Characteristics of the Activity Loss of Anode Catalyst in DMFC

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	Characteristics of the Activity Loss of Anode Catalyst in DMFC
	Chen Weimin 2; Jin Wenying 3
刊名	RARE METAL MATERIALS AND ENGINEERING
	2012
卷号	41 期号:9 页码:1633-1637
关键词	METHANOL FUEL-CELLS MEMBRANE-ELECTRODE ASSEMBLIES ADSORBED CO DEGRADATION PERFORMANCE DURABILITY PTRU ELECTROOXIDATION ELECTROCATALYST SPECTROSCOPY direct methanol fuel cell (DMFC) electrocatalyst PtRu/C aging
ISSN号	1002-185X
其他题名	Characteristics of the Activity Loss of Anode Catalyst in DMFC
英文摘要	The activity loss anode PtRu/C catalyst in direct methanol fuel cell (DMFC) was examined by an electrochemical aging test. The results show that after the aging test, the activity of PtRu/C catalyst toward methanol oxidation decreased obviously. The transmission electron microscopy and X-ray diffraction analysis display that catalyst particles experienced Otswald ripening and directional migration under the electric field during the aging test. The electrochemical impedance spectra show that after the aging test, both the ohmic resistance and the polarization impedance increased remarkably, which is related to the loss of active components. The energy dispersive X-ray analysis shows that the mass ratio of Pt to Ru in the catalyst layer increased noticeably after the test. It is suggested that the loss of active components due to the potential fluctuation is an important factor responsible for the activity loss of the anode catalyst in DMFC.
语种	英语
CSCD记录号	CSCD:4641707
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/148762]
专题	金属研究所_中国科学院金属研究所
作者单位	1.中国科学院金属研究所 2.沈阳理工大学 3.Guilin University Technol, Guilin 541004, Peoples R China
推荐引用方式 GB/T 7714	Chen Weimin,Jin Wenying. Characteristics of the Activity Loss of Anode Catalyst in DMFC[J]. RARE METAL MATERIALS AND ENGINEERING,2012,41(9):1633-1637.
APA	Chen Weimin,&Jin Wenying.(2012).Characteristics of the Activity Loss of Anode Catalyst in DMFC.RARE METAL MATERIALS AND ENGINEERING,41(9),1633-1637.
MLA	Chen Weimin,et al."Characteristics of the Activity Loss of Anode Catalyst in DMFC".RARE METAL MATERIALS AND ENGINEERING 41.9(2012):1633-1637.