Electrochemical properties of a lithium-potassium chloride molten eutectic mixture held in contact with neodymium and dysprosium

Kovalevskii, A. V.; Kondrat'ev, D. A.

doi:10.3103/s1067821214020096

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“…As an important heavy rare earth metal, dysprosium and Dy alloys have attracted much attention for potential use as various high-tech functional materials since it has great magnetic, optical, electrical, and physical properties [15][16][17][18][19][20]. Li Mei et al [21] achieved the Dy-Ni intermetallic compounds and the electrochemical behavior of Dy(III)in LiCl-KCl molten salt; Liu Yuan et al [22] researched the electrochemical behavior of Dy(III) in NaF-CaF 2 -DyF 3 melts on iron electrode; Pyonghun Kim et al [23] studied the direct electrochemical reduction of Dy 2 O 3 in CaCl 2 melt.…”

Section: Introductionmentioning

confidence: 99%

The electrochemical behavior of Dy(III) in eutectic LiF-DyF3 at W electrode

Yang

Wang

et al. 2016

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The electrochemical reduction process of Dy ion on tungsten electrode at 1103 K in Dy 2 O 3 -LiF-DyF 3 molten system was studied by cyclic voltammetry, chronoamperometry, and chronopotentiometry methods with a three-electrode system on the electrochemical workstation AUTOLAB. The results showed that Dy 3+ could be deposited at around −0.75 Von inert W electrode compared with platinum electrode. The reduction process of Dy ion on W electrode occurred in a single step with the exchange of three electrons because one reduction peak was observed, and the calculated transfer electron number was three. Chronoamperograms indicated that the nucleation process of dysprosium ions was instantaneous three-dimensional nucleation on a tungsten electrode. The cathode electrochemical process on the tungsten electrode was controlled by the diffusion of ions, and the diffusion coefficient was 1.159 × 10 −4 cm 2 /s, which was calculated from a chronopotentiogram.

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Section: Introductionmentioning

confidence: 99%