In-situ investigation on the CO tolerance of carbon supported Pd-Pt electrocatalysts with low Pt content by electrochemical impedance spectroscopy

	In-situ investigation on the CO tolerance of carbon supported Pd-Pt electrocatalysts with low Pt content by electrochemical impedance spectroscopy
	Tang, Yongfu 1,2; Zhang, Huamin 1; Zhong, Hexiang 1; Xu, Zhuang 1,2
刊名	international journal of hydrogen energy
	2012-02-01
卷号	37 期号:3 页码:2129-2136
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)
通讯作者	张华民
产权排序	1,1
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.
学科主题	物理化学
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
关键词[WOS]	pem fuel-cells ; gas-diffusion electrodes ; h-2/co mixtures ; electrooxidation ; platinum ; oxidation ; methanol ; mechanism ; catalysts ; monoxide
收录类别	SCI
语种	英语
WOS记录号	WOS:000301157300007
公开日期	2013-10-11
内容类型	期刊论文
源URL	[http://159.226.238.44/handle/321008/118188]
专题	大连化学物理研究所_中国科学院大连化学物理研究所
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
推荐引用方式 GB/T 7714	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.
APA	Tang, Yongfu,Zhang, Huamin,Zhong, Hexiang,&Xu, Zhuang.(2012).In-situ investigation on the CO tolerance of carbon supported Pd-Pt electrocatalysts with low Pt content by electrochemical impedance spectroscopy.international journal of hydrogen energy,37(3),2129-2136.
MLA	Tang, Yongfu,et al."In-situ investigation on the CO tolerance of carbon supported Pd-Pt electrocatalysts with low Pt content by electrochemical impedance spectroscopy".international journal of hydrogen energy 37.3(2012):2129-2136.