| Abstract
| - Members of the (Li1.3-yCuy)V3O8 solid solution were synthesized for 0 < y< 1 by annealing, inevacuated sealed quartz ampules, stoichiometric mixtures of LiVO3, Cu2O, and V2O5, and theirelectrochemical performance in (Li1.3-yCuy)V3O8/Li cells was studied as a function of y. The rationalefor carrying out such a synthesis in a vacuum rather than in air, as commonly practiced, is given, and theorigin of the Cu solid solution limit is explained on the basis of structural considerations. With the exceptionof the rate capability, the electrochemical performances of the (Li1.3-yCuy)V3O8 samples both in terms ofcapacity and capacity retention decreased with increasing y. The decrease in reversibility of the Li insertion/deinsertion process with increasing y is shown, through in situ X-rays and HRTEM measurements, to benested in the partial reversibility of the Cu extrusion/re-injection process on cycling.
- (Li1.3-yCuy)V3O8 samples were synthesized for 0 < y< 1, and their electrochemical performance was studied. The rationale for synthesis is given and solid solution limit is explained. The decrease in reversibility of the Li insertion/deinsertion process with increasing y is shown, through in situ measurements, to be nested in the partial reversibility of the Cu extrusion/re-injection process on cycling.
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