Effect of acid oxidization of carbon nanotube electrode on the capacitances of double layer capacitors

被引：1

作者：

Li, CS ^{[1
]}

Wang, DH

Liang, TX

Wang, XF

Ji, L

机构：

[1] Tsinghua Univ, Dept Mech Engn, Beijing 100084, Peoples R China

[2] Tsinghua Univ, Inst Nucl Energy Technol, Beijing 102201, Peoples R China

来源：

SCIENCE IN CHINA SERIES E-TECHNOLOGICAL SCIENCES | 2004年 / 47卷 / 03期

关键词：

carbon nanotubes; electric double layer capacitor; specific capacitance;

D O I：

10.1360/03ye0336

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Polarizable electrode of electric double layer capacitor was made from carbon nanotubes. The effect of acid oxidation of electrode on the specific capacitance was studied. Oxidation removed the redundant carbon, expanded the pore size and introduced some kinds of functional groups on the surface of CNTs. The specific capacitance of the electrodes with organic electrolyte was increased from 21.4 to 49.6 F/g after being oxidized at a volume ratio of H2SO4 to HNO3 of 3:1.

引用

页码：257 / 264

页数：8

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