Multi-walled carbon nanotubes used as an electrode reaction catalyst for VO2+/VO2+ for a vanadium redox flow battery

doi:10.1016/j.carbon.2011.04.045

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	Multi-walled carbon nanotubes used as an electrode reaction catalyst for VO2+/VO2+ for a vanadium redox flow battery
	Li, Wenyue; Liu, Jianguo; Yan, Chuanwei
刊名	CARBON
	2011-09-01
卷号	49 期号:11 页码:3463-3470
ISSN号	0008-6223
DOI	10.1016/j.carbon.2011.04.045
通讯作者	Yan, Chuanwei(cwyan@imr.ac.cn)
英文摘要	Pristine multi-walled carbon nanotubes (MWCNTs), and those functionalized with hydroxyl groups, or carboxyl groups were used as electrode reaction catalyst for VO2+/VO2+ redox couples for vanadium redox flow battery. The structure, composition, electrochemical properties and battery performance were characterized with scanning electron microscopy, X-ray photoelectron spectroscopy, cyclic voltammetry and cell charge-discharge tests. The electrochemical activities of the redox couple are greatly increased over those of modified glassy carbon electrodes and the electrocatalytic kinetics of the redox reactions are in the order of carboxyl MWCNTs > hydroxyl MWCNTs > pristine MWCNTs. The peak currents of the redox reactions (63.8 and -51.1 mu A for oxidation and reduction processes, respectively) on the electrode modified by carboxyl MWCNTs are about three times those for the other electrodes. The battery exhibits excellent storage efficiency when the carboxyl MWCNTs were used as positive electrode reaction catalyst, suggesting the oxygen functional groups especially the carboxyl can significantly facilitate the VO2+/VO2+ redox reactions. (C) 2011 Elsevier Ltd. All rights reserved.
资助项目	National Basic Research Program of China[2010CB227203]
WOS研究方向	Chemistry ; Materials Science
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000292663400008
资助机构	National Basic Research Program of China
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/103535]
专题	金属研究所_中国科学院金属研究所
通讯作者	Yan, Chuanwei
作者单位	Chinese Acad Sci, Inst Met Res, State Key Lab Corros & Protect, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Li, Wenyue,Liu, Jianguo,Yan, Chuanwei. Multi-walled carbon nanotubes used as an electrode reaction catalyst for VO2+/VO2+ for a vanadium redox flow battery[J]. CARBON,2011,49(11):3463-3470.
APA	Li, Wenyue,Liu, Jianguo,&Yan, Chuanwei.(2011).Multi-walled carbon nanotubes used as an electrode reaction catalyst for VO2+/VO2+ for a vanadium redox flow battery.CARBON,49(11),3463-3470.
MLA	Li, Wenyue,et al."Multi-walled carbon nanotubes used as an electrode reaction catalyst for VO2+/VO2+ for a vanadium redox flow battery".CARBON 49.11(2011):3463-3470.