Li-rich transition metal oxide xLi₂MnO₃ · (1-x)LiMO₂ (M=Ni, Co or Mn) for lithium ion batteries

As a promising candidate of the cathode materials for the next generation of high energy density lithium-ion batteries, the Li-rich transition metal oxide xLi₂MnO₃ · (1-x)LiMO₂ (M=Ni, Co or Mn) is superior to the traditional cathode materials for its potential of achieving very high capacity of over 300mAh/g. Therefore, this type of materials is caught more and more attention in recent years. Here we give an overview of recent progress ofxLi₂MnO₃ · (1-x)LiMO₂ in recent years. The research hotspots, the crystal structure characteristics and the mechanism of initial charge and discharge, the development of various synthesis methods, as well as the improvement of the electrochemical performances for xLi₂MnO₃ · (1-x)LiMO₂(M=Ni, Co or Mn) are commented. The future development trends of the xLi₂MnO₃ · (1-x)LiMO₂ (M=Ni, Co or Mn) is put forward.