钴酸锂作为锂离子正极材料研究进展

Research progress of lithium cobalt oxide as cathode material of Li-ion batteries

在锂离子电池电极材料研究中,比容量高、循环性能好的电极材料一直是研究的热点。对于钴酸锂正极材料来说,其实际电化学性能如比容量、容量保持率、倍率性能等都与材料的掺杂、包覆密切相关。综合国内外取得的一些研究进展,总结和提炼了获得高性能钴酸锂的几个关键要素,其中包括:晶体结构、结构转变、合成及改性方法等。

A cathode material with high specific capacity and good cycling performance has always been the focus of recent research for Li-ion batteries.For lithium cobalt oxide,the electrochemical performances,such as the specific capacity,the capacity retention and the rate capability etc.,are closely related to the doping and coating of this material.Several key factors of lithium cobalt oxide used were summarized and refined,as well as the crystal structure,structural transformation,and the synthesis and modification methods of lithium cobalt oxide.