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Modified multiwalled carbon nanotubes as an electrode reaction catalyst for an all vanadium redox flow battery
W. Y. Li; J. G. Liu; C. W. Yan
2013
Source PublicationJournal of Solid State Electrochemistry
ISSN1432-8488
Volume17Issue:5Pages:1369-1376
AbstractDifferent modified multiwalled carbon nanotubes (MWCNTs) are prepared by heat treatments in the air and in the H2SO4+HNO3 (1:1) mixed acids which are investigated by transmission electron microscopy, X-ray photoelectron spectroscopy, X-ray diffraction, Brunaur-Emmett-Teller, and cyclic voltammetry measurements. The results show the physicochemical properties of MWCNTs change significantly after these different modification processes, especially the electrochemical catalytic activity towards the VO2+/VO2+ and V3+/V2+ redox pairs. The MWCNTs treated in the air at 600 degrees C for 30 min shows better electrochemical performances for the VO2+/VO2+ redox reactions (58.8 and -32.4 mu A for the oxidation and reduction peaks at 10 mV s(-1), respectively) than any other samples. Compared with the V3+/V2+ redox couple, the VO2+/VO2+ redox reactions are more easily affected by the physicochemical property changes of the MWCNTs. The enhanced electrochemical catalytic activity of the modified MWCNTs is not only related to the surface oxygen content, but also to the specific surface area, conductivity and the unique structure variations of the MWCNTs. The investigation demonstrated that the modified MWCNTs have a promising future application in the vanadium redox flow battery.
description.department[li, wenyue ; liu, jianguo ; yan, chuanwei] chinese acad sci, inst met res, state key lab corros & protect, shenyang 110016, peoples r china. ; liu, jg (reprint author), chinese acad sci, inst met res, state key lab corros & protect, shenyang 110016, peoples r china. ; jgliu@imr.ac.cn
KeywordVanadiumredox Flow Battery Modified Multiwalled Carbon Nanotubes Electrochemical Catalytic Activity Positive Electrode Chemical-modification Conductivity Performance vo2+/vo2+ Graphene Oxide Felt Xps Ir
URL查看原文
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/71333
Collection中国科学院金属研究所
Recommended Citation
GB/T 7714
W. Y. Li,J. G. Liu,C. W. Yan. Modified multiwalled carbon nanotubes as an electrode reaction catalyst for an all vanadium redox flow battery[J]. Journal of Solid State Electrochemistry,2013,17(5):1369-1376.
APA W. Y. Li,J. G. Liu,&C. W. Yan.(2013).Modified multiwalled carbon nanotubes as an electrode reaction catalyst for an all vanadium redox flow battery.Journal of Solid State Electrochemistry,17(5),1369-1376.
MLA W. Y. Li,et al."Modified multiwalled carbon nanotubes as an electrode reaction catalyst for an all vanadium redox flow battery".Journal of Solid State Electrochemistry 17.5(2013):1369-1376.
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