ChemInform Abstract: An Aluminum/Chlorine Rechargeable Cell Employing a Room Temperature Molten Salt Electrolyte.

Abstract

016ChemInform Abstract A 1.5:1 AlCl3: 1,2-dimethyl-3-propylimidazolium chloride electrolyte is used for the new secondary cell with an Al negative electrode and a graphite positive electrode, which serves as a reversible chlorine intercalation electrode, thus eliminating the need of a separation membrane between anolyte and catholyte compartments. The cell possesses an average discharge voltage of 1.7 V for currents of 1-10 mA/g graphite and over 150 cycles at 100% depth-of-discharge of the positive electrode are obtained. However, the storage capacity of graphite for chlorine is too low to achieve satisfactory energy densities.