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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.
Auborn et al. (Sun,) studied this question.