Solid State Electrochemistry of Intercalation Compound of LiAl1/2Ni1/2O2(R3m) for Lithium-Ion Batteries

One-to-one mixture of LiNiO2(R3m)andLiA102(R3m)n a soid matrix was prepared and examined in nonaqueous lithium cellsThe samplc was idcntified by XRD as a solid solutioll of LiNiO2andLiA102 ieLiAII2Ni1202(R3ma2838Ac14226Ainhexagonalsetting) Rhargeablecapacitywas about00mAhgbased on sample wcight out of164mAhg L of theoretical capacityCapacity rctention of the cell was good when it operated in voltages between25and45VXRD examinations indicated that the reaction preeded in a single phase ovcr the entire mnge in Li1xAl12Ni202(10x12)The solidstate redox reaction was also examincd using the concept of electrhemical density of stesand the efft of aluminum on the solid-state rcdox levcls primarily dcrived from redox spies based on nickel was dcscribed