Electrochemical Behavior of Fe/FeX₂ Electrodes in AlX₃-MX [X = Cl, Br; M = Li, Na, K] Molten Salts

抄録

The electrochemical behavior of Fe electrode has been studied in NaCl- or NaBr-saturated AlX₃-MX [X = Cl, Br; M = Li, Na, K] melts at a temperature of 185°C. The passivation of Fe electrode was suggested from cyclic voltammetry and chronopotentiometry. The performance of the Fe/FeX₂ positive electrode in AlCl₃-AlBr₃-KCl-NaCl-LiCl-NaBr melt was investigated at 120-250°C using a rechargeable cell Al/electrolyte/FeX₂. The charge-discharge capacity of the Fe/FeX₂ electrode depended upon the temperature.