高等学校化学学报2017，Vol.38Issue(8)：1436-1441,6.DOI:10.7503/cjcu20160925
锂离子电池正极材料Li2FeSiO4/C的冻干干燥法制备及电化学性质
Freeze-drying Synthesis and Characterization of Li2FeSiO4/C Cathode Materials for Lithium Ion Batteries
摘要
Abstract
Li2FeSiO4/C nanocomposites were prepared by freeze-dying synthesis.X-ray diffraction, Raman spectrometry, field emission scanning electron microscopy and N2 adsorption-desorption were used to investigate the effect of dry method on the physical characteristics of Li2FeSiO4/C.The results show that Li2FeSiO4 obtained by freeze-drying method(DG) exhibits smaller particle size and larger specific surface area.The electrochemical performance was studied by galvanostatic charge-discharge and electrochemical impedance spectra.Compared to the Li2FeSiO4 obtained by ordinary drying method(HG), DG exhibits better rate capability, and the discharge capacity of 106.7 mA·h/g can be achieved at 2C rate.关键词
锂离子电池/正极材料/硅酸亚铁锂/冻干法Key words
Lithium ion battery/Cathode material/Li2FeSiO4/Freeze-drying分类
化学化工引用本文复制引用
张冬,李浩鸣,邱海龙,陈岗,岳惠娟,刘安华..锂离子电池正极材料Li2FeSiO4/C的冻干干燥法制备及电化学性质[J].高等学校化学学报,2017,38(8):1436-1441,6.基金项目
吉林省科技厅科技发展计划项目(批准号: 20150204030GX)、 吉林省自然科学基金(批准号: 20160101320JC)和厦门大学高性能陶瓷纤维教育部重点实验室开放课题(批准号: 201602)资助.Supported by the Science and Technology Development Planning of Jilin Province, China(No.20150204030GX), the Natural Science Foundation of Jilin Province, China(No.20160101320JC) and the Open Fund of Key Laboratory of High Performance Ceramic Fibers, Ministry of Education, Xiamen University, China(No.201602). （批准号: 20150204030GX）
