Rechargeable Battery Including a Li 1+x Mn204 Cathode and a Carbon Anode

摘要

A lithium metal free non-aqueous secondary battery including a carbon anode and a lithium manganese oxide cathode is described. In operation, lithium from the lithium manganese oxide positive electrode intercalates with the carbon negative electrode and in this manner lithium ions are rocked back and forth during charge-discharge cycling. Lithium manganese oxide of the formula Li2Mn2O4 may also be used as the cathode and this material may be prepared by a novel technique which involves reacting LiMn2O4 with lithium iodide at low temperatures (150 DEG C.), or alternatively by refluxing LiMn2O4 in an acetonitrile solution of lithium iodide.