EIS analysis on the anodic dissolution process of pure aluminum in an alkaline solution

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	EIS analysis on the anodic dissolution process of pure aluminum in an alkaline solution
	H. B. Shao ; J. Q. Zhang ; J. M. Wang ; C. N. Cao
刊名	Acta Physico-Chimica Sinica
	2003
卷号	19 期号:4 页码:372-375
关键词	pure aluminum alkaline solution anodic dissolution electrocal impedance spectrum (EIS) analysis impedance plane displays air batteries alloy anodes stability conditions steady-state corrosion inhibition
ISSN号	1000-6818
中文摘要	The EIS of the anodic dissolution process of pure aluminum in an alkaline solution was fitted using expression of Faradic admittance previously proposed by Cao([11-12]), based on which the mechanism of the process was proposed. The results show that the capacitive loop in low frequency region of EIS is caused by the reaction of Al(ss), and the inductive loop in middle frequency region is caused by the reaction of Al(OH)(ads). The time constants of Faradic admittance tau(1) and tau(2) mean the converting time of unit species Al(ss) and Al(OH)(ads) on unit bare surface site. Generally, tau(1) and tau(2) both decrease with the increase of the potential E. tau(1), > 0, tau(2) > 0, satisfy the conditions required by stability, and by Kramers-Kronig transforms as well. g(1) and g(2) relate to the variation of covering density of reactants Al(ss) and Al(OH) (ads). g(1) < 0 indicates that the aluminum surface tends to be passive when the potential increases.
原文出处	://WOS:000183709400020
公开日期	2012-04-14
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/36016]
专题	金属研究所_中国科学院金属研究所
推荐引用方式 GB/T 7714	H. B. Shao,J. Q. Zhang,J. M. Wang,et al. EIS analysis on the anodic dissolution process of pure aluminum in an alkaline solution[J]. Acta Physico-Chimica Sinica,2003,19(4):372-375.
APA	H. B. Shao,J. Q. Zhang,J. M. Wang,&C. N. Cao.(2003).EIS analysis on the anodic dissolution process of pure aluminum in an alkaline solution.Acta Physico-Chimica Sinica,19(4),372-375.
MLA	H. B. Shao,et al."EIS analysis on the anodic dissolution process of pure aluminum in an alkaline solution".Acta Physico-Chimica Sinica 19.4(2003):372-375.