采用高温固相反应法制备LiNi_0.8Co_0.1Mn_0.1O₂（NCM811）正极材料。利用TG-DSC、XRD、SEM-EDS、HRTEM对样品进行热分析、物相结构、微观形貌及元素组成分析，对由NCM811正极材料组装的半扣式电池进行倍率性能及长循环性能测试。结果表明，当Ni_0.8Co_0.1Mn_0.1（OH）₂前驱粉体与LiOH·H₂O混合物的预热温度为480℃、混锂配比为1.05∶1、煅烧温度为800℃、煅烧气氛为氧气时，半扣式电池表现出优异的倍率性能和循环性能。

LiNi_0.8Co_0.1Mn_0.1O₂(NCM811) cathode material is prepared via high temperature solid state reaction method.Thermal analysis, phase structure, microstructure and elemental composition of the samples are analyzed by means of thermal gravimetric-differential thermal analysis, X-ray diffraction, scanning electron microscopy-energy dispersive spectroscopy and high-resolution transmission electron microscopy.The rate performance and long-cycle performance of the half-button battery assembled with NCM811 cathode material are tested.It is shown that the half-button battery exhibits excellent multiplier performance and cycle performance when the mixture of Ni_0.8Co_0.1Mn_0.1(OH)₂ precursor powder and LiOH·H₂O is preheated at 480℃, the ratio of mixed lithium is 1.05:1, the calcination temperature of the high-temperature solid-state method is 800℃, and the calcination atmosphere is oxygen.

路韵静(2004-),女,本科生,研究方向为化学工程与工艺,2961547434@qq.com