Process for producing electrodes for membrane fuel cells, gas diffusion electrodes for such cells and PEMFC fuel cells containing such electrodes

摘要

Fabricating gas permeable electrodes for membrane fuel cells comprises: (1) preimpregnating carbon (C) with a solution of anions or cations of platinum (Pt); (2) mixing the preimpregnated C with an ionomer solution; (3) applying the mixture to a carbonaceous support; and (4) reducing the Pt by electrochemical means by mounting the electrode as cathode and conducting electrolysis with an aqueous electrolyte.