The structure and electrochemical performance of Li2MnO3-coated Li[Ni0.5Co0.2Mn0.3]O-2 cathode were investigated. The results demonstrated that the Li2MnO3-coated Li[Ni0.5Co0.2Mn0.3]O-2 sample exhibited an improved electrochemical performance at room and elevated temperatures, especially at a high cutoff voltage range. The capacity retention of the 1.0 mol% Li2MnO3-coated sample after 100 cycles was 78% at 3.0-43V, in comparison with that of 57% for the pristine one at room temperature. Interestingly, after 200 cycles, the 4.0 mol% Li2MnO3-coated cathode showed the best cycle stability with capacity retention as high as 37% when the cut-off voltage was increased to 4.8V, while it was only 2% for the pristine sample. The cyclability of Li[Ni0.5Co0.2Mn0.3]O-2 at high temperature was also slightly improved with Li2MnO3 coating. (C) 2015 Elsevier B.V. All rights reserved.