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Electrochemical properties of gadolinium on liquid gallium electrode in licl-kcl eutectic

Journal of Rare Earths 2018年第6期36卷 656-661页

作者： Bo Li Kui Liu Jingwen Pang Liyong Yuan Yalan Liu Mingzhang Lin School of Nuclear Science and Technology University of Science and Technology of ChinaHefei230026China Laboratory of Nuclear Energy Chemistry Institute of High Energy PhysicsChinese Academy of SciencesBeijing100049China

This work presents the electrochemical properties of gadolinium(Gd), a significant rare earth element in spent nuclear fuel(SNF), in the licl-kcl eutectic. To explore thermodynamic properties of Gd at the liquid gallium(Ga) electrode, experiments were performed both on the inert tungsten(W) and liquid gallium(Ga) electrode at different temperatures in a range from 723 to 823 K, which show that the Gd metal can be oxidized to Gd(Ⅲ) by exchanging of 3 electrons. Electrochemical techniques including cyclic voltammetry(CV), open circuit potential(OCP), potentiostatic electrolysis and galvanostatic electrolysis were utilized to detect the electrochemical behavior and evaluate standard apparent potential of the Gd(Ⅲ)/Gd couple,and E(Gd(Ⅲ)/Gd)*=-3.456 + 6.2×10-4T(±0.046)( vs Cl2/Cl-) is *** addition, electromotive force(EMF) and coulometric titration were employed to calculate the activity and activity coefficient of Gd in metal Ga. After calculation, the activity is 1.791×10-15at 723 K and function of activity coefficient and temperature is lgγ = 3.485-10927/T(±0.0875).

关键词： licl-kcl eutectic Electrochemical properties Gadolinium Liquid Ga Rare earths

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Preparation of Mg-Yb alloy film by electrolysis in the molten licl-kcl-YbCl_3 system at low temperature

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Journal of Rare Earths 2010年第1期28卷 128-133页

作者：陈野叶克张密林 Key Laboratory of Superlight Materials & Surface Technology Ministry of EducationCollege of Materials Science and Chemical EngineeringHarbin Engineering University

The electrochemical behavior of Yb3+ and electrodeposition of Mg-Yb alloy film at solid magnesium cathode in the molten licl-kcl-YbCl3(2 wt.%) system at 773 K was *** electrochemical techniques,such as cyclic voltammetry,chronopotentiometry and chronoamperometry were used in order to explore the deposition mechanism of *** reduction process of Yb3+ is stepwise reactions which are single-electron and double-electron reversible charge transfer *** speed control step was a diffu...

关键词： licl-kcl eutectic molten salt Mg-Yb alloy films electrolysis low temperature rare earths

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