Electrochemical Behaviour of Magnesium（Ⅱ） on Ni Electrode in LiCl-KCl Eutectic  

作　　者：WANG Shanshan HAN Wei ZHANG Milin LI Mei YANG Xiaoguang SUN Yang 

机构地区：[1]Key Laboratory of Superlight Materials and Surface Technology, Ministry of Education, College of Material Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, P. R. China

出　　处：《Chemical Research in Chinese Universities》2018年第1期107-112,共6页高等学校化学研究（英文版）

基　　金：Supported by the National Natural Science Foundation of China（Nos.11675044, 11575047, 21790373 and 21271054）, the Major Research Plan of the National Natural Science Foundation of China（Nos. 91326113, 91226201） and the Fundnmental Research Funds for the Central Universities, China（No.HEUCFP201790）.

摘　　要：The electrochemical behaviour of magnesium（Ⅱ） and the formation mechanism of Mg-Ni alloys on Ni electrode were studied in LiCl-KCl eutectic using various electrochemical techniques. Cyclic voltammogram and square-wave voltammogram revealed that under-potential deposition of magnesium occurred on Ni electrode because Mg-Ni alloy compounds were formed. The thermodynamic properties of the Mg-Ni intermetaUics, Mg2Ni and MgNi2, were determined using open circuit chronopotentiometry in the temperature range of 8186893 K. Moreover, the Mg-Ni alloys were produced by potentiostatic and galvanostatic electrolysis under different conditions and characterized by means of scanning electron microscopy（SEM） equipped with energy dispersive spectrometry（EDS） and X-ray diffraction（XRD）. The experimental results indicate that Mg-Ni intermetaUic compounds can be selectively produced by potentiostatic electrolysis.The electrochemical behaviour of magnesium（Ⅱ） and the formation mechanism of Mg-Ni alloys on Ni electrode were studied in LiCl-KCl eutectic using various electrochemical techniques. Cyclic voltammogram and square-wave voltammogram revealed that under-potential deposition of magnesium occurred on Ni electrode because Mg-Ni alloy compounds were formed. The thermodynamic properties of the Mg-Ni intermetaUics, Mg2Ni and MgNi2, were determined using open circuit chronopotentiometry in the temperature range of 8186893 K. Moreover, the Mg-Ni alloys were produced by potentiostatic and galvanostatic electrolysis under different conditions and characterized by means of scanning electron microscopy（SEM） equipped with energy dispersive spectrometry（EDS） and X-ray diffraction（XRD）. The experimental results indicate that Mg-Ni intermetaUic compounds can be selectively produced by potentiostatic electrolysis.

关 键 词：Electrochemical behaviottr Mg-Ni alloy Electrochemical formation Ni electrode Molten chloride 

分 类 号：TG139.7[一般工业技术—材料科学与工程] O625.463[金属学及工艺—合金]