Lithium Intercalation Cells Without Metallic Lithium: and

The authors studied the possibility of using a reducing intercalation compound such as MoO/sub 2/ or WO/sub 2/ as a replacement for metallic lithium in secondary electrochemical cells. In order to be of practical importance, a cell of this type requires good reversibility at both electrodes and a substantial potential difference between the two electrodes. Coupled with a highly oxidizing positive electrode such as LiCoO/sub 2/, they find that both WO/sub 2/ and MoO/sub 2/ are feasible substitutes for lithium negative electrodes. With improvements in cycling efficiency, materials such as these could improve the overall performance of secondary lithium intercalation cells.