摘要
采用差热分析法研究了不同升温速率下锰酸锂前驱体所发生的分解反应,通过Kissinger法和Doyle Ozawa法对不同反应阶段的活化能进行计算,同时通过扫描电镜、粒度分析仪、X射线衍射仪对所得样品的微观形貌进行观察分析,结果表明,通过共沉淀法与煅烧法相结合制备所得LiMn_2O_4的物相纯净,粒度分布均匀,形貌规整。
The decomposition reaction of lithium manganese oxide precursor at different heating rates was studied by differential thermal analysis.The activation energies of different reaction stages were calculated by Kissinger method and DoyleOzawa method.The microstructure of the samples was observed and analyzed by scanning electron microscope,particle size analyzer and X-ray diffraction.The results show that the LiMn2O4 prepared by the co precipitation method and the calcination method are pure,the particle size distribution is uniform,and the morphology is regular.
出处
《电源技术》
CAS
CSCD
北大核心
2017年第10期1405-1406,1426,共3页
Chinese Journal of Power Sources
基金
2016年度河南省社科联
河南省经团联调研课题(SKL-2016-2694)