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首页> 外文期刊>International Journal of Electrochemical Science >Electrochemical Behaviour of Tin in a LiCl-KCl Eutectic Melt
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Electrochemical Behaviour of Tin in a LiCl-KCl Eutectic Melt

机译：LiCl-KCl共晶熔体中锡的电化学行为

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摘要

The electrochemical behaviour and thermodynamic properties of SnCl2 in a LiCl-KCl eutectic meltwas investigated on graphite and Mo electrodes at 500℃ by cyclic voltammetry, chronopotentiometry,square wave voltammetry, and open circuit chronopotentiometry. Two redox couples of tin ions due toSn(IV)/Sn(II) and Sn(II)/Sn were obtained, and the cathodic peak potentials were found to be 0.50 Vand -0.50 V, respectively. The reduction reactions of Sn(IV)/Sn(II) and Sn(II)/Sn are quasi-reversibleprocesses and occur with two exchanged electrons, respectively. The diffusion coefficients of theSn(IV) and Sn(II) ions were also determined on graphite electrode by the Berzins-Delahay equation,which were 2.68×10-5 cm2/s and 5.19×10-5 cm2/s, respectively. In addition, square wave voltammetryand open circuit chronopotentiometry experiments performed on a Mo electrode further indicated thatthe reduction of Sn(II) into Sn metal occurred in a single step and two electrons were exchanged. Theresearch lays a foundation for electrolytic refining and electrodeposition of Zr?Sn alloy.
机译：通过循环伏安法，计时电位法，方波伏安法和开路计时电位法研究了LiCl-KCl共熔熔体中SnCl2在500℃的石墨和钼电极上的电化学行为和热力学性质。由于Sn（IV）/ Sn（II）和Sn（II）/ Sn，获得了两对锡离子的氧化还原对，阴极峰电位分别为0.50 V和-0.50V。 Sn（IV）/ Sn（II）和Sn（II）/ Sn的还原反应是准可逆过程，分别与两个交换电子发生。还通过Berzins-Delahay方程确定了Sn（IV）和Sn（II）离子在石墨电极上的扩散系数，分别为2.68×10-5 cm2 / s和5.19×10-5 cm2 / s。此外，在Mo电极上进行方波伏安法和开路计时电位法实验进一步表明，将Sn（II）还原为Sn金属是一步完成的，并且交换了两个电子。研究为Zr？Sn合金的电解精炼和电沉积奠定了基础。

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