REVERSIBLE LITHIUM-GRAPHITE ANODES IN ROOM-TEMPERATURE CHLOROALUMINATE MELTS

Reduction of a graphite rod electrode in an AlCl3:EMIC:LiCl room-tempe rature molten salts leads to reversible lithium intercalation into the reduced graphite lattice. The cycling efficiency of the Li-graphite e lectrode ranges from 80 to 90% for current densities of 0.2 to 1 mA cm -2. In the staircase cyclic voltammogram the oxidation process occurs at a potential approximately 1 V positive of the reduction process.