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An electrochemically activated graphite electrode with excellent kinetics for electrode processes of V(II)/V(III) and V(IV)/V(V) couples in a vanadium redox flow battery
H. J. Liu; L. X. Yang; Q. Xu; C. W. Yan
2014
Source PublicationRsc Advances
ISSN2046-2069
Volume4Issue:98Pages:55666-55670
AbstractAn electrochemically activated graphite electrode (EAGE) was obtained by a simple and moderate method of anodic potentiostatic polarization. The composition, microstructure, and electrochemical properties of the EAGE were characterized by high-resolution X-ray photoelectron spectroscopy, high-resolution transmission electron microscopy, cyclic voltammetry and electrochemical impedance spectroscopy. The results show that the electrochemical activity and the reversibility for electrode processes of V(II)/V(III) and V(IV)/V(V) couples on the EAGE are significantly improved due to the introduced C=O and COOH groups. The rate constant of charge transfer for the anodic oxidation of V(IV) on the EAGE was determined to be 8.17 x 10(-4) cm s(-1), which is about 20 times larger than the 4.09 x 10(-5) cm s(-1) rate constant on the pristine graphite electrode.
description.department[liu, huijun ; yan, chuanwei] chinese acad sci, inst met res, lab corros & protect, shenyang 110016, peoples r china. [yang, lingxu ; xu, qian] northeastern univ, sch mat sci & met, shenyang, liaoning, peoples r china. ; liu, hj (reprint author), chinese acad sci, inst met res, lab corros & protect, shenyang 110016, peoples r china. ; liuhj@imr.ac.cn
KeywordCarbon-fiber Surfaces Chemical-modification Felt Electrodes Corrosion Behavior Cell Catalyst Progress
URL查看原文
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/73300
Collection中国科学院金属研究所
Recommended Citation
GB/T 7714
H. J. Liu,L. X. Yang,Q. Xu,et al. An electrochemically activated graphite electrode with excellent kinetics for electrode processes of V(II)/V(III) and V(IV)/V(V) couples in a vanadium redox flow battery[J]. Rsc Advances,2014,4(98):55666-55670.
APA H. J. Liu,L. X. Yang,Q. Xu,&C. W. Yan.(2014).An electrochemically activated graphite electrode with excellent kinetics for electrode processes of V(II)/V(III) and V(IV)/V(V) couples in a vanadium redox flow battery.Rsc Advances,4(98),55666-55670.
MLA H. J. Liu,et al."An electrochemically activated graphite electrode with excellent kinetics for electrode processes of V(II)/V(III) and V(IV)/V(V) couples in a vanadium redox flow battery".Rsc Advances 4.98(2014):55666-55670.
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