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On the development of metallic inert anode for molten CaCl2-CaO System
Yin, Huayi1; Gao, Lili1; Zhu, Hua1; Mao, Xuhui1; Gan, Fuxing1,2; Wang, Dihua1,2
Corresponding AuthorWang, Dihua(wangdh@whu.edu.cn)
2011-03-30
Source PublicationELECTROCHIMICA ACTA
ISSN0013-4686
Volume56Issue:9Pages:3296-3302
AbstractSome fundamental aspects related to inert anode development in molten CaCl2-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, Fe2O3, Cr2O3, Co3O4, NiFe2O4) in pure CaCl2 or CaCl2-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 Fe2O3 increased. Ni coated with NiO film had much higher stability during anodic polarization. (C) 2011 Elsevier Ltd. All rights reserved.
KeywordInert anode Anodic behavior Chloride melts Solubility of oxide
Funding OrganizationNational Nature Science Foundation of China ; Program for New Century Excellent Talents in University ; Ministry of Education of China ; International Cooperation Foundation ; Ministry of Science and Technology of China
DOI10.1016/j.electacta.2011.01.026
Indexed BySCI
Language英语
Funding ProjectNational Nature Science Foundation of China[20873093] ; National Nature Science Foundation of China[50934001] ; Program for New Century Excellent Talents in University ; Ministry of Education of China[NCET-08-0416] ; International Cooperation Foundation ; Ministry of Science and Technology of China[2009DFA62190]
WOS Research AreaElectrochemistry
WOS SubjectElectrochemistry
WOS IDWOS:000290084700026
PublisherPERGAMON-ELSEVIER SCIENCE LTD
Citation statistics
Cited Times:39[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/106165
Collection中国科学院金属研究所
Corresponding AuthorWang, Dihua
Affiliation1.Wuhan Univ, Sch Resource & Environm Sci, Wuhan 430072, Peoples R China
2.Chinese Acad Sci, Inst Met Res, State Key Lab Corros & Protect, Shenyang 110016, Peoples R China
Recommended Citation
GB/T 7714
Yin, Huayi,Gao, Lili,Zhu, Hua,et al. On the development of metallic inert anode for molten CaCl2-CaO System[J]. ELECTROCHIMICA ACTA,2011,56(9):3296-3302.
APA Yin, Huayi,Gao, Lili,Zhu, Hua,Mao, Xuhui,Gan, Fuxing,&Wang, Dihua.(2011).On the development of metallic inert anode for molten CaCl2-CaO System.ELECTROCHIMICA ACTA,56(9),3296-3302.
MLA Yin, Huayi,et al."On the development of metallic inert anode for molten CaCl2-CaO System".ELECTROCHIMICA ACTA 56.9(2011):3296-3302.
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