Paper Title:
Supercapacitor from Nitrogen-Doped Carbon Nanotubes
  Abstract

CNTs were treated with hydrazine hydrate and diethylenetriamine, respectively. Scanning electron spectroscopy (SEM) observation showed that the doped CNTs kept the length/diameter ratio of pristine CNTs. X-ray photoelectron spectroscopy (XPS) characterized that nitrogen can be doped to CNTs. XPS analysis further indicated that C/N atomic ratio of CNTs treated by hydrazine hydrate is 95/2, four times of CNTs treated by diethylenetriamine, which is 96/0.5. The hydrophilicity for N-doped CNTs (N-CNTs) is much improved and enhanced by increasing N proportion. As electrode material of supercapacitor, nitrogen functional groups contribute pseudo-Faradic capacitance, but its cyclic performance still need to be improved. Thanks to the good hydrophilicity for N-CNTs that improves the wettability of CNTs for electrolyte; the specific capacitance of N-CNTs is still slightly higher than pristine CNTs after cycling.

  Info
Periodical
Advanced Materials Research (Volumes 160-162)
Edited by
Guojun Zhang and Jessica Xu
Pages
1791-1796
DOI
10.4028/www.scientific.net/AMR.160-162.1791
Citation
L. X. Li, Y. C. Liu, X. Gen, B. G. An, "Supercapacitor from Nitrogen-Doped Carbon Nanotubes", Advanced Materials Research, Vols. 160-162, pp. 1791-1796, 2011
Online since
November 2010
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Price
$32.00
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