摘要
在活性炭电极材料中,用多壁纳米碳管作导电添加剂替代传统的炭黑、石墨粉等可较大地改善电极材料的性能。当添加质量分数为5%的多壁纳米碳管时,活性炭电化学电容器的比电容量由添加同量炭黑的130 F/g增加到185 F/g,同时提高了活性炭电容器的频率响应性能。基于该研究结果试制出不同规格的添加多壁纳米碳管的活性炭电化学电容器样品,结果表明添加多壁纳米碳管的活性炭电极材料具有良好的电化学电容特性。
Multi-walled carbon nanotubes (MWNTs) were used as a conducting additive in activated carbon electrode materials instead of the commonly used carbon black and graphite powder conducting additive. It was found that MWNTs can greatly improve the capacitor performance. When 5 w/% MWNT conducting additive was used, the specific capacitance of activated carbon can be increased to 185 F/g compared with 130 F/g of activated carbon with 5 w/% carbon black conducting additive, and the frequency response characteristic of the MWNT-added activated carbon electrochemical capacitor is much better than that of one with added carbon black. Moreover, some prototype electrochemical capacitors were fabricated on the basis of the research results. All these show that activated carbon with added MWNTs has a good capacitance performance and is suitable for application in electrochemical capacitors.
出处
《新型炭材料》
SCIE
EI
CAS
CSCD
北大核心
2005年第3期205-210,共6页
New Carbon Materials
基金
国家自然科学基金(50328204)
国家高技术研究和发展项目(2002AA302401)~~
关键词
纳米碳管
活性炭
电化学电容器
比电容量
导电添加剂
Carbon nanotube
Activated carbon
Electrochemical capacitor
Specific capacitance
Conducting additive