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

doi:10.1007/s40242-018-7227-x

Chemical Research in Chinese Universities ›› 2018, Vol. 34 ›› Issue (1): 107-112.doi: 10.1007/s40242-018-7227-x

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

WANG Shanshan, HAN Wei, ZHANG Milin, LI Mei, YANG Xiaoguang, SUN Yang

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

Received:2017-06-29 Online:2018-02-01 Published:2018-01-20
Contact: HAN Wei,E-mail:weihan@hrbeu.edu.cn;LI Mei,E-mail:meili@hrbeu.edu.cn E-mail:weihan@hrbeu.edu.cn;meili@hrbeu.edu.cn
Supported by:
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 Fundamental Research Funds for the Central Universities, China(No.HEUCFP201790).

Abstract

Abstract: 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 intermetallics, Mg₂Ni and MgNi₂, were determined using open circuit chronopotentiometry in the temperature range of 818―893 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 intermetallic compounds can be selectively produced by potentiostatic electrolysis.

Key words: Electrochemical behaviour, Mg-Ni alloy, Electrochemical formation, Ni electrode, Molten chloride

WANG Shanshan, HAN Wei, ZHANG Milin, LI Mei, YANG Xiaoguang, SUN Yang. Electrochemical Behaviour of Magnesium(II) on Ni Electrode inLiCl-KCl Eutectic[J]. Chemical Research in Chinese Universities, 2018, 34(1): 107-112.

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

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