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

Chen Wei Liu, Yu Chen Wei, Kuan Wen Wang

研究成果: 雜誌貢獻期刊論文同行評審

25 引文 斯高帕斯(Scopus)

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.

原文???core.languages.en_GB???
頁(從 - 到)1362-1364
頁數3
期刊Electrochemistry Communications
11
發行號7
DOIs
出版狀態已出版 - 7月 2009

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