Method and apparatus for reducing reactant crossover in an...

H - Electricity – 01 – M

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H01M 4/86 (2006.01) H01M 4/96 (2006.01) H01M 8/02 (2006.01) H01M 8/10 (2006.01) H01M 4/92 (2006.01)

Patent

CA 2240661

In an electrochemical fuel cell, a sufficient quantity of catalyst, effective for promoting the reaction of reactant supplied to an electrode, is disposed within the volume of the electrode so that a reactant introduced at a first major surface of the electrode is substantially completely reacted upon contacting the second major surface. Crossover of reactant from one electrode to the other electrode through the electrolyte in an electrochemical fuel cell is thereby reduced.

Dans une cellule électrochimique, un catalyseur favorisant efficacement la réaction d'un réactif fourni à une électrode est disposé en une quantité suffisante dans l'espace interne de l'électrode pour qu'un réactif introduit au niveau d'une première surface principale de l'électrode soit presque entièrement entré en réaction lorsqu'il entre en contact avec la seconde surface principale. La migration du réactif d'une électrode à l'autre à travers l'électrolyte dans une cellule électrochimique est ainsi réduite.

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