锂离子电池正极材料技术进展

摘要

概述了国内外近30 a有关锂离子电池正极材料的研究进展以及笔者在锰系正极材料方面的研究结果；比较了几种主要正极材料的性能优缺点;阐明了正极材料发展方向.近期镍钴锰酸锂三元材料将逐步取代钴酸锂,而改性锰酸锂和镍钴锰酸锂三元材料以及两者的混合体将在动力型锂离子电池中获得广泛使用.在未来5～10a,高容量的层状富锂高锰型正极材料或许会是下一代锂离子电池正极材料的有力竞争者.%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.