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Li-rich layered cathode material was modified by manganese oxide coating via a simple deposition and heat-treatment process. The HRTEM images and the XPS analysis demonstrated that the surface of was covered by continuous manganese oxide layer, with about thickness. The electrochemical performance is improved greatly, especially the rate capability. The composite coated with manganese oxide showed high reversible capacity of after at , compared with of the pristine. It is believed that surface modification of with manganese oxide coating exhibits a convenient approach for a large-scale production.

Li-rich layered cathode material Li[Li0.2Ni0.2Mn0.6]O2was modified by manganese oxide coating via a simple deposition and heat-treatment process. The HRTEM images and the XPS analysis demonstrated that the surface of Li[Li0.2Ni0.2Mn0.6]O2was covered by continuous manganese oxide layer, with about 10nmthickness. The electrochemical performance is improved greatly, especially the rate capability. The composite coated with 4wt%manganese oxide showed high reversible capacity of 210mAhg−1after 50cyclesat 2C(400mAg−1), compared with 77mAhg−1of the pristine. It is believed that surface modification of Li[Li0.2Ni0.2Mn0.6]O2with manganese oxide coating exhibits a convenient approach for a large-scale production.