Fuel cell separator and polymer electrolyte fuel cell

Details Fuel cell separator and polymer electrolyte fuel cell Fuel cell separator and polymer electrolyte fuel cell

H - Electricity

01

M

H01M 2/16 (2006.01) H01M 8/02 (2006.01) H01M 8/10 (2006.01)

Patent

CA 2351453

Disclosed is a fuel cell separator molded from a fuel cell separator composition mainly containing a conductive material and a binder, characterized in that said separator is specified such that after 3.5 g of a test piece cut from said fuel cell separator is put in 305 mL of pure water and the water is heated at 90°C for 500 hr, an electric conductivity of the water is 50 µS/cm or less. The fuel cell separator thus obtained is effective to reduce elution of ions and exhibit a high moldability and a high dimensional stability. Further, a polymer electrolyte fuel cell using the fuel cell separators is effective to exhibit a stable output without reduction in output during operation and enhance the operational efficiency.

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