Cyclic Voltammetry on CeCl3 in LiCl-KCl Eutectic Using W and Bi Coated Electrode

Abstract

This paper presents experimental results of cyclic voltammetry on CeCl₃ in LiCl-KCl using tungsten electrode and Bi coated electrode respectively at 703K. Using tungsten electrode at low concentration of CeCl₃, the redox reaction has been shown to be reversible. Diffusion coefficient and apparent standard potential of Ce(III) in LiCl-KCl were 0.42×10^-5 (cm²/s) and -3.153 (V vs. Cl₂/Cl⁻) under 50mV/s. In order to obtain Bi coated electrode, cyclic voltammetry was carried out on eutectic salt including BiCl₃. The redox reaction of Ce on Bi coated electrode has been shown to be reversible and apparent standard potential on Bi coated electrode moved 782mV compared with tungsten cathode.