Anodic oxidation of impure H{sub 2} on Teflon-bonded Pt-Ru/WO{sub 3}/C electrodes
- Univ. of Essex, Colchester (United Kingdom). Dept. of Chemistry and Biological Chemistry
There is a worldwide interest in the development and commercialization of reformer-solid polymer fuel cell systems for traction and on site cogeneration applications. Such fuel cell systems operate below 100 C and can use hydrocarbon fuels such as methanol or methane to produce impure H{sub 2} which may contain up to 2 volume percent (v/o) of CO. A series of carbon supported electrocatalysts, Pt/C, Pt/WO{sub 3}/C, Pt-Ru/C, and Pt-Ru/WO{sub 3}/C, were prepared by freeze drying and tested as Teflon-bonded electrodes in 0.5 M H{sub 2}SO{sub 4} in a stream of impure hydrogen containing 100 ppm of CO at 80 C. The first three catalysts were gradually poisoned and the performance was less than 100 mA/cm{sup 2} at 200 mV vs. SHE. However, there was no change in the performance of the Teflon-bonded Pt-Ru/WO{sub 3}/C electrode at 220 mA/cm{sup 2} over a test period of 6 h.
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 131752
- Journal Information:
- Journal of the Electrochemical Society, Vol. 142, Issue 10; Other Information: PBD: Oct 1995
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
SOLID ELECTROLYTE FUEL CELLS
ELECTROCATALYSTS
ALCOHOL FUEL CELLS
NATURAL GAS FUEL CELLS
POISONING
PERFORMANCE
HYDROGEN
OXIDATION
CHEMICAL PREPARATION
COMPARATIVE EVALUATIONS
PLATINUM
ACTIVATED CARBON
TUNGSTEN OXIDES
RUTHENIUM
CARBON MONOXIDE
REFORMER PROCESSES
HYDROGEN PRODUCTION
IMPURITIES