高等学校化学学报Issue(10)：1990-1994,5.DOI:10.7503/cjcu20150241
MoO2/C 共包覆 Si/石墨复合锂离子电池负极材料的研究
MoO2/C Co-coated Si/graphite Composite as Anode Materials for Lithium Ion Batteries†
摘要
Abstract
A sol-gel method was used to fabricate MoO2 and C co-coated Si/ graphite particles to form Si/ graphite / MoO2 / carbon(SGMC) composite as anode materials for lithium ion batteries. X-ray diffraction (XRD), scanning electron microscopy(SEM), transmission electron microscopy(TEM), cyclic voltammetry (CV) and electrochemical impedance spectroscopy( EIS) were utilized to characterize the morphology and properties of the composite. The MoO2 / C double coating has inhibited the volume expansion, improved the electronic conductivity and lithium ion mobility, and further improved the electrochemical performances. Electrochemical tests showed that the first charge capacities of SGMC composite was 2494 mA·h / g with an initial coulombic efficiency of 72% . The charge capacity maintained 636. 6 mA·h / g over 100 cycles.关键词
MoO2 / C 共包覆 Si/ 石墨/锂离子电池/溶胶-凝胶法/负极材料Key words
MoO2 / C co-coated Si/ graphite/Lithium ion battery/Sol-gel method/Anode material分类
化学化工引用本文复制引用
尹红,周丹,丛丽娜,谢海明,仇永清..MoO2/C 共包覆 Si/石墨复合锂离子电池负极材料的研究[J].高等学校化学学报,2015,(10):1990-1994,5.基金项目
国家“八六三”计划项目(批准号:2013AA110103)资助.? Supported by the National High Technology Research and Development Program of China(No.2013AA110103) （批准号:2013AA110103）
