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学科主题: 物理化学
题名: In-situ investigation on the CO tolerance of carbon supported Pd-Pt electrocatalysts with low Pt content by electrochemical impedance spectroscopy
作者: Tang, Yongfu1, 2;  Zhang, Huamin1;  Zhong, Hexiang1;  Xu, Zhuang1, 2
通讯作者: 张华民
关键词: Proton exchange membrane fuel cells (PEMFCs) ;  Low-Pt catalysts ;  Pd-Pt electrocatalysts ;  Hydrogen oxidation reaction (HOR) ;  CO tolerance ;  Electrochemical impedance spectroscopy (EIS)
刊名: INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
发表日期: 2012-02-01
DOI: 10.1016/j.ijhydene.2011.10.104
卷: 37, 期:3, 页:2129-2136
收录类别: SCI
文章类型: Article
部门归属: DNL17
项目归属: DNL17
产权排名: 1,1
WOS标题词: Science & Technology ;  Physical Sciences ;  Technology
类目[WOS]: Chemistry, Physical ;  Electrochemistry ;  Energy & Fuels
研究领域[WOS]: Chemistry ;  Electrochemistry ;  Energy & Fuels
英文摘要: Carbon supported Pd-Pt electrocatalysts (Pd-Pt/C) with low Pt content were investigated in proton exchange membrane fuel cells (PEMFCs) with pure H-2 and CO/H-2 as the feeding fuels, respectively. The Pd-Pt/C catalysts showed high activity for hydrogen oxidation reaction (HOR) and improved CO tolerance. Electrochemical impedance spectroscopy (EIS) was employed to probe the in-situ information of the improved CO tolerance. The dependence of Nyquist plots and Bode plots on current density and feeding gas was investigated in low polarization region. The results of EIS analysis indicated that the improved CO tolerance of Pd-Pt/C catalysts can be attributed to the lower coverage of CO on the Pd-Pt bimetal than that on the pure Pt. Copyright (C) 2011, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
关键词[WOS]: PEM FUEL-CELLS ;  GAS-DIFFUSION ELECTRODES ;  H-2/CO MIXTURES ;  ELECTROOXIDATION ;  PLATINUM ;  OXIDATION ;  METHANOL ;  MECHANISM ;  CATALYSTS ;  MONOXIDE
语种: 英语
WOS记录号: WOS:000301157300007
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/118188
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, Div Energy Storage, Dalian 116023, Peoples R China
2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China

Recommended Citation:
Tang, Yongfu,Zhang, Huamin,Zhong, Hexiang,et al. In-situ investigation on the CO tolerance of carbon supported Pd-Pt electrocatalysts with low Pt content by electrochemical impedance spectroscopy[J]. INTERNATIONAL JOURNAL OF HYDROGEN ENERGY,2012,37(3):2129-2136.
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