摘要
采用高温固相反应法制备LiNi_(0.8)Co_(0.1)Mn_(0.1)O_(2)(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_(0.8)Co_(0.1)Mn_(0.1)(OH)_(2)前驱粉体与LiOH·H_(2)O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_(0.8)Co_(0.1)Mn_(0.1)O_(2)(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_(0.8)Co_(0.1)Mn_(0.1)(OH)_(2) precursor powder and LiOH·H_(2)O 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.
作者
路韵静
罗诗健
任治丞
张鹏骞
孙念
李翠芹
LU Yun-jing;LUO Shi-jian;REN Zhi-cheng;ZHANG Peng-qian;SUN Nian;LI Cui-qin(North Alabama International College of Engineering and Technology,Guizhou University,Guiyang 550025,China;School of Chemistry and Chemical Engineering,Guizhou University,Guiyang 550025,China)
出处
《现代化工》
CAS
CSCD
北大核心
2023年第11期156-164,共9页
Modern Chemical Industry
基金
贵州省教育厅教改项目(2021013)
贵州省大学生创新创业训练计划项目[贵大(省)创字2021(124)]。
