Enhancement of electrochemical properties on Pd-Cu/C electrocatalysts toward ethanol oxidation by atmosphere induced surface and structural alteration

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Title:	Enhancement of electrochemical properties on Pd-Cu/C electrocatalysts toward ethanol oxidation by atmosphere induced surface and structural alteration
Authors:	Kang,WD;Wei,YC;Liu,CW;Wang,KW
Contributors:	材料科學與工程研究所
Keywords:	OXYGEN REDUCTION ELECTROCATALYSTS;FUEL-CELLS;METHANOL OXIDATION;CATALYSTS;ACID
Date:	2011
Issue Date:	2012-03-27 16:29:01 (UTC+8)
Publisher:	國立中央大學
Abstract:	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.
Relation:	ELECTROCHEMISTRY COMMUNICATIONS
Appears in Collections:	[Institute of Materials Science and Engineering] journal & Dissertation

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