Layered LixMn1-yNiyO2 intercalation electrodes

Synthesis of the layered lithium intercalation compound LixMn1 - yNiyO2, wi th the O3 (alpha -NaFeO2) structure is reported and it is shown to exhibit amongst the highest capacity to cycle lithium (charge) on intercalation/dei ntercalation (220 mA h g(-1) between potential limits of 2.4 to 4.8 V) of a ny such material and at a relatively high charge/discharge rate; the ion ex change conditions used in the synthesis have an important influence on the defect chemistry of the host structure and this in turn influences the perf ormance of the compound as an electrode in rechargeable lithium batteries.