摘要
随着电动汽车、智能电网以及大规模储能领域的快速发展,对作为储能设备的锂离子电池的各项性能指标,如能量密度和功率密度等,提出了更加苛刻的要求。因此,开发稳定性好、比容量高的新型正极材料是进一步提高锂离子电池能量密度的关键。富锂三元正极材料xLi_2MnO_3·(1-x)Li Mn_(1/3)Ni_(1/3)Co_(1/3)O_2(0.1≤x≤0.5)具有工作电压高、比容量高、环境友好等优点,引起了广大科研工作者的高度关注和广泛研究。本文就此类新型富锂三元正极材料的研究进展进行了总结,对该类材料的晶体结构特征以及首次充放电机理、电化学性能的改善等进行了评述,并对其未来的发展方向进行了展望。
With the rapid development of electric vehicles,smart grid and large-scale energy storage areas,the higher requirements for energy and power density of the lithium ion battery have been put forward. Therefore,developing a new type of cathode material which has good stability and high specific capacity is the key to further improve the energy density for lithium ion battery. Among different kinds of cathode materials,lithium rich ternary cathode material x Li2 Mn O3·（1-x） Li Mn1/3Ni1/3Co1/3O2（0. 1≤x≤0. 5） is considered to be the most promising one due to its high specific capacity,high voltage and friendly to environment. In this paper,the research progress in lithium rich ternary cathode material and its crystal structure and electrochemical characteristics as well as the existing problems were introduced. The future development trends of x Li2 Mn O3·（1-x） Li Mn1/3Ni1/3Co1/3O2（0. 1≤x≤0. 5）was also expected.
出处
《化学通报》
CAS
CSCD
北大核心
2017年第1期34-40,共7页
Chemistry
关键词
锂离子电池
正极材料
富锂三元正极材料
电化学特性
掺杂及包覆改性
Lithium ion battery
Cathode materials
Lithium-rich ternary cathode materials
Electrochemical characteristics
Doping and coating modification
