关键词: 锂离子电池, 正极材料, 技术进展

Abstract: The technology development in the main cathode materials of lithium ion battery at home and abroad of the past 30 years and the author′s research results of Mn-based cathode materials were discussed respectively.Advantages and disadvantages of the main cathode materials and opinions of the development trend in the cathode materials of lithium ion battery were summarized.It was believed that Li（Mn，Co，Ni）O₂ is going to replace LiCoO₂ and LiMn₂-xAxO₄ or Li（Mn，Co，Ni）O₂  or the mixture of both will be widely used in the power lithium ion battery.In the coming 5~10 a，the layered structure material might be the potent competitor in the next lithium ion battery，which is the chemical formula of Li₂MnO₃-Li（Mn，Co，Ni）O₂  and has a higher capacity.

Key words: lithium ion battery, cathode materials, technology development