Separator for a fuel cell

Details Separator for a fuel cell Separator for a fuel cell

H - Electricity

01

M

H01M 2/14 (2006.01) H01M 2/16 (2006.01) H01M 8/02 (2006.01)

Patent

CA 2323167

In a separator for a fuel cell according to the invention, a separator is formed by a molding a bondcarbon compound in which a composition ratio of graphite powder is set to 60 to 90 %, and a composition ratio of a thermosetting resin is set to 10 to 40 %, and at least a top end face of each of ribs 11 contacting with the surface of an anode 2 or a cathode 3 is coated with a conductive film 14 made of a material which is lower in specific resistance than the bondcarbon compound. According to this configuration, while excellent moldability and high productivity are ensured by the use of the bondcarbon compound containing a larger content of a resin, the contact resistance with respect to an electrode is lowered so that the conductivity of the whole can be improved, and predetermined performance of a fuel cell can be surely exerted.

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