期刊
ELECTROCHEMISTRY COMMUNICATIONS
卷 13, 期 2, 页码 162-165出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/j.elecom.2010.12.003
关键词
Pd-Cu/C catalysts; CO treatment; Ethanol oxidation reaction (EOR); Degree of alloying; PdO; Alkaline solution
资金
- National Science Council of Taiwan [99-2221-E-008-058]
The preparation and modification of high effective Pd-Cu/C electrocatalysts toward ethanol oxidation reaction (EOR) in alkaline solution are investigated. A simple strategy through atmosphere-induced surface/structural modification is applied to promote their electrochemical performance. The alterations of EOR activities, structures and surface species of the prepared catalysts induced by H-2, O-2 or CO treatments are analyzed by CV, XRD and XPS techniques, respectively. It is observed that the degree of Pd-Cu alloying, surface Pd oxidation, CO oxidation and EOR activity are all promoted by the CO treatment at 470 K and the current density at -0.2 V of the as-prepared sample is enhanced about 190% due to the formation of perfect alloy core/PdO shell structure. (C) 2010 Elsevier B.V. All rights reserved.
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