Abstract
This work focused on the electrochemical behavior of Nd(III) and the formation of Zn-Nd alloys on Mo electrodes in LiCl-KCl-ZnCl2 molten salt system at 773 K. Cyclic voltammetry, open-circuit chronopotentiometry, and square-wave voltammetry were used. The results showed that the underpotential deposition of Nd on a predeposited Zn cathode gave three types of Zn-Nd intermetallic compounds in LiCl-KCl-ZnCl2 solutions. Based on the electrochemical results, square-wave voltammetry was used to determine the concentration changes of Nd during potentiostatic electrolysis. The extraction efficiency of Nd was evaluated based on the concentration changes after electrolysis. The results indicated that the concentration of Nd(III) was close to zero, and the extraction efficiency was 99.67% after potentiostatic electrolysis at-1.84 V for 50 h. The extraction of Nd and preparation of Zn-Nd alloys were performed by galvanostatic electrolysis at 973 K. The phase compositions and 1674
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