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Citation: Jiang Qi, Lu Xiao-Ying, Zhao Yong, Yu Zuo-Long. Effect of Microstructure’s Change on Electrochemical Capacitance of Carbon Nanotubes[J]. Acta Physico-Chimica Sinica, ;2004, 20(05): 546-549. doi: 10.3866/PKU.WHXB20040520 shu

Effect of Microstructure’s Change on Electrochemical Capacitance of Carbon Nanotubes

1.
School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu　610031;Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu　610041

Received Date: 15 October 2003
Available Online: 15 May 2004

Activated carbon nanotubes were obtained by the activation of carbon nanotubes using KOH as activator at high temperature. The specific surface area and pore volume of the obtained activated carbon nanotubes were 3 and 1.5 times as large as that of the pristine carbon nanotubes, respectively. The two kinds of carbon nanotubes were used as the electrode materials of electrochemical supercapacitors and the simulated electrochemical supercapacitors were assembled in the glove box filled with ar n air. The electrochemical capacitance of the activated carbon nanotubes was twice as large as that of the pristine carbon nanotubes by test under constant current chargingdischarging. So, the activated carbon nanotubes with a short cut length and rough tube surface are more suitable in using as the electrode materials of electrochemical supercapacitors than the normal carbon nanotubes.
- Electrochemical supercapacitors;Carbon nanotubes (CNTs);Activation
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