MEMBRANE ELECTRODE ASSEMBLIES FOR FUEL CELLS AND METHODS OF MAKING

摘要

A sealed unbonded membrane electrode assembly includes a first gas diffusion layer and a second gas diffusion layer each having a peripheral border and an active region a catalyst coated membrane, having an active region, interposed between the first gas diffusion layer and the second gas diffusion layer; and a frame member; wherein the frame member envelops the peripheral border of the first gas diffusion layer and the second gas diffusion layer and is sealed to the catalyst-coated membrane; and wherein the catalyst-coated membrane is unbonded to the first and second gas diffusion layers in the active regions thereof.