Polymer electrolyte membrane fuel cell with bipolar plate...

Details Polymer electrolyte membrane fuel cell with bipolar plate... Polymer electrolyte membrane fuel cell with bipolar plate...

H - Electricity

01

M

H01M 8/02 (2006.01)

Patent

CA 2259223

A polymer electrolyte membrane fuel cell comprised of polymer electrolyte membranes, gas diffusion electrodes that sandwich the membranes, and bipolar plates operating as gas separation plates and current collectors with fuel/oxidizing agent supply and discharge passages provided by projections on both of its surfaces. A bipolar plate is employed which comprises projections on the bipolar plate of a melt-processible polymer having good fluidity and a coating on the surfaces of the bipolar plate comprising metal, metal nitride or metal carbide.

L'invention concerne un électrolyseur à membranes en polymère comprenant: membranes électrolytiques en polymère prises en sandwich entre des électrodes régulant la diffusion de gaz; plaques bipolaires agissant comme séparateur de gaz et collecteur de courant, avec conduits d'alimentation et d'évacuation pour combustible/agent oxidant en protubérance saillant sur les deux surfaces. On utilise une plaque bipolaire qui a des éléments protubérants en polymère susceptibles d'être traités à l'état fondu et offrant une bonne fluidité. Les surfaces de la plaque ont un revêtement à base de métal, de nitrure ou de carbure métallique.

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