On the development of metallic inert anode for molten CaCl(2)-CaO System

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	On the development of metallic inert anode for molten CaCl(2)-CaO System
	H. Y. Yin; L. L. Gao; H. Zhu; X. H. Mao; F. X. Gan; D. H. Wang
	2011
发表期刊	Electrochimica Acta
ISSN	0013-4686
卷号	56 期号:9 页码:3296-3302
摘要	Some fundamental aspects related to inert anode development in molten CaCl(2)-CaO were investigated based on thermodynamic analysis, electrochemistry of metals and solubility of oxide measurements. The Gibbs free energy change of several key anodic reactions including electro-stripping of metals, electro-formation of metallic oxides, electro-dissolution of metallic oxides as well as oxygen and chlorine evolution was calculated and documented, for the first time, as a reference to develop metallic inert anode in chloride based melts. The anodic behaviors of typical metals (Ni, Fe, Co, Mo, Cu, Ag, and Pt) in the melt were investigated. The results confirmed the thermodynamic stability order of metals in the melts and revealed that surface oxide formation can increase the stability of the electrodes in CaO containing melt. Furthermore, solubility of several oxides (NiO, Fe(2)O(3), Cr(2)O(3), Co(3)O(4), NiFe(2)O(4)) in pure CaCl(2) or CaCl(2)-CaO melts was measured to evaluate the stability of oxide coating or a cermet inert anode in the melt. It was found that the solubility of NiO decreased with increasing CaO concentration, while that of Fe(2)O(3) increased. Ni coated with NiO film had much higher stability during anodic polarization. (C) 2011 Elsevier Ltd. All rights reserved.
部门归属	[yin, huayi; gao, lili; zhu, hua; mao, xuhui; gan, fuxing; wang, dihua] wuhan univ, sch resource & environm sci, wuhan 430072, peoples r china. [gan, fuxing; wang, dihua] chinese acad sci, inst met res, state key lab corros & protect, shenyang 110016, peoples r china.;wang, dh (reprint author), wuhan univ, sch resource & environm sci, wuhan 430072, peoples r china;wangdh@whu.edu.cn
关键词	Inert Anode Anodic Behavior Chloride Melts Solubility Of Oxide Cryolite-alumina Melts Electrochemical Reduction Calcium-chloride Nickel Ferrite Cao-cacl2 Melt Part i Electrolysis Titanium Solubility Mechanism
URL	查看原文
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/30844
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	H. Y. Yin,L. L. Gao,H. Zhu,et al. On the development of metallic inert anode for molten CaCl(2)-CaO System[J]. Electrochimica Acta,2011,56(9):3296-3302.
APA	H. Y. Yin,L. L. Gao,H. Zhu,X. H. Mao,F. X. Gan,&D. H. Wang.(2011).On the development of metallic inert anode for molten CaCl(2)-CaO System.Electrochimica Acta,56(9),3296-3302.
MLA	H. Y. Yin,et al."On the development of metallic inert anode for molten CaCl(2)-CaO System".Electrochimica Acta 56.9(2011):3296-3302.