层状镍基锂离子电池正极材料的改性研究

Modification of layered Ni-based canode material for lithium-ion battery

详细阐述了国内外关于层状LiNiO2正极材料的改性研究进展,并对体相掺杂和表面包覆改性层状LiNiO2正极材料电化学性能提高的机理进行了讨论,最后对层状LiNiO2正极材料今后的发展方向进行了展望。

Layered Ni-based anode（LiNiO2） has been considered as a potential anode material for use in high-energy lithium-ion batteries because of its low cost and high energy density.However,layered LiNiO2 showed poor structural and thermal stability,which restricted its commercialization.The progress of ion substitution and surface treatment for layered LiNiO2 to improve the structural and thermal stability at home and abroad was described in detail,which ion substitution for the material was studied including single element substitution and multi-element substitution.Surface modification for the material was researched mainly from the type of coating materials which including metal oxide,metal phosphate and metal fluoride.The reason of enhanced electrochemical performance of ion substitution and surface treatment for layered LiNiO2 was also discussed.Finally,some future directions for layered LiNiO2 were pointed out.