Fuel cell

Details Fuel cell Fuel cell

H - Electricity

01

M

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

Patent

CA 2524717

A fuel cell includes an electrolyte electrode assembly including a cathode, and an anode, and an electrolyte interposed between the cathode and the anode. The anode is made of porous material of Ni, for example. A dense layer is formed integrally on an outer circumferential surface of the anode as a protective layer by densifying process. The dense layer prevents an exhaust gas from flowing into the anode. The dense layer is formed by heating an outer circumferential region of the anode by a laser or the like.

L'invention porte sur une pile à combustible comprenant un ensemble électrolyte/électrode (56) comprenant une cathode (52), une anode (54), et un électrolyte (50) interposé entre la cathode (52) et l'anode /54). L'anode (54) est faite d'un matériau poreux de Ni par exemple. Une couche dense (54a) est formée entièrement sur une surface de circonférence externe de l'anode (54) en tant que couche protectrice au moyen d'un procédé de densification. Cette couche dense (54a) empêche qu'un gaz d'évacuation ne circule dans l'anode (54). La couche dense (54a) est formée par chauffage d'une zone de circonférence externe de l'anode (54) au moyen d'un laser ou similaire.

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