Various filter elements for hydrogen fuel cell

Details Various filter elements for hydrogen fuel cell Various filter elements for hydrogen fuel cell

H - Electricity

01

M

H01M 8/02 (2006.01) H01M 8/00 (2006.01)

Patent

CA 2507947

Filter assemblies that manage the movement of gases and water to and from the anode and cathode of fuel cells. The assemblies are particularly suited for methanol and other liquid fuel sources for portable hydrogen fuel cells. These fuel cells and filter elements can be used with equipment such as telephones, personal computing devices, lap top computers, and pagers. The invention provides a filter assembly that forms a selectively permeable barrier between the exterior of the fuel cell and the cathode. The filter assembly manages the exposure of the cathode to particulate and gaseous materials. The filter assembly can also manage the movement of water. The invention also provides a filter assembly that forms a selectively permeable barrier between liquid (e.g., methanol and water) and the exterior of the fuel cell. The filter assembly manages the movement of liquids and gaseous materials away from the anode.

La présente invention concerne des ensembles filtrants qui gèrent les transferts gazeux et d'eau entre les anodes et cathodes des piles à combustibles. Ces ensembles conviennent particulièrement pour les sources de méthanol et autres combustibles liquides destinés aux piles à hydrogène portables. Ces piles à combustible et éléments filtrants peuvent s'utiliser dans le cadre d'équipements tels que les téléphones, les ordinateurs personnels, les ordinateurs portables et les radio-messageurs. L'invention propose un ensemble filtre qui forme une barrière sélectivement perméable entre l'extérieur de la pile à combustible et la cathode. Cet ensemble filtre gère l'exposition de la cathode aux matériaux particulaires et gazeux. L'ensemble filtre peut également gérer la circulation d'eau. L'invention propose également un ensemble filtre formant une barrière sélectivement perméable entre le liquide (notamment le méthanol et l'eau) et l'extérieur de la pile à combustible. L'ensemble filtre gère le mouvement des liquides et des matières gazeuses se dégageant de l'anode.

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