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The reduction reaction kinetics of vanadium(V) in acidic solutions on a platinum electrode with unusual difference compared to carbon electrodes
Wang, Wenjun; Fan, Xinzhuang; Qin, Ye; Liu, Jianguo; Yan, Chuanwei; Zeng, Chaoliu
Corresponding AuthorWang, Wenjun(wjwang10s@imr.ac.cn) ; Zeng, Chaoliu(clzeng@imr.ac.cn)
2018-09-01
Source PublicationELECTROCHIMICA ACTA
ISSN0013-4686
Volume283Pages:1313-1322
AbstractWith the consideration of understanding the interplays between the electrolyte and electrode for the V0+(2)/V0(2+) redox reactions at various electrodes and developing high-activity electrode materials for an all-vanadium redox flow battery, the reduction reaction kinetics of vanadium(V) ions on a platinum (Pt) electrode in comparison with that on carbon electrodes is investigated by steady-state potentiodynamic polarization and impedance spectroscopy measurements in sulfuric acid solutions with various pH and vanadium concentrations. No abnormal increase is observed neither in the cathodic Tafel slope nor the charge transfer resistance (R-ct) at a transition potential (E-k) on the Pt electrode. However, an abrupt change in the Tafel slope and R-ct of vanadium(V) ions is observed on carbon electrodes. The above results indicate that the reduction reaction kinetics of vanadium(V) ions in acidic solutions on the Pt electrode show some unusual difference with that on carbon electrodes, and this is the first study to report such a new phenomenon. Additionally, possible mechanism pathways for the reduction reaction of vanadium (V) ions in acidic solutions are proposed for the above-mentioned carbon and Pt electrodes in this work. (C) 2018 Elsevier Ltd. All rights reserved.
KeywordVanadium redox flow battery VO2+/VO2+ redox couple Reduction mechanism Carbon Platinum
Funding OrganizationNational Natural Science Foundation of China
DOI10.1016/j.electacta.2018.07.071
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[21573257]
WOS Research AreaElectrochemistry
WOS SubjectElectrochemistry
WOS IDWOS:000441077900143
PublisherPERGAMON-ELSEVIER SCIENCE LTD
Citation statistics
Cited Times:8[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/129136
Collection中国科学院金属研究所
Corresponding AuthorWang, Wenjun; Zeng, Chaoliu
AffiliationChinese Acad Sci, Inst Met Res, Lab Corros & Protect, 62 Wencui Rd, Shenyang 110016, Peoples R China
Recommended Citation
GB/T 7714
Wang, Wenjun,Fan, Xinzhuang,Qin, Ye,et al. The reduction reaction kinetics of vanadium(V) in acidic solutions on a platinum electrode with unusual difference compared to carbon electrodes[J]. ELECTROCHIMICA ACTA,2018,283:1313-1322.
APA Wang, Wenjun,Fan, Xinzhuang,Qin, Ye,Liu, Jianguo,Yan, Chuanwei,&Zeng, Chaoliu.(2018).The reduction reaction kinetics of vanadium(V) in acidic solutions on a platinum electrode with unusual difference compared to carbon electrodes.ELECTROCHIMICA ACTA,283,1313-1322.
MLA Wang, Wenjun,et al."The reduction reaction kinetics of vanadium(V) in acidic solutions on a platinum electrode with unusual difference compared to carbon electrodes".ELECTROCHIMICA ACTA 283(2018):1313-1322.
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