Membrane electrode assemblies for dmfc having catalyst...

Details Membrane electrode assemblies for dmfc having catalyst... Membrane electrode assemblies for dmfc having catalyst...

H - Electricity

01

M

H01M 4/88 (2006.01) H01M 4/86 (2006.01) H01M 8/10 (2006.01)

Patent

CA 2627604

Membrane Electrode Assemblies for Polymer Electrolyte Hydrogen and Direct Methanol Fuel Cells and Methods for Their Production Electrodes and membrane electrode assemblies for use in fuel cells are provided containing a plurality of layers of catalyst and binder, wherein the first layer (2a, 2b) adjacent to the PEM (1) of the plurality of layers (3a, 3b, 4a, 4b, 5a, 5b) contains a higher concentration of catalyst as compared to each subsequent layer of the electrode.

L'invention concerne des ensembles d'électrodes à membrane destinés à des piles à combustible à méthanol direct et à hydrogène d'électrolyte polymère et des procédés destinés à la production de ces électrodes et de ces ensembles d'électrodes à membrane utiles dans des piles à combustible contenant plusieurs couches de catalyseur et de liant. La première couche composée de plusieurs couches contient une concentration élevée en catalyseur par rapport à chaque couche d'électrode subséquente.

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