Analyses on Declining Performance of PEMFC with Fuel Containing Impurities
| Autor: | Katsuhiko Wakabayashi, Morimasa Hayashida, Yushi Kamiya, Kazuyuki Narusawa, Daisuke Kurashima |
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| Rok vydání: | 2003 |
| Předmět: |
Fluid Flow and Transfer Processes
Carbon Monoxide Materials science Waste management Hydrogen Mechanical Engineering Analytical chemistry Proton exchange membrane fuel cell chemistry.chemical_element Catalyst poisoning chemistry.chemical_compound Adsorption chemistry Operating temperature Automobile Catalyzer Fuel Cell Desorption Hydrogen fuel Alternative Energy Physical and Theoretical Chemistry Carbon monoxide |
| Zdroj: | JSME International Journal Series B. 46:643-649 |
| ISSN: | 1347-5371 1340-8054 |
| DOI: | 10.1299/jsmeb.46.643 |
| Popis: | This paper covers our investigation into a decline in FC performance resulting from hydrogen fuel containing CO. Several investigations were conducted into the dependence of CO poisoning on types of catalyst using Pt and Pt-Ru alloy. The investigations are summarized as follows : 1) The poisoning prediction formulas and the poisoning estimation coefficient to predict and estimate the performance were derived theoretically. 2) The actual process of CO poisoning was scrutinized by focusing on adsorption of CO and desorption of CO_2 molecules, and changes of several polarizations caused by CO poisoning were estimated. 3) Investigations into the relationship between the CO concentration, operating pressure, operating temperature and the CO poisoning were carried out. If the FC was operated at a high CO concentration, no significant improvement could be expected when using increased pressure, and further, the effects of the operating temperature is almost the same for the two types of catalyst. |
| Databáze: | OpenAIRE |
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