Cation disordered rock salt phase Li sub(2)CoTiO sub(4) as a potential cathode material for Li-ion batteries

Li sub(2)CoTiO sub(4) as a new titanate cathode material for Li-ion batteries was successfully synthesized by a sol-gel process. It had a cation disordered rock salt structure and showed an excellent cycle stability at room temperature. After coating with carbon, the Li sub(2)CoTiO sub(4) possessed a high discharge capacity of 144.3 mAh g super(-1). The poor conductivity and lithium ion diffusion coefficient of pure Li sub(2)CoTiO sub(4) are the main reasons for the limited electrochemical performance of the lithium batteries. The irreversible capacity loss during the first cycle was assigned to the irreversibility of the structural changes.