CeCl3 concentration effects on cyclic voltammogram overlap in LiCl-KCl eutectic molten salt

In the present study, cyclic voltammetry was performed to investigate CeCl3 in a LiCl-KCl eutectic molten salt at various concentrations. The results indicate that the overlap degree of cyclic voltammograms at different cycles deteriorates with the increasing CeCl3 concentration in the molten salt. This phenomenon was attributed to higher concentrations of CeCl3, which led to a non-uniform film on the electrode surface. This was evidenced by material characterization of the working electrode after cyclic voltammetry (CV) testing and the simulated cyclic voltammograms of a reversible electrochemical reaction. This study will provide new insights that enhance our understanding of the electrochemistry of the CeCl3-LiCl-KCl system and offer valuable reference for other soluble-insoluble electrochemical systems.