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Effect of Electrochemical Factors on Formation and Reduction of Silver Oxides
Y. Wan; X. L. Wang; S. Y. Liu; Y. B. Li; H. Sun; Q. Wang
2013
Source PublicationInternational Journal of Electrochemical Science
ISSN1452-3981
Volume8Issue:12Pages:12837-12850
AbstractPolarization of silver in NaOH solution with various electrochemical parameters was investigated by cyclic voltammetry and scanning electron microscope. The resulting cyclic voltammograms reveal that the observed midpoint potential and current density of the peaks during the anodic scan and the reversed scan can be shifted significantly depending on scan rate and NaOH concentration. The shapes of the peaks in the first cycle were different from the other cycles of silver' cyclic voltammetry. The peaks were barely dependent of scan rate since the second cycle. Two layers of Ag2O, which owed to the formation of dual anodic peaks of Ag2O, appeared during the anodic scan of silver' cyclic voltammetry. Two secondary anodic peaks were formed if the scan rate was no less than 20 mV/s and NaOH concentration was no less than 0.5 mol.L-1 The trenched images by focus ion beam system explored that the depth of the polarized silver was approximately 810 nm after three cycles with a scan rate of 10 mV/s in 1 mol.L-1 NaOH solution. The images of the polarized silver clarified the formation and shifts of the peaks in silver's cyclic voltammetry.
description.department[wan, ye ; li, yanbo ; wang, qing] shenyang jianzhu univ, sch mat sci & engn, shenyang 110168, peoples r china. [wan, ye ; wang, xianle ; liu, siyu ; sun, hong] shenyang jianzhu univ, sch traff & mech engn, shenyang 110168, peoples r china. [wan, ye] chinese acad sci, inst met res, state key lab corros & protect, shenyang 110016, peoples r china. ; wan, y (reprint author), shenyang jianzhu univ, sch mat sci & engn, shenyang 110168, peoples r china. ; ywan@sjzu.edu.cn
KeywordSilver Cyclic Voltammetry Anodic Peak Reduction Peak Focus Ion Beam Alkaline-solution Anodic-oxidation Cyclic Voltammetry Initial-stages Impedance Electrodes Koh Dissolution Kinetics Ag2o
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Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/71510
Collection中国科学院金属研究所
Recommended Citation
GB/T 7714
Y. Wan,X. L. Wang,S. Y. Liu,et al. Effect of Electrochemical Factors on Formation and Reduction of Silver Oxides[J]. International Journal of Electrochemical Science,2013,8(12):12837-12850.
APA Y. Wan,X. L. Wang,S. Y. Liu,Y. B. Li,H. Sun,&Q. Wang.(2013).Effect of Electrochemical Factors on Formation and Reduction of Silver Oxides.International Journal of Electrochemical Science,8(12),12837-12850.
MLA Y. Wan,et al."Effect of Electrochemical Factors on Formation and Reduction of Silver Oxides".International Journal of Electrochemical Science 8.12(2013):12837-12850.
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