Fuel cell with improved water draining capability

Details Fuel cell with improved water draining capability Fuel cell with improved water draining capability

H - Electricity

01

M

H01M 8/02 (2006.01) H01M 8/10 (2006.01)

Patent

CA 2462189

In a fuel cell comprising a laminate wherein an electrode structure is sandwiched by separators, the separator (20A) has a projection (21) contacting an electrode structure (10) with the contact angle between this projection (21) and electrode structure (10) set smaller than the contact angle of water with the surface of the separator (20A). Regardless of the surface property of the separator, a corner part formed between the separator projection and electrode structure which contact each other is so constituted that water is hard to reside or penetrate. Thus, the draining capability of a gas channel is enhanced to improve power generating performance.

Dans une pile à combustible comportant un laminé dans lequel une structure d'électrode est pris en sandwich par les séparateurs, le séparateur (20A) présente une saillie (21) en contact avec la structure d'électrode (10), l'angle de contact entre ladite saillie (21) et la structure d'électrode (10) étant inférieur à l'angle de contact de l'eau avec la surface du séparateur (20A). Indépendamment de la caractéristique de la surface du séparateur, une portion d'angle formée entre la saillie du séparateur et la structure d'électrode qui se trouvent en contact est constituée de telle sorte que l'eau peut difficilement s'y loger ou pénétrer. Ainsi, on améliore la capacité de drainage d'un canal de gaz en vue d'améliorer la performance de génération d'énergie.

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