改性球形微晶石墨用作锂离子电池负极材料的研究  

Study on Modified Spherical Microcrystalline Graphite as Anode Materials for Li-ion Batteries

作　　者：何月德[1] 刘洪波[1] 石磊[1] 洪泉[1] 夏笑虹[1] 杨丽[1] 陈惠[1] 

机构地区：[1]湖南大学材料科学与工程学院,湖南长沙410082

出　　处：《湖南大学学报（自然科学版）》2009年第11期44-46,61,共4页Journal of Hunan University:Natural Sciences

基　　金：国家自然科学基金资助项目(50872032)

摘　　要：为了改善用作锂离子电池负极材料的球形微晶石墨的电化学性能,采用液相浸渍工艺在石墨颗粒表面上包覆一层树脂炭.结果表明:经包覆后,石墨颗粒表面更为光滑,其首次充放电循环效率从包覆前的81.0%提高到了92.7%,且首次可逆比容量也有所增加.To improve the electrochemical performance of spherical microcrystalline graphite （SMCG） as anode material for Li-ion battery, resin was coated on the surface of SMCG by means of liquid impregnation. The result showed that the surface of SMCG became smoother after the coating. The coating improved the cycle efficiency of material, from 81.0% before coating to 92.7% after coating.

关 键 词：包覆 球形微晶石墨 负极材料 锂离子电池 

分 类 号：TM912.9[电气工程—电力电子与电力传动]