摘要
综述了近年来有关石墨类负极材料的表面改性与修饰方法,主要有表面氧化还原、掺杂其他元素和形成包覆层等方法,这些方法可有效提高石墨电极的容量、库仑效率及大电流性能,分析了这些方法能提高电极性能的原因并指出了存在的问题。
The research progresses for modification of graphite negative electrode materials for lithium ion batteries in recent years were reviewed. The methods of modification included surface oxidation and reduction, doping other elements, and the surface coating of graphite with a layer of disordered carbon, and so on. Some improvements in capacity, coulombic efficiency and high rate dischargeability of negative graphite materials were achieved. The enhancing of electrochemical performance was analyzed and the problems existing were proposed.
出处
《炭素技术》
CAS
CSCD
2003年第5期27-33,共7页
Carbon Techniques
基金
北京市科技新星计划(954811400)
关键词
锂离子二次电池
石墨负极材料
改性
掺杂
Lithium ion secondary batteries
graphite anode
modification
doping
