with an electronically-insulating proton-conducting coating, which coating consists of an inorganic material that contains no liquid phase, said coating having a thickness such that the area-specific resistance for protons is in the range of 0.01-100Ω·cm 2 at at least one temperature between 220° C. and 550° C., wherein the metal or metal in the metal hydride is selected from the group consisting of Pd, PdAg, PdCu, Ti, LaNi 5 , TiFe and CrV 2 , V/Ni/Ti, V/Ni and V/Ti.