Bipolar fuel cell
This patent describes an improvement in a fuel cell stack comprising two or more fuel cells each having a catalytic anode and a catalytic cathode in contact with opposite surfaces of an ion transporting membrane, a wet-proofed carbon paper bonded to the cathode surface opposite the membrane, a bipolar separator in contact with the wet-proofed carbon paper and forming an oxidant flow field, the bipolar separator being in electrical contact with the anode of a second fuel cell. The improvement comprises a plurality of electrically conductive screens between and in electrical contact with the wet-proofed carbon paper and the bipolar separator resulting in improved product water removal and improved fuel cell performance.
- Assignee:
- United Technologies Corp., Hartford, CT
- Patent Number(s):
- US 4855193
- Application Number:
- PPN: US 7132697A
- OSTI ID:
- 5385204
- Country of Publication:
- United States
- Language:
- English
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