沥青包覆石墨用作锂离子电池负极材料的研究  

THE STUDY OF PITCH COATING GRAPHITE NEGATIVE ELECTRODE MATERIALS IN Li-ION BATTERY

作　　者：綦瑞萍[1] 杨绍斌 王凤琴 

机构地区：[1]辽宁工程技术大学材料科学与工程系,阜新123000 [2]辽宁工程大学理学院,阜新123000

出　　处：《炭素》2007年第2期16-19,共4页Carbon

摘　　要：锂离子电池因其质量轻,能量密度高等优良性能,是近几年来电化学界研究的热点。但锂离子电池用石墨作负极还存在一些问题,需要对石墨改性处理。本文介绍了石墨的一种改性方法:沥青包覆石墨法,可有效降低石墨的比表面积,从而大幅度提高了石墨负极材料的首次可逆容量和库仑效率,改善电池的循环性能等。Lithium-ion battery is becoming the power sources of choice for modern consumer electronic devices ,because of its small mass density and large capacity density. The method for modification of graphite negative electrode in lithium-ion batteries is reviewed from the essences of graphite modification：pitch coating graphite. With this method,surface area could be reduced effectively and the first reversible capacity and coulombic efficiency are improved.

关 键 词：锂离子电池 石墨 负极材料 沥青 包覆 

分 类 号：TQ127.11[化学工程—无机化工]