Rechargeable LiCoO2 in inorganic electrolyte solution

Abstract The charge/discharge reaction of LiCoO 2 electrode in an inorganic electrolyte solution consisting mainly of LiAlCl 4 and SO 2 has been studied. Three different phases of lithium intercalation/deintercalation were found in voltammograms. Cycling behaviour of LiCoO 2 electrode shows an increasing electronic resistance in the LiCoO 2 bulk. The studied electrode/electrolyte combination is capable to withstand overcharging up to 5 V versus Li/Li + without any capacity decrease.