Preparation and surface characterization of Pt-Au/C cathode catalysts with ceria modification for oxygen reduction reaction

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题名:	Preparation and surface characterization of Pt-Au/C cathode catalysts with ceria modification for oxygen reduction reaction
作者:	Liu,CW;Wei,YC;Wang,KW
贡献者:	化學工程與材料工程學系
关键词:	METHANOL FUEL-CELLS;TEMPERATURE-PROGRAMMED REDUCTION;PLATINUM-RUTHENIUM CATALYST;ELECTROCATALYSTS;CARBON;CO;PROMOTION;PALLADIUM;ALLOYS;ANODE
日期:	2009
上传时间:	2010-06-29 17:27:36 (UTC+8)
出版者:	中央大學
摘要:	Alloy catalysts Of Pt50Au50/CexC with various Ce additions (x) were prepared for the oxygen reduction reaction (ORR). The characterization of the alloy structures, surface species, and electro-catalytic activities of prepared alloy catalysts were performed by XRD, temperature-programmed reduction (TPR), and rotating disc electrode (RDE) technique, respectively. The ORR activity of Pt50Au50/C alloy catalyst with a promotion of 15% CeO2 was enhanced significantly in comparison to the commercial Pt/C catalyst within the mixed kinetic-diffusion control region. The addition of CeO2 decreased the particle sizes, increased the dispersion and enhanced the surface segregation of Pt which resulting in an alloy surface with a moderate oxophilicity on alloy catalysts. (c) 2009 Elsevier B.V. All rights reserved.
關聯:	ELECTROCHEMISTRY COMMUNICATIONS
显示于类别:	[化學工程與材料工程研究所] 期刊論文

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