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Electrochemical co-reduction of Mg(II), Al(III) and Nd(III) in the LiCl-NaCl-MgCl2-AlF3 melts

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Abstract

To prepare Mg–Al-Nd alloys electrochemically, the electrochemical co-reduction mechanism of Mg(II), Al(III), and Nd(III) was probed in the LiCl-NaCl-MgCl2-AlF3 melts on a molybdenum electrode by means of various electrochemical measurement techniques, i.e., cyclic voltammetry, square wave voltammetry, chronopotentiometry, and open circuit chronopotentiometry. It was found that Nd could deposit on pre-deposited Al metal and form Nd-Al intermetallics in the LiCl-NaCl-NdCl3-MgCl2-AlF3 system, and the electrochemical signal related to the formation of ternary intermetallics was not detected. The co-reduction of Mg(II), Al(III), and Nd(III) was carried out on molybdenum electrode by galvanostatic electrolysis to prepare Mg–Al-Nd alloy, and samples were characterized by X-ray diffraction, scanning electron microscopy (SEM) with energy-dispersive spectrometry (EDS), and inductively coupled plasma-atomic emission spectrometry (ICP-AES). The results indicate that the alloy products were comprised of Al2Nd intermetallic, Mg and Al phases, and the Mg–Al compound was not observed in the alloys.

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Funding

The work was financially supported by the National Natural Science Foundation of China (U2167215, 22076035, 11875116, and 21876034) and the Fundamental Research Funds for the Central Universities (3072022JC1501).

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Authors and Affiliations

  1. Key Laboratory of Superlight Materials and Surface Technology, Ministry of Education, College of Material Science and Chemical Engineering, Harbin Engineering University, Harbin, 150001, China

    Mei Li, Xuan Guo, Yaochen Liu, Rugeng Liu, Meng Zhang, Yang Sun & Wei Han

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  1. Mei Li
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  2. Xuan Guo
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  3. Yaochen Liu
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  4. Rugeng Liu
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  5. Meng Zhang
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Correspondence to Yang Sun or Wei Han.

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Li, M., Guo, X., Liu, Y. et al. Electrochemical co-reduction of Mg(II), Al(III) and Nd(III) in the LiCl-NaCl-MgCl2-AlF3 melts. J Solid State Electrochem (2024). https://doi.org/10.1007/s10008-024-05868-9

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  • DOI: https://doi.org/10.1007/s10008-024-05868-9

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