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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.
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 Diffuse coefficients (D Ce (Ⅲ)) in eutectic LiCl-KCl melt were determined by cyclic voltammetry, chronopotentiometry and square wave voltammetry. An empirical formation of cerium metal was a single step exchanging three electrons which was controlled by diffusion of cerium (Ⅲ) 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.