标题：The electrochemical reduction processes of solid compounds in high temperature molten salts作者：Xiao, Wei; Wang, Dihua

来源出版物：CHEMICAL SOCIETY REVIEWS 卷：43 期：10 页：3215-3228 DOI：10.1039/c3cs60327j 出版年：2014

摘要：Solid electrode processes fall in the central focus of electrochemistry due to their broad-based applications in electrochemical energy storage/conversion devices, sensors and electrochemical preparation. The electrolytic production of metals, alloys, semiconductors and oxides via the electrochemical reduction of solid compounds (especially solid oxides) in high temperature molten salts has been well demonstrated to be an effective and environmentally friendly process for refractory metal extraction, functional materials preparation as well as spent fuel reprocessing. The (electro) chemical reduction of solid compounds under cathodic polarizations generally accompanies a variety of changes at the cathode/melt electrochemical interface which result in diverse electrolytic products with different compositions, morphologies and microstructures. This report summarizes various (electro) chemical reactions taking place at the compound cathode/melt interface during the electrochemical reduction of solid compounds in molten salts, which mainly include: (1) the direct electro-deoxidation of solid oxides; (2) the deposition of the active metal together with the electrochemical reduction of solid oxides; (3) the electro-inclusion of cations from molten salts; (4) the dissolution-electrodeposition process, and (5) the electron hopping process and carbon deposition with the utilization of carbon-based anodes. The implications of the forenamed cathodic reactions on the energy efficiency, chemical compositions and microstructures of the electrolytic products are also discussed. We hope that a comprehensive understanding of the cathodic processes during the electrochemical reduction of solid compounds in molten salts could form a basis for developing a clean, energy efficient and affordable production process for advanced/engineering materials.

入藏号：WOS:000335014000001

文献类型：Review

语种：English

扩展关键词：IN-SITU ELECTROLYSIS; CALCIOTHERMIC REDUCTION; 3-PHASE INTERLINES; OXIDE PRECURSORS; CALCIUM-CHLORIDE; TUNGSTEN POWDER; CACL2; DEOXIDATION; TITANIUM; TIO2

通讯作者地址：Wang, Dihua; Wuhan Univ, Sch Resource & Environm Sci, Wuhan 430072, Peoples R China.

电子邮件地址：wangdh@whu.edu.cn

地址：

[Xiao, Wei; Wang, Dihua] Wuhan Univ, Sch Resource & Environm Sci, Wuhan 430072, Peoples R China.

研究方向：Chemistry

ISSN：0306-0012