Fuel cell module and structure for gas supply to fuel cell

H - Electricity – 01 – M

Patent

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Details

H01M 8/02 (2006.01) H01M 8/10 (2006.01) H01M 8/12 (2006.01) H01M 8/24 (2006.01) H01M 8/04 (2006.01)

Patent

CA 2408041

A conductive and tabular separator is inserted into the gap between the fuel electrode layer of an i-th power generating cell and the oxidizer electrode layer of an (i+1)-th power generating cell adjacent to the fuel electrode layer. A fuel supply passage is so formed on one face of each of these separators that a fuel gas flows radially from almost the center of the fuel electrode layer to its edge. An oxidizer supply passage is so formed on the other face that an oxidizer gas outgoes almost uniformly in a shower toward the oxidizer polar layer. Thus, all of the surfaces of the power generating cells contribute to power generation to increase the frequency of collision between the fuel gas and the fuel electrode layer and that between the oxidizer gas and the oxidizer electrode layer, and to improve the generation efficiency.

Dans cette invention, un séparateur conducteur et tabulaire est inséré dans l'espace libre situé entre la couche électrode à combustible d'une i?ème¿ cellule génératrice de courant et la couche électrode à oxydant d'une (i+1)?ème¿ cellule génératrice de courant adjacente à la couche électrode à combustible. Un passage d'alimentation en combustible est formé sur l'une des faces de chacun de ces séparateurs pour qu'un gaz combustible s'écoule radialement depuis le centre approximativement de la couche électrode à combustible jusqu'à son bord. Un passage d'alimentation en oxydant est formé sur l'autre face de telle sorte qu'un gaz oxydant soit éjecté presque uniformément sous la forme d'un jet de douche en direction de la couche polaire d'oxydant. Ainsi, toutes les surfaces des cellules génératrices de courant contribuent à la production de courant, ce qui augmente la fréquence de collision entre le gaz combustible et la couche électrode à combustible et la fréquence de collision entre le gaz oxydant et la couche électrode à oxydant, tout en améliorant l'efficacité de production du courant.

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