The electrochemical reduction of Zr4+ complex ions in NaCl-KCl-K2ZrF6 melts on Pt electrodes was investigated using cyclic voltammetry and square wave voltammetry at 1023K. Two cathodic reduction peaks, related to Zr4+/Zr2+ and Zr2+/Zr steps, were observed in the cyclic voltammograms. The diffusion coefficient of Zr4+ complex ions at 1023K in NaCl-KCl-K2ZrF6 melt, measured using cyclic voltammetry, was about 4.22 x 10-6cm2/s.

Electrochemical Behavior of Zirconium in Molten NaCl-KCl-K2ZrF6 System. Y.Wu, Z.Xu, S.Chen, L.Wang, G.Li: Rare Metals, 2011, 30[1], 8-13