High-capacity Li[Li0.2Mn0.54Ni0.13Co0.13]O-2 has been successfully synthesized as a cathode material for Li-ion battery by hydrothermal method. The prepared materials are characterized by XRD, SEM, TEM, EDS, XPS and electrochemical measurements. The XRD result shows that Li[Li0.2Mn0.54Ni0.13Co0.13]O-2 material 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 mAh g(-1) and 107.5 mAh g(-1) for the first cycle and remains 139.4 mAh g(-1) and 82.7 mAh g(-1) after 500 cycles, respectively, corresponding to 1 C and 10 C. (C) 2013 Elsevier Ltd. All rights reserved.