DEFGRAL defective graphene seeded rechargeable lithium-fluorosulfur battery.

All graphene batteries are way ahead TM based Li-ion chemistry by providing specific type of fluorinated few layer graphene FFLG as conversion/insertion cathode and sulfur as supporting cathode and sulfur radicals as mediator for reversible fluorination/defluorination (charge/discharge) of FFLG. Capacity in excess of 3500 Wh/kg at cathode level is possible due the dual interaction of Li+ (conversion reaction S,F) and Li2F+ (insertion into carbon host sites which was created by electrochemical defluorination) mediated by presence of sulfur radicals. Surprisingly FFLG is present in both cathode/anode so for the first time both electrodes share at least 40% materials.