基于Li_2MnO_3的富锂类高比容量锂离子电池正极材料的研究进展

The Review of Lithium Rich Cathode Materials Based on Li_2MnO_3

综述了近几年来基于Li2MnO3的高比容量二元和三元富锂类锂离子电池正极材料的研究进展.重点讨论了富锂材料zLi2MnO3.(1-z)LiMO2(0<z<1,M=Mn0.5Ni0.5,MnxNiyCo(1-x-y),0<x,y<0.5)的结构特点和富锂材料的嵌脱锂机理;总结了二元和三元富锂材料的制备、电化学性能和材料的改性以及材料现阶段存在的问题,探讨了这类富锂材料今后的研究热点和方向.

A progress of lithium-rich cathode materials based on Li2MnO3 with a high specific capacity is reviewed. The discussion of characters of structure and lithium-ion intercalation- deintercalation mechanisms of lithium-rich cathode materials zLi2 MnO3.（1- z）LiMO2 （0〈z〈 1, M = Mn0. 5 Ni0.5, MnxNiyCo（1-x-y） , 0 % x, y % 0.5） is mainly focused on. The synthesis, electrochemical performances, modifications and current problems of the binary and ternary lithium-rich materials are summarized, and further research hot points and orientation of these kinds of materials as cathode materials for lithium ion batteries are pointed out.