Electrochemical behavior of Ba2+ at liquid metal cathodes in molten chlorides

The electrochemcal behavior of Ba2+ on several liquid metal electrodes (AI, Bi, Cd, Pb, Sn and Zn) in a NaCl-KCl equimolar solvent at 1000 K has been investigated by means of cyclic voltammetry and chronopotentiometry. The ki netic parameters and the diffusion coefficient for Ba2+ were determined by cyclic voltammetry with conventional, semi-integral, semi-differential meth ods and chronopotentiometry. It was revealed that on a liquid Pb electrode in the NaCl-KCl system at 1000 K the quasi-reversible cathodic reaction Ba2 + + 2e(-) + Pb --> BaPb takes place. In addition, the kinetic parameters an d the diffusion coefficient agree well with the values determined by variou s electroanalyses. The possibility of ahoy formation between Ba and Sn was also demonstrated in this paper.