Multi-walled carbon nanotubes used as an electrode reaction catalyst for VO(2)(+)/VO(2+) for a vanadium redox flow battery

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	Multi-walled carbon nanotubes used as an electrode reaction catalyst for VO(2)(+)/VO(2+) for a vanadium redox flow battery
	W. Y. Li; J. G. Liu; C. W. Yan
	2011
发表期刊	Carbon
ISSN	0008-6223
卷号	49 期号:11 页码:3463-3470
摘要	Pristine multi-walled carbon nanotubes (MWCNTs), and those functionalized with hydroxyl groups, or carboxyl groups were used as electrode reaction catalyst for VO(2)(+)/VO(2+) 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 VO(2)(+)/VO(2+) redox reactions. (C) 2011 Elsevier Ltd. All rights reserved.
部门归属	[li, wenyue; liu, jianguo; yan, chuanwei] chinese acad sci, inst met res, state key lab corros & protect, shenyang 110016, peoples r china.;yan, cw (reprint author), chinese acad sci, inst met res, state key lab corros & protect, shenyang 110016, peoples r china;cwyan@imr.ac.cn
关键词	Lithium-ion Batteries Cell
URL	查看原文
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/30487
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	W. Y. Li,J. G. Liu,C. W. Yan. Multi-walled carbon nanotubes used as an electrode reaction catalyst for VO(2)(+)/VO(2+) for a vanadium redox flow battery[J]. Carbon,2011,49(11):3463-3470.
APA	W. Y. Li,J. G. Liu,&C. W. Yan.(2011).Multi-walled carbon nanotubes used as an electrode reaction catalyst for VO(2)(+)/VO(2+) for a vanadium redox flow battery.Carbon,49(11),3463-3470.
MLA	W. Y. Li,et al."Multi-walled carbon nanotubes used as an electrode reaction catalyst for VO(2)(+)/VO(2+) for a vanadium redox flow battery".Carbon 49.11(2011):3463-3470.