锂离子电池镍钴铝酸锂正极材料研究进展

Research progress on LiNiCoAlO cathode material for Li-ion battery

镍钴铝酸锂正极材料因高比容量和较低的成本而被认为是最具潜力的下一代高能量密度锂离子电池正极材料。但其结构和界面不稳定性导致较差的循环性能、倍率性能及热稳定性。总结并讨论了镍钴铝酸锂正极材料在充放电过程中的衰减机理及相应的改性研究,并对镍钴铝酸锂正极材料进一步的研究进行了展望。

LiNixCoyAl1-x-yO_(2) cathode materials have been considered as the most promising material for the next generation high-energy density Li-ion batteries due to their high specific capacity and low cost.However,their structure and interface instability lead to poor cycle performance,rate capability and thermal stability.The researches on attenuating mechanisms during cycling and their corresponding modification were summarized,and prospected further researches on the LiNixCoyAl1-x-yO_(2) cathode materials.