摘要
通过浸渍等方法制得改性石墨材料,提高了复合材料的可逆嵌锂容量,改善了其大电流性能及循环使用寿命。应用电子扫描显微镜(SEM)及恒电流充放电技术研究改性石墨材料的表面物理形态及在不同电流密度下的充放电性能特征,认为改性后的石墨更加适合作为石墨/炭非对称电化学电容的负极材料。
Some modifications are carried out to improve the performance of natural graphite. The results show that it could increase the reversible capacity and cycling performance in high rate condition. The surface morphology and charge/discharge properties of the modified graphite are investigated by means of SEM and constant current charge/discharge technology. Modified graphite is more suitable for grahite/C asymmetric electrochemical capacitor as anode material.
出处
《材料导报》
EI
CAS
CSCD
北大核心
2006年第12期121-123,共3页
Materials Reports
基金
国家重点基础研究发展计划(2002CB211800)资助
关键词
聚苯基硅氧烷
热解碳
包覆
负极
电化学电容器
polysiloane, pyrolytic carbon, modification, anode, electrochemical capacitor
