The electrochemical behavior of LaCl3 dissolved in molten LiCl-KCl eutectic was studied at 693 to 823K by using Mo as the cathode and high-density graphite as the anode. Cyclic voltammetry, chronopotentiometry and square-wave voltammetry were used to determine major kinetic parameters. Sand’s equation was used to determine the diffusion coefficient of La(III) ions at four different temperatures. The diffusion coefficients (table 101) obeyed the Arrhenius law, according to which the activation energy for the diffusion of La(III) ions was 33.5kJ/mol.

Electrochemical Behavior of LaCl3 and Morphology of La Deposit on Molybdenum Substrate in Molten LiCl-KCl Eutectic Salt. H.Tang, B.Pesic: Electrochimica Acta, 2014, 119, 120-30

Table 101

Diffusivity of Br in NaCl Crystals