DISULFIDE-POLYANILINE COMPOSITE CATHODES FOR RECHARGEABLE BATTERIES WITH HIGH-ENERGY DENSITY

A composite cathode was prepared from a solution containing 2,5-dimerc apto- 1,3,4-thiadiazole (DMcT) and polyaniline (PAn). The resulting ca thode exhibits 80% of the theoretical capacity. Furthermore, an energy density of over 600 Wh/kg-cathode and a discharge voltage of 3.4 V an obtained, when it is coupled with a lithium anode. Additional advanta ges of the present cathode material over the conventional metal oxides are the ease in disposal by incineration, the low pollution and the l ow cost. Current capability of 137 A/kg-cathode is achieved by adding a polypyrrole derivative to the DMcT-PAn composite and coupling it wit h a copper current collector.