Electrochemical Behavior of Dissolved Fe2O3 in Molten CaCl2-KF

The electrochemical behavior of dissolved Fe2O3 in 82. 5CaCl2-17. 5KF (mole percent, %) was studied using cyclic voltammetry, chronoamperometry, and galvanostatic electrolysis at 827 °C, and the deposits were characterized by XRD and SEM. Pure iron was deposited on a rotating cylinder (210 r/min) with a cell voltage less than −1. 0 V. Deposition rate was controlled by diffusion on a molybdenum electrode. The diffusion coefficient of iron species Fe(III) in the melt at 827 °C was found to be 9.7×10−5 cm2/s.