富镍三元层状氧化物LiNi0.8Co0.1Mn0.1O2正极材料

Rich-Nickel Ternary Layered Oxide LiNi0.8Co0.1Mn0.1O2 Cathode Material

富镍三元层状氧化物LiNi0.8Co0.1Mn0.1O2(NCM811)由于其可逆容量高、环境友好、价格低廉等优势,被认为是下一代锂离子电池最具潜力的正极材料之一。然而,NCM811存在着热稳定性差、充放电过程中结构易发生相变、安全性低等缺点,阻碍了其大规模生产。随着材料制备技术的不断进步,NCM811的电化学性能有了极大的提高。本文综述了近几年来富镍层状氧化物NCM811正极材料的最新研究进展,重点对该材料存在的问题与失效机制、合成方法、改进措施和理论计算模拟研究进行了深入阐述,并对NCM811未来发展作了展望。

Nickel-rich ternary layered oxide LiNi0.8Co0.1Mn0.1O2(NCM811) is considered to be one of the most potential cathode materials in the next generation lithium-ion batteries due to its high reversible capacity, environmentally friendly feature and low cost. However, this kind of cathode material is suffering from the poor thermal stability, phase transition during the charge-discharge process and safety issue, which hinders its further practical application. With the deepening of researches and development of fabrication methods, the electrochemical properties of NCM811 have been significantly improved. In this paper, the recent research progress of nickel-rich layered oxide NCM811 cathode material has been reviewed. We mainly focus on the problems and declined mechanisms, synthesis methods, improvement measures and theoretical calculation simulation studies of NCM811, and also make a brief outlook for the future development of nickel-rich ternary layered oxide NCM811.