Li / Li1 + x V 3 O 8 Batteries: V . Comparison with Other Secondary Cells and Influence of Micro‐ and Macro‐Structural Alterations on the Cathode Performance
Cells have been compared with analogous cells based on , , and cathodes. The results have demonstrated that this bronze can be ranked among the most promising cathode materials for high rate rechargeable Li cells. This has encouraged attempts aimed at improving the electrochemical performance of the bronze through substitution of V with such transition metals as Cr and Mo, and substitution of Li with Na. None of these substituted materials performed better than the parent compound. On the other hand, controlled intercalation within the layers resulted in an increased interlayer distance and in higher capacities. A remarkable improvement in cell performance at high rate (10 mA/cm2) was obtained with a new technique of cathode preparation.