The electrochemical behavior of Pr(III) in eutectic LiCl-KCl molten salt at 873 K at different electrodes

摘要

The electrochemical behavior of Pr(III) ion was investigated in eutectic LiCl-KCl molten salt at 873 K. The reaction mechanism and transport parameters of electroactive species were determined by electrochemical techniques(such as cyclic voltammetry, open-circuit potentiometry) at a molybdenum electrode and a nickel electrode. The underpotential value of the Pr(III)/Pr(0) has been determined, giving values 0.89V versus Ag/AgCl in the eutectic LiCl-KCl at 873 K. Ni-Pr alloys with different phases were obtained by potentiostatic electrolysis at a nickel electrode. XRD was employed to characterize the alloys.