| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1258753 | Journal of Rare Earths | 2013 | 5 Pages |
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 (DCe(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: lnDCe(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.
Graphical AbstractCyclic voltammogram of LiCl-KCl-CeCl3AMo=0.18 cm2, 673 K, v: 100 mV/s, CCe(III): 2.0×10−4 mol/cm3, RE: Ag/AgClFigure optionsDownload full-size imageDownload as PowerPoint slide
