Characteristics of the Activity Loss of Anode Catalyst in DMFC

IMR OpenIR

	Characteristics of the Activity Loss of Anode Catalyst in DMFC
其他题名	Characteristics of the Activity Loss of Anode Catalyst in DMFC
	Chen Weimin 1; Jin Wenying 3
	2012
发表期刊	RARE METAL MATERIALS AND ENGINEERING
ISSN	1002-185X
卷号	41 期号:9 页码:1633-1637
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.
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
收录类别	CSCD
语种	英语
CSCD记录号	CSCD:4641707
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/148763
专题	中国科学院金属研究所
作者单位	1.沈阳理工大学 2.中国科学院金属研究所 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.