Electrochemical behavior of cerium ion in molten LiCl-KCl
来源期刊：Journal of Rare Earths2013年第4期
论文作者：王长水 刘刈 何虎 高繁星 刘利生 常尚文 郭建华 常利 欧阳应根
文章页码：405 - 409
摘 要：The electrode process of cerium（Ⅲ） on the Mo electrode in eutectic LiCl-KCl melt was investigated by electrochemical transient techniques in the temperature range of 673-783 K,respectively.These results unanimously indicated that the reduction process of cerium（Ⅲ） to cerium metal was a single step exchanging three electrons which was controlled by diffusion of cerium（Ⅲ）.Diffusion coefficients（D Ce（Ⅲ）） in eutectic LiCl-KCl melt were determined by cyclic voltammetry,chronopotentiometry and square wave voltammetry.An empirical diffusion coefficient function depending on temperature was proposed:lnD Ce（Ⅲ） =-2.129-5704/T.The formal potentials（Eθ’ Ce（Ⅲ）/Ce（0） versus Ag/AgCl reference electrode） at different temperatures were obtained from chronopotentiometry,which were-2.10 V（673 K） and-2.07 V（733 K）,respectively.
王长水，刘刈，何虎，高繁星，刘利生，常尚文，郭建华，常利，欧阳应根
Department of Radiochemistry,China Institute of Atomic Energy
摘 要：The electrode process of cerium（Ⅲ） on the Mo electrode in eutectic LiCl-KCl melt was investigated by electrochemical transient techniques in the temperature range of 673-783 K,respectively.These results unanimously indicated that the reduction process of cerium（Ⅲ） to cerium metal was a single step exchanging three electrons which was controlled by diffusion of cerium（Ⅲ）.Diffusion coefficients（D Ce（Ⅲ）） in eutectic LiCl-KCl melt were determined by cyclic voltammetry,chronopotentiometry and square wave voltammetry.An empirical diffusion coefficient function depending on temperature was proposed:lnD Ce（Ⅲ） =-2.129-5704/T.The formal potentials（Eθ’ Ce（Ⅲ）/Ce（0） versus Ag/AgCl reference electrode） at different temperatures were obtained from chronopotentiometry,which were-2.10 V（673 K） and-2.07 V（733 K）,respectively.
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