高电压LiNi0.5Mn1.5O4正极材料改性对动力学性能影响的研究进展

摘要

尖晶石型LiNi0.5Mn1.5O4正极材料以其高电压平台、高能量密度和功率密度和环境友好等优点,近年来成为很有前景的正极材料.简述了高电压正极材料LiNi0.5Mn1.5O4的结构、温度对结构的影响、结构判断和制备方法,详细综述了LiNi0.5Mn1.5O4正极材料的体相掺杂和表面包覆改性对其电荷转移电阻和扩散系数的影响及性能的影响,展望了尖晶石型LiNi0.5Mn1.5O4正极材料的发展趋势.%With its high voltage platform,high energy density and power density and environmental friendliness,spinel LiNi0.5Mn1.5O4 has been considered as very promising cathode materials in recent years.In this paper,the structure of high voltage LiNi0.5Mn1.5O4 cathode materials,the influence of the temperature on its structure,structural judgment and the preparation methods are briefly introduced.The influence of the bulk doping and surface-modification on the charge transfer resistance,diffusion coefficient and properties of LiNi0.5Mn1.5O4 cathode materials are summarized in detail.And the development trend of LiNi0.5Mn1.5O4 cathode material is prospected.