锂离子电池高镍正极材料的合成与改性研究进展

Synthesis and Modification Research Progress of Ni-rich Cathode Materials for Lithium-Ion Battery

电动汽车、智能手机等领域的迅速发展促使人们开发高能量密度、长寿命、高安全性和低成本的锂离子电池。高镍材料具有比容量高、成本较低的优点,近年来成为锂离子电池正极材料的研究热点。然而,其表面残锂、阳离子混排、表面重构和晶界微裂纹等问题降低了高镍正极材料的安全性和稳定性。对高镍正极材料近期的研究进展和未来的发展方向进行了总结和展望。

The fast development of electric vehicles and smart phones urges for high energy density,long life,safe and lowcost Lithium-ion batteries.Owing to the high capacity and low cost,Ni-rich cathode materials have attracted great research interest in Lithium-ion battery.However,the problems of Lithium residual,cation mixing,surface reconstruction and microcrack impedes the safety and stability of Ni-rich cathode materials.This paper summarizes the recent research progress of synthesis and modification of Ni-rich cathode materials and the future research direction.