Novel LiNi[sub 1−x]Ti[sub x/2]Mg[sub x/2]O[sub 2] Compounds as Cathode Materials for Safer Lithium-Ion Batteries

A new class of materials has been synthesized. The compound showed a reversible capacity of and stable cycling was demonstrated. Differential scanning calorimetry studies showed much improved thermal stability of these materials in their totally charged states in contact with electrolyte. The exothermic peak at in a charged electrode containing was drastically reduced asx increases in . No exotherm was observed below for in its totally charged state. We believe that the use of these materials will improve the overall safety of batteries. ©1998 The Electrochemical Society