Lithium rechargeable battery with LiCoO2 as its cathode material is important power source for military equipment. This article introduces the production situation of the battery, lists raw materials and procedures for LiCoO2 synthesis in high temperature and compares with the electrochemical property of batteries obtained from several companies. By summing up the recent development in LiCoO2,it is clear that studying the effect of materials and its mixing, reaction temperature, heat treatment and cooling r...