DICP OpenIR
Kinetic study of the formation of oxygen vacancy on lanthanum manganite electrodes
Jiang, Y; Wang, SZ; Zhang, YH; Yan, JW; Li, WZ
Source PublicationJOURNAL OF THE ELECTROCHEMICAL SOCIETY
1998-02-01
Volume145Issue:2Pages:373-378
Indexed BySCI
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
WOS SubjectElectrochemistry ; Materials Science, Coatings & Films
WOS Research AreaElectrochemistry ; Materials Science
WOS KeywordSTABILIZED ZIRCONIA ; IMPEDANCE SPECTROSCOPY ; OXIDE ; REDUCTION ; CELL
AbstractThe 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.
Language英语
WOS IDWOS:000071969500007
Citation statistics
Cited Times:97[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/138192
Collection中国科学院大连化学物理研究所
AffiliationChinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Peoples R China
Recommended Citation
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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