Improving the electrocapacitive properties of mesoporous CMK-5 carbon with carbon nanotubes and nitrogen doping

Lei, Zhibin, Bai, Dan and Zhao, X. S. (2012) Improving the electrocapacitive properties of mesoporous CMK-5 carbon with carbon nanotubes and nitrogen doping. Microporous and Mesoporous Materials, 147 1: 86-93. doi:10.1016/j.micromeso.2011.06.002


Author Lei, Zhibin
Bai, Dan
Zhao, X. S.
Title Improving the electrocapacitive properties of mesoporous CMK-5 carbon with carbon nanotubes and nitrogen doping
Journal name Microporous and Mesoporous Materials   Check publisher's open access policy
ISSN 1387-1811
1873-3093
Publication date 2012-01-01
Year available 2011
Sub-type Article (original research)
DOI 10.1016/j.micromeso.2011.06.002
Open Access Status Not yet assessed
Volume 147
Issue 1
Start page 86
End page 93
Total pages 8
Place of publication Amsterdam, Netherlands
Publisher Elsevier
Language eng
Formatted abstract
Nitrogen-containing carbon composite materials composed of mesoporous carbon CMK-5 and carbon nanotubes (CNTs) were prepared by the chemical vapor deposition method with Fe(NO3)3-impregnated SBA-15 as template and pyridine as the carbon precursor. The Fe nanoparticles confined in the channels of SBA-15 induced the formation of mesoporous carbon characteristic of CMK-5, whereas Fe particles homogeneously dispersed on the external surface of SBA-15 served as catalysts for CNTs growth. The contents of CNTs, the N doping level and the microstruture of the carbon composite were closely related to the initial Fe/Si atomic ratio in SBA-15 template. Incorporation of CNTs in the composite was found to substantially reduce the electric resistance, leading to the composite materials exhibiting excellent rate-performance. A maximum specific capacitance of 208 F/g and a power density of 10 kW/kg were achieved in 6.0 mol/L KOH aqueous electrolyte when these carbon composites were applied as supercapacitor electrodes. Moreover, the composite electrode also exhibited good electrochemical stability with no capacitance loss after 1000 cycles of galvanostatic charge–discharge process.
Keyword Nitrogen-doped CMK-5
Carbon nanotube
Chemical vapor deposition
Supercapacitive performance
Q-Index Code C1
Q-Index Status Confirmed Code
Grant ID MOE2008-T2-1-004
Institutional Status Non-UQ
Additional Notes Available online 15 June 2011

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Chemical Engineering Publications
Non HERDC
 
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