Solid oxide fuel cell having channel member forming...

Details Solid oxide fuel cell having channel member forming... Solid oxide fuel cell having channel member forming...

H - Electricity

01

M

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

Patent

CA 2550965

A fuel cell includes an electrolyte electrode assembly and a pair of separators sandwiching the electrolyte electrode assembly. Each of the separators is single plate, and includes a plurality of circular disks. First protrusions and second protrusions are provided on both surfaces of the circular disk. The first protrusions contact the anode of the electrolyte electrode assembly, and the second protrusions contact the cathode of the electrolyte electrode assembly. A channel member is provided on a surface of the separator facing the cathode. The channel member forms a plurality of fuel gas supply channels connected between a fuel gas supply passage and a fuel gas inlet for supplying a fuel gas into a fuel gas flow field.

Cette invention se rapporte à une pile à combustible (10), qui comprend un ensemble électrode électrolytique (26) et une paire de séparateurs (28) prenant en sandwich l'ensemble électrode électrolytique (26). Chacun des séparateurs (28) est constitué par une plaque simple, et comporte plusieurs disques circulaires (36). Des premières saillies (48) et des secondes saillies (52) sont situées sur les deux surfaces du disque circulaire (36). Les premières saillies (48) sont en contact avec l'anode (24) de l'ensemble électrode électrolytique (26), et les secondes saillies (52) sont en contact avec la cathode (22) de l'ensemble électrode électrolytique (26). Un élément à canal (56) est placé sur une surface du séparateur (28) faisant face à la cathode (22). L'élément à canal (56) forme plusieurs canaux d'amenée de gaz combustible (66) raccordés entre un passage d'amenée de gaz combustible (30) et une entrée de gaz combustible (54) pour introduire un gaz combustible dans une zone d'écoulement de gaz combustible (46).

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