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Kinetic study of the formation of oxygen vacancy on lanthanum manganite electrodes
Jiang, Y; Wang, SZ; Zhang, YH; Yan, JW; Li, WZ
刊名JOURNAL OF THE ELECTROCHEMICAL SOCIETY
1998-02-01
145期:2页:373-378
收录类别SCI
文章类型Article
WOS标题词Science & Technology ; Physical Sciences ; Technology
类目[WOS]Electrochemistry ; Materials Science, Coatings & Films
研究领域[WOS]Electrochemistry ; Materials Science
关键词[WOS]STABILIZED ZIRCONIA ; IMPEDANCE SPECTROSCOPY ; OXIDE ; REDUCTION ; CELL
英文摘要The electrochemical reduction of oxygen on lanthanum manganite (LSM) electrodes has been investigated by cyclic voltammetry, alternating current (ac) impedance, and, in particular, potential step. An emphasis was given to the study of the kinetics of the formation of oxygen vacancy, which is shown to be the main cause for the reversed hysteresis in cyclic voltammograms and for the increase in the electrochemical activity of oxygen reduction on the cathodically polarized LSM electrode observed in both ac impedance and in potential step experiments. The potential step experiments show that the oxygen vacancy concentration increases exponentially with time when the LSM is under a cathodic polarization. In the present study, the rate controlling step for the formation of oxygen vacancies is the oxygen vacancy generation step. The cathodic current rising from the reaction on oxygen vacancies can make a significant contribution to the total reduction current.
语种英语
WOS记录号WOS:000071969500007
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被引频次:95[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/138192
专题中国科学院大连化学物理研究所
作者单位Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Peoples R China
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GB/T 7714
Jiang, Y,Wang, SZ,Zhang, YH,et al. Kinetic study of the formation of oxygen vacancy on lanthanum manganite electrodes[J]. JOURNAL OF THE ELECTROCHEMICAL SOCIETY,1998,145(2):373-378.
APA Jiang, Y,Wang, SZ,Zhang, YH,Yan, JW,&Li, WZ.(1998).Kinetic study of the formation of oxygen vacancy on lanthanum manganite electrodes.JOURNAL OF THE ELECTROCHEMICAL SOCIETY,145(2),373-378.
MLA Jiang, Y,et al."Kinetic study of the formation of oxygen vacancy on lanthanum manganite electrodes".JOURNAL OF THE ELECTROCHEMICAL SOCIETY 145.2(1998):373-378.
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