标题：Electrochemical growth of a corrosion-resistant multi-layer scale to enable an oxygen-evolution inert anode in molten carbonate

作者： Tang, DY (Tang, Diyong); Zheng, KY (Zheng, Kaiyuan); Yin, HY (Yin, Huayi); Mao, XH (Mao, Xuhui); Sadoway, DR (Sadoway, Donald R.); Wang, DH (Wang, Dihua)

来源出版物：ELECTROCHIMICA ACTA 卷：279 页码: 250-257  DOI：10.1016/j.electacta.2018.05.095    出版年：  JUL 20 2018

摘要：An in-situ formed three-layered scale consisting of a Cu-rich layer and two oxide layers on the surface of Ni10Cu11Fe alloy enables an inert anode for oxygen evolution reaction in molten Na2CO3-K2CO3. The outermost layer is mostly NiFe2O4, the middle layer mainly consists of NiO, and the innermost is a Curich metal layer. The dense NiFe2O4 layer is resistant to molten salts and prevents O2- diffusing inwards, the middle NiO layer conducts electrons and functions as a buffer layer to increase the mechanical robustness of the whole scale, and the third copper-rich layer could help to slow down the oxidation rate of the alloy. This low-cost inert anode with a multi-layered scale is able to survive for more than 600 h in molten Na2CO3-K2CO3 electrolysis cell, generating O-2 and thereby enabling a carbon-free electro-metallurgical process.

入藏号：WOS:000434007000029

文献类型：Article

语种：English

作者关键词：Nickel alloy; Anodic oxidation; Molten salt; High-temperature electrochemistry; Inert anode

扩展关键词： TEMPERATURE OXIDATION BEHAVIOR; ALUMINUM ELECTROLYSIS; NICKEL FERRITE; NI; CU; ALLOY; IRON; REDUCTION; KINETICS; OXIDES

通讯作者地址： Yin, HY (reprint author), MIT, Dept Mat Sci & Engn, Cambridge, MA 02139 USA.
Wang, DH (reprint author), Wuhan Univ, Sch Resource & Environm Sci, Wuhan 430072, Hubei, Peoples R China.

电子邮件地址： huayi@mit.edu; wangdh@whu.edu.cn

地址：

[Tang, Diyong; Zheng, Kaiyuan; Yin, Huayi; Mao, Xuhui; Wang, Dihua] Wuhan Univ, Hubei Int Sci & Technol Cooperat Base Sustainable, Sch Resource & Environm Sci, Wuhan 430072, Hubei, Peoples R China.
[Yin, Huayi; Sadoway, Donald R.] MIT, Dept Mat Sci & Engn, Cambridge, MA 02139 USA.

影响因子：4.798