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Electrocatalytic effect of the edge planes sites at graphite electrode on the vanadium redox couples
Wei, Guanjie; Su, Wei; Wei, Zengfu; Fan, Xinzhuang; Liu, Jianguo; Yan, Chuanwei; Fan, XZ; Liu, JG (reprint author), Chinese Acad Sci, Inst Met Res, Liaoning Engn Res Ctr Adv Battery Mat, Shenyang 110016, Peoples R China.
2016-06-20
Source PublicationELECTROCHIMICA ACTA
ISSN0013-4686
Volume204Pages:263-269
AbstractCompared with the basal-planes of highly oriented pyrolytic graphite (HOPG), the edge-planes of HOPG exhibit a significantly enhanced electrochemical performance, indicating of the better electrocatalytic activity of the edge-planes at graphite electrode toward vanadium redox reactions, especially for the positive reaction. In order to further investigate the electrocatalytic activity of the edge plane sites, glass carbon (GC) modified by graphite powders (GP) with different particle sizes, which possess different content of the edge-planes, are used as electrodes and their physicochemical properties such as the morphology, microstructure, surface composition, and specific surface area, in addition to the corresponding electrochemical characteristics have been characterized systematically. The total electrochemical activity toward vanadium redox reaction increases greatly with the decrease of the particle sizes for GP, which mainly attributes to the increasing surface area and exposed edge plane sites. It is worth note that a large surface area often means abundant edge plane sites, and it is mainly in favor of the enhancement of the current response, while the proportion of the active area such as the edge-planes in total surface area to a large extent determines the electrocatalytic activity. (C) 2016 Elsevier Ltd. All rights reserved.
description.department[wei, guanjie ; fan, xinzhuang ; liu, jianguo ; yan, chuanwei] chinese acad sci, inst met res, liaoning engn res ctr adv battery mat, shenyang 110016, peoples r china ; [su, wei ; wei, zengfu] guangdong power grid co ltd, elect power res inst, guangzhou 510080, guangdong, peoples r china
KeywordEdge Planes Graphite Powders Electrocatalytic Activity Electrochemical Response Vanadium Redox Couples
Subject AreaElectrochemistry
Funding OrganizationNational Basic Research Program of China [2010CB227203]
Indexed Bysci
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/75827
Collection中国科学院金属研究所
Corresponding AuthorFan, XZ; Liu, JG (reprint author), Chinese Acad Sci, Inst Met Res, Liaoning Engn Res Ctr Adv Battery Mat, Shenyang 110016, Peoples R China.
Recommended Citation
GB/T 7714
Wei, Guanjie,Su, Wei,Wei, Zengfu,et al. Electrocatalytic effect of the edge planes sites at graphite electrode on the vanadium redox couples[J]. ELECTROCHIMICA ACTA,2016,204:263-269.
APA Wei, Guanjie.,Su, Wei.,Wei, Zengfu.,Fan, Xinzhuang.,Liu, Jianguo.,...&Liu, JG .(2016).Electrocatalytic effect of the edge planes sites at graphite electrode on the vanadium redox couples.ELECTROCHIMICA ACTA,204,263-269.
MLA Wei, Guanjie,et al."Electrocatalytic effect of the edge planes sites at graphite electrode on the vanadium redox couples".ELECTROCHIMICA ACTA 204(2016):263-269.
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