a b s t r a c tLi 2 TiO 3 -coated Li-rich layered Li 1.13 Ni 0.30 Mn 0.57 O 2 (0.3Li 2 MnO 3 $0.7LiNi 0.5 Mn 0.5 O 2 ) compound has been successfully synthesized for the first time through a syn-lithiation strategy. In this approach, Ni 0.35 Mn 0.65 C 2 O 4 $xH 2 O precursor is first prepared by a co-precipitation method, then it is coated with TiO 2 through a reaction between Ni 0.35 Mn 0.65 C 2 O 4 $xH 2 O and Ti(OC 4 H 9 ) 4 , and finally Ni 0.35 Mn 0.65 C 2 O 4-yH 2 O@TiO 2 is simultaneously lithiated to form Li 2 TiO 3 -coated Li-rich layered oxide. Both the cyclability and high-rate capability of Li-rich layered cathode materials have been greatly improved by Li 2 TiO 3 coating. Meanwhile, the Li 2 TiO 3 coating layer also reduces the polarization of the electrode and retards voltage drop during cycling. The reversible capacity of the 3 mol% Li 2 TiO 3 -coated Li-rich layered cathode material at the 100 th cycle at a large current density of 100 mA/g is significantly enhanced to105 mAh/g from 78 mAh/g of the un-coated sample. The enhancements of the electrochemical performance can be largely attributed to the stabilization of the interface between the cathode and electrolyte, the threedimensional path for Li þ -ion and better conductivity after Li 2 TiO 3 coating. It is also disclosed that the amount of Li 2 TiO 3 coating also has a large influence on the electrochemical performances and it is necessary to optimize the specific capacity, cycling stability and rate capability through tuning the content of Li 2 TiO 3 coating.