Enhancing the capacitances of electric double layer capacitors based on carbon nanotube electrodes by carbon dioxide activation and acid oxidization

被引：0
作者：
LI ChenShaQIAO YingJieWU JianJunWANG DaZhi YUAN DianBo Department of Materials ScienceHarbin Engineering UniversityHarbin China Department of Mechanical EngineeringTsinghua UniversityBeijing China [1 ,2 ,1 ,2 ,2 ,2 ,1 ,150001 ,2 ,100084 ]
机构：
来源：
Science China(Technological Sciences) | 2010年 / 05期
关键词：
carbon nanotube; electric double layer capacitor; scan electron microscopy;
D O I：
暂无
中图分类号：
TM53 [电容器];
学科分类号：
080801 ;
摘要：
Polarizable electrodes of electric double layer capacitors(EDLCs) were made from carbon nanotubes(CNTs).Effect of carbon dioxide activation together with acid oxidation for the electrodes on the characteristics and performances of electrodes and EDLCs was studied.Carbon dioxide activation changed the microstructure of the electrodes,increased the effective surface area of CNTs and optimized the distribution of apertures of the electrodes.Acid oxidization modified the surface characteristics of CNTs.Based on the polarizable electrodes treated by carbon dioxide activation and acid oxidization,the performances of EDLCs were greatly enhanced.The specific capacitance of the electrodes with organic electrolyte was increased from 21.8 F/g to 60.4 F/g.
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页码：1234 / 1239
页数：6
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