化工学报2025，Vol.76Issue(4)：1831-1840,10.DOI:10.11949/0438-1157.20240983
NCM622正极材料结构形态和储锂特性的同步演变
Simultaneous evolution of structural morphology and lithium storage properties in NCM622 cathode material
摘要
Abstract
The secondary battery based on lithium-ion battery has entered the mainstream.LiNi1-x-yCoxMnyO2(NCM)material also has a considerable commercial market in lithium-ion batteries,and is a cathode material with great application value.It has different properties depending on the nickel content.The increase of nickel ratio can increase the specific capacity,but it will also lead to the decrease of thermal stability.Therefore,high-nickel materials require higher requirements on the preparation process to ensure their performance.Compared with Li[Ni0.8Co0.1Mn0.1]O2(NCM811),Li[Ni0.6Co0.2Mn0.2]O2(NCM622)has higher specific capacity and better thermal stability.The pure phase NCM622 material is prepared using a hydrothermal method,and the optimal preparation plan is obtained by controlling the calcination temperature and calcination time.The prepared NCM622 material can achieve a discharge specific capacity of up to 191.3 mA·h·g-1 under optimal conditions,and the charge-discharge cycle can also have a capacity retention rate of up to 88.74％.关键词
锂离子电池/正极材料/层状氧化物/电化学Key words
lithium ion battery/cathode materials/layered oxides/electrochemistry分类
化学化工引用本文复制引用
李坤,黄锐,丛君,马海涛,常龙娇,罗绍华..NCM622正极材料结构形态和储锂特性的同步演变[J].化工学报,2025,76(4):1831-1840,10.基金项目
国家自然科学基金项目(52274295) （52274295）
河北省自然科学基金重点项目(E2021501029) （E2021501029）
中央高校基本科研基金项目(N2423053) （N2423053）
驻冀高校与石家庄市产学研合作项目基础研究专项重点项目(241790937A) （241790937A）
2023年度秦皇岛市科学技术研究与发展计划项目(202302B006) （202302B006）
