H - Electricity – 01 – M
Patent
H - Electricity
01
M
H01M 8/02 (2006.01) C23C 30/00 (2006.01) C23F 11/00 (2006.01)
Patent
CA 2596198
The present invention relates to a metallic bipolar plate for fuel cells, including: a plate-like metallic substrate containing a metal capable of being passivated; and a noble-metal layer disposed partially on both surfaces of the metallic substrate to coat the metallic substrate, the metallic bipolar plate having a concave-convex portion formed at least in a region facing an electrode of a membrane electrode assembly, in which both surfaces of the metallic bipolar plate respectively have a contact surface which contacts with the electrode and a non-contact surface which does not contact with the electrode, and in which both surfaces of the metallic bipolar plate respectively have a coating area ratio of the noble-metal layer to the contact surface within a range of from 20% to 100%, and a coating area ratio of the noble-metal layer to the non-contact surface within a range of from 5% or more but less than 100%.
Hisada Tatsuo
Huto Masayoshi
Takagi Shinobu
Daido Tokushuko Kabushiki Kaisha
Riches Mckenzie & Herbert Llp
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