Electrode kinetics in molten lithium chloride-potassium chloride eutectic at 450°C Part I. Faradaic impedance at platinum and silver electrodes

Abstract

The results of an extensive experimental study of the faradaic impedance at platinum and silver microelectrodes at their equilibrium potentials in molten LiCl-KCl eutectic at 450°C are presented. Values of rate constants and transfer coefficients obtained by straightforward application of classical and complex plane methods of analysis are found to be reasonably consistent and in fairly close agreement with previous work of similar scope. Nevertheless, due to evidence of adsorption of electroactive species, and the limitations of the simple analyses applied, it is desirable to seek confirmation of these values of the kinetic parameters by other methods which avoid the difficulties inherent in the simple application of the impedance techniques.