锂离子电池正极材料LiNi0.5Mn1.5O4改性研究进展

摘要

尖晶石结构正极材料LiNi0.5Mn1.5O4因具有理论比容量高、比能量大、放电平台高(～4.7 V)、价格低廉等优点而备受关注.但该材料循环性能和倍率性能不佳,制约着材料的推广应用.主要综述通过掺杂、包覆、形貌控制等手段来提高该材料电化学性能的最新研究进展,旨在为提升该材料性能的相关研究提供参考.%Spinel LiNi0.5Mn1.5O4 has been paid extensive attention owing to its high theoretical capacity,high energy density,high discharge platform (4.7 V) and low price.However,the rate capability and cycle performance of spinel LiNi0.5Mn1.5O4 are not good enough.In order to address these issues,the materials have been improved by modification.The recent researches on modification of LiNi0.5Mn1.5O4 cathode materials were reviewed,such as doping,surface coating and morphology controlling.