期刊
ELECTROCHIMICA ACTA
卷 56, 期 5, 页码 2299-2305出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2010.11.101
关键词
PEMFC; Palladium; PdPtCo/C catalyst; Hydrogen oxidation; Oxygen reduction
资金
- Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq) [310151/2008-2]
To decrease the Pt content, a polymer electrolyte membrane fuel cell (PEMFC) was formed using a carbon supported Pd(96)Pt(4) catalyst as the anode material, and a carbon supported Pd(49)Pt(47)Co(4) catalyst as the cathode material. The as-obtained Pd-based PEMFC with an overall Pd:Pt:Co atomic composition of electrodes (anode + cathode) = 72:26:2 exhibited a performance not too far from that of the fuel cell with the conventional 100% Pt electrodes. With a Pt content of 35 wt% of that of the cell with full Pt electrodes, at a current density of 1 A cm(-2) the performance loss of the cell with the Pd-based catalysts was only 11%, with 6% ascribed to the anode catalyst and 5% to the cathode catalyst. The maximum power density of the Pd-based cell was 76% of that of the cell with Pt catalysts. (C) 2010 Elsevier Ltd. All rights reserved.
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