Electrochemical performance of high-capacity nanostructured Li[Li _0.2Mn_0.54Ni_0.13Co_0.13]O ₂cathode material for lithium ion battery by hydrothermal method

High-capacity Li[Li_0.2Mn_0.54Ni_0.13 Co _0.13]O₂has been successfully synthesized as a cathode material for Liion battery by hydrothermal method. The prepared materials are characterized by XRD, SEM, TEM, EDS, XPS and electrochemical measurements. The XRD result shows that Li[Li_0.2Mn_0.54Ni _0.13Co_0.13]O₂material formed a pure phase. SEM and TEM images present a uniformly distributed nanosize of 20-200 nm. The results of CV, charge-discharge tests indicate that this material possesses high discharge capacity and quite good cycling stability. It delivers 251.9 mAhg^-1 and 107.5 mAhg^-1 for the first cycle and remains 139.4mAhg^-1 and 82.7mAhg^-1 after 500 cycles, respectively, corresponding to 1 C and 10C.