富锂锰基层状锂离子电池正极材料的研究现状  

Research status of lithium-rich Mn-based layered cathode materials for Li-ion batteries

作　　者：张嘉[1] 朱泽华[1] 王海峰 

机构地区：[1]西南石油大学材料科学与工程学院,四川成都610500 [2]中国石油工程设计有限责任公司北京分公司,北京100085

出　　处：《电源技术》2015年第6期1323-1326,共4页Chinese Journal of Power Sources

摘　　要：富锂层状正极材料(LLOs)x Li2Mn O3·(1-x)Li MO2(M=Mn,Ni,Co,Fe,Cr,etc)以其超高的充放电容量及较低的成本受到了越来越多的关注。然而,该类正极材料的微观结构和反应机理尚不清楚。与此同时,也存在着一些问题,例如较低的首次库仑效率、较差的倍率性能以及工作电压衰减问题,这些都需要通过研究去克服。着眼于富锂层状正极材料研究现状,讨论了其微观结构、反应机理及电化学性能。Lithium-rich layered oxide materials（LLOs）x Li2Mn O3·（1-x）Li MO2（M=Mn,Ni,Co,Fe,Cr,etc） have been paid much attention because of their super high charge/discharge capacity and low cost. However, the micro-structure and reaction mechanism of these materials are still ambiguous. Meanwhile, there are numerous challenges, such as low initial Coulombic efficiency, poor rate capability and voltage degradation during cycling; all of above issues need to be solved. Based on the research status of lithium-rich Mn-based layered cathode material, micro-structure, reaction mechanism and electrochemical performance were discussed.

关 键 词：锂离子电池 富锂层状锰基正极材料 微观结构 反应机理 

分 类 号：TM912.9[电气工程—电力电子与电力传动]