Chemistry: electrical current producing apparatus – product – and – Having magnetic field feature
Patent
1988-12-05
1990-03-20
Skapars, Anthony
Chemistry: electrical current producing apparatus, product, and
Having magnetic field feature
429 17, H01M 804
Patent
active
049100998
ABSTRACT:
Proton exchange membrane (PEM) fuel cell performance with CO contamination of the H.sub.2 fuel stream is substantially improved by injecting O.sub.2 into the fuel stream ahead of the fuel cell. It is found that a surface reaction occurs even at PEM operating temperatures below about 100.degree. C. to oxidatively remove the CO and restore electrode surface area for the H.sub.2 reaction to generate current. Using an O.sub.2 injection, a suitable fuel stream for a PEM fuel cell can be formed from a methanol source using conventional reforming processes for producing H.sub.2.
REFERENCES:
patent: 4309359 (1982-01-01), Pino
patent: 4650727 (1987-03-01), Vanderborgh et al.
T. Engel et al., "Oxidation of Carbon Monoxide." The Chemical Physics of Solid Surfaces and Heterogeneous Catalysis, pp. 73-92, Elsevier Scientific Publishing Company, 1982.
Edson A. Ticianelli et al., "Localization of Platinum in Low Catalyst Loading Electrodes to Attain High Power Densities in SPE Fuel Cells." Los Alamos National Laboratory report LA-UR-88-121.
E. A. Ticianelli et al., "Electrode Materials and Processes for Energy Conversion and Storage," The Electrochemical Society, Inc., Proceedings vol. 87-12, pp. 166-175 (1987).
Shimson Gottesfeld et al., "A New Approach to the Problem of Carbon Monoxide Poisoning in Fuel Cells Operating at Low Temperatures," J. Electrochem. Soc. 135 No. 10, pp. 2651-2652 (Oct. 1988).
Gaetjens Paul D.
Moser William R.
Skapars Anthony
The United States of America as represented by the United States
Wilson Ray G.
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