Actions for Evaluation of PEMFC System Contaminants on the Performance of Pt Catalyst via Cyclic Voltammetry [electronic resource] : Preprint

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Evaluation of PEMFC System Contaminants on the Performance of Pt Catalyst via Cyclic Voltammetry [electronic resource] : Preprint

Published
Washington, D.C. : United States. Dept. of Energy. Office of Energy Efficiency and Renewable Energy, 2012.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Physical Description
13 pages : digital, PDF file
Additional Creators
National Renewable Energy Laboratory (U.S.), United States. Department of Energy. Office of Energy Efficiency and Renewable Energy, and United States. Department of Energy. Office of Scientific and Technical Information
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Summary
Using electrochemical cyclic voltammetry as a quick ex-situ screening tool, the impact of the extracted solution and the individual leachable constituents from prospective BOP component materials on the performance and recoverability of the platinum catalyst were evaluated. Taking an extract from Zytel{trademark} HTN51G35HSLR (PPA) as an example, the major leachable organic components are caprolactam and 1,6 hexanediol. While these organic compounds by themselves do poison the Pt catalyst to some extent, such influence is mostly recoverable by means of potential holding and potential cycling. The extracted solution, however, shows a more drastic poisoning effect and it was not recoverable. Therefore the non-recoverable poisoning effect observed for the extracted solution is not from the two organic species studied. This demonstrates the complexity of such a contaminant study. Inorganic compounds that are known poisons like sulfur even in very low concentrations, may have a more dominant effect on the Pt catalyst and the recoverability.
Report Numbers
E 1.99:nrel/cp-5600-55580
nrel/cp-5600-55580
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Note
Published through SciTech Connect.
07/01/2012.
"nrel/cp-5600-55580"
To be presented at PRIME 2012, 7-12 October 2012, Honolulu, Hawaii.
Wang, H.; Dinh, H. N.; Macomber, C.
Funding Information
AC36-08GO28308
View MARC record | catkey: 14389850