LITHIUM-CYCLING EFFICIENCY IN INORGANIC ELECTROLYTE SOLUTION

Lithium-cycling efficiencies and corrosion rates were measured in half cells. The elaborated inorganic electrolyte solution, consisting main ly of LiAlCl4 and SO2, has a conductivity of 2.2 mS/cm at -25-degrees- C and 98 mS/cm at 60-degrees-C. Lithium-cycling efficiencies of about 98% at 40 mA/cm2 for at least 50 cycles were achieved. Depending on im proved electrolyte preparation, the current density for the lithium co rrosion could be reduced from 12.1 to 6.5 muA/cm2. The results indicat e stability, compatibility and high rate capability of the system lith ium/inorganic electrolyte solution.