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AssigneeOMG, Inc.
InventorsSandra Wittpahl, Markus Robert Vogt, Karl-Anton Starz, Joachim Kohler
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The present invention relates to a method for the production of a membrane electrode assembly comprising a polymer electrolyte membrane with two opposing membrane surfaces and a cathode and an anode electrode each comprising a catalyst layer and a gas distribution layer. Each catalyst layer is interposed between a membrane surface and the corresponding gas distribution layer. The catalyst layer of the cathode and/or the catalyst layer of the anode comprise at least two sub-layers. According to the present invention at least one of the sub-layers of the cathode electrode and/or the anode electrode is applied directly to the surface of the membrane while the remaining sub-layers are applied to the corresponding gas distribution layers. Finally the assembly of the coated membrane and the coated gas distribution layers is produced.
A method for manufacturing a membrane electrode assembly comprising a polymer electrolyte membrane with two opposing membrane surfaces and a cathode electrode and an anode electrode each comprising a catalyst layer and a gas distribution layer, wherein each catalyst layer is interposed between one membrane surface and the corresponding gas distribution layer and the catalyst layer of the cathode electrode and/or catalyst layer of the anode electrode comprises at least two sub-layers, wherein at least one of the sub-layers of the cathode electrode and/or the anode electrode is applied directly to the membrane surface and the remaining sub-layers are applied to the corresponding gas distribution layers before the assembly of the membrane electrode assembly is carried out.
A membrane electrode assembly for membrane fuel cells, wherein the cathode and/or the anode comprise at least two sub-layers which comprise different hydrophobicities.
Dependencies are inferred from the claim text.