期刊
FUEL CELLS
卷 9, 期 2, 页码 114-120出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/fuce.200800074
关键词
Catalyst; Electronic Effect; Electrooxidation; Formic Acid; PdSn/C
资金
- State Key Fundamental Research Program of China [G2000026408]
- State Key High Technology Research Program of China [2007AA05Z159, 2007AA05Z143]
- Nature Science Foundation of China [20433060, 20703043]
PdSn/C catalysts with different atomic ratios of Pd to Sn were synthesised by a NaBH4 reduction method. Electrochemical tests show that the alloy catalysts exhibit significantly higher catalytic activity and stability for formic acid electrooxidation (FAEO) than the Pd/C catalyst prepared with the same method. XRD and TEM indicate that a particle-size effect is not the main cause for the high performance. XPS confirms that Pd is modified by Sn through an electronic effect which can decrease the adsorption strength of poisonous intermediates on Pd and thus promote the FAEO greatly.
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