Membrane for fuel cell, and fuel cell incorporating that...

Chemistry: electrical current producing apparatus – product – and – With pressure equalizing means for liquid immersion operation

Reexamination Certificate

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Details

C429S314000, C429S316000, C252S062200

Reexamination Certificate

active

06878475

ABSTRACT:
A proton exchange membrane for a fuel cell is prepared from a polyimidazole polymer having the formula:wherein R1-R3are independently H, a halogen, an alkyl or a substituted alkyl. X1and X2are independently or an electron withdrawing group such as CN. The membrane may be doped to alter its conductivity. The membrane may be prepared from a copolymer of the polyimidazole. Also disclosed is a fuel cell incorporating the membrane.

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