Electrochemical behaviour of magnesium(II) on Ni electrode in LiCl-KCl eutectic

Shanshan Wang; Wei Han; Milin Zhang; Mei Li; Xiaoguang Yang; Yang Sun

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 in LiCl-KCl eutectic

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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 charac-terized 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.

Keywords

Electrochemical behaviour / Mg-Ni alloy / Electrochemical formation / Ni electrode / Molten chloride

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Shanshan Wang, Wei Han, Milin Zhang, Mei Li, Xiaoguang Yang, Yang Sun. Electrochemical behaviour of magnesium(II) on Ni electrode in LiCl-KCl eutectic. Chemical Research in Chinese Universities, 2018, 34(1): 107-112 DOI:10.1007/s40242-018-7227-x

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