中文摘要：

采用高温固相法合成锂离子电池富镍三元材料LiNi（0.8）Co（0.1）Mn（0.1）O2,对其工艺条件进行优化,对产物进行X射线衍射（XRD）,扫描电镜（SEM）以及电化学性能分析。结果表明：在氧气气氛下,锂与金属元素摩尔比为1.05：1、烧结时间15 h、烧结温度750℃为最佳合成工艺条件。按最佳工艺合成的样品在1C首次放电容量高达174.9mA·h·g^-1,50次循环后比容量为158.5 mA·h·g^-1,容量保持率为90.62%,表现出良好的循环稳定性。XRD和SEM表征表明,在氧气气氛下烧结的样品有良好的层状结构,阳离子混排程度小,具有较好的类球形,粒径均匀分布在10-20μm。循环伏安（CV）和电化学阻抗（EIS）结果表明,工艺条件的优化有助于提高正极材料的电化学性能。

英文摘要：

Ni-rich ternary cathode material LiNi（0.8）Co（0.1）Mn（0.1）O2 for lithium-ion battery was synthesized by a high-temperature solid-state reaction method, and its process conditions were optimized. The structural and morphological features of LiNi（0.8）Co（0.1）Mn（0.1）O2 cathode material prepared were investigated with X-ray diffraction and scanning electron microscopy. Its electrochemical properties were analyzed. The results showed that under the oxygen atmosphere, the molar ratio of lithium to metal elements was 1.05：1, the sintering time was 15 h and the sintering temperature was 750℃, the optimal synthesis conditions were obtained. The initial discharge capacity of the sample was 174.9 mA·h·g^-1 at 1C, the specific capacity was 158.5 mA·h·g^-1 after 50 cycles, and the capacity retention rate was 90.62%, which showed good cycle stability. The results of XRD and SEM showed that the sample sintered in oxygen atmosphere had a good layered structure with a small degree of cationic mixing and a good spherical shape. The particles were uniformly distributed in the range of 10—20 μm. The results of cyclic voltammetry（CV） and electrochemical impedance spectroscopy（EIS） showed that the electrochemical performance of the cathode materials was improved by optimization conditions.