华中师范大学学报（自然科学版）2017，Vol.51Issue(5)：632-637,6.DOI:10.19603/j.cnki.1000-1190.2017.05.013
不同载硅量对Li2FeSiO4/C材料电性能的影响
Effects of different silicon loading on electrochemical properties of Li2FeSiO4/C materials
摘要
Abstract
Multi-walled carbon nanotubes coated with SiO2 (MWCNTs@SiO2) were prepared by liquid phase method with carbon nanotubes and Si(OC2H5)4 as raw materials.By adjusting the amount of Si(OC2H5)4,MWCNTs@SiO2 precursors with different amount of silica were prepared,from which precursors of lithium iron silicate materials Li2FeSiO4/C were synthesized.By using X ray diffraction (XRD),scanning electron microscopy (SEM),transmission electron microscopy (TEM) and constant current charge discharge Li2FeSiO4/C materials were characterized with their electrochemical performance examined.Results showed that particle size of Li2FeSiO4/C materials synthesized from MWCNTs@SiO2 precursor with the silicon loading capacity of 35.72％ were consistent,and stable discharge capacity of 180 mAh · g-1 was generated by these materials after 50 cycles in the current density of 0.1 C,which suggesting that these materials possess excellent electrochemical performance.关键词
锂离子电池/Li2FeSiO4/电化学性能Key words
lithium batteries/Li2FeSiO4/C/electrochemical performances分类
化学化工引用本文复制引用
伍雪梅,马晓玲,吴小珍,张友祥..不同载硅量对Li2FeSiO4/C材料电性能的影响[J].华中师范大学学报（自然科学版）,2017,51(5):632-637,6.基金项目
湖北省自然科学基金项目(2016CFB693) （2016CFB693）
武汉市青年科技晨光计划项目(2017050304010274). （2017050304010274）
