期刊
ELECTROCHIMICA ACTA
卷 177, 期 -, 页码 100-106出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2015.02.026
关键词
Palladium; fuel cells; X-ray absorption (XAS); ethanol; electrocatalysis
资金
- Ente Cassa di Risparmio di Firenze
Deactivation is one the main causes still preventing the full exploitation of palladium electrocatalysts in alkaline direct alcohol fuel cells and the electrochemical reforming of alcohols. While often attributed to the adsorption of poisoning species generated in the alcohols oxidation, in the present work we demonstrate that deactivation is provoked by the formation of palladium oxides. A combined approach including i) fuel cell runs, ii) cyclic voltammetry and iii) near edge X-ray absorption spectroscopy has enabled us to draw the conclusions reported in the paper. (C) 2015 Elsevier Ltd. All rights reserved.
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