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CVD synthesis of carbon nanotubes using a finely dispersed cobalt catalyst and their use in double layer electrochemical capacitors

DSpace at IIT Bombay

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Title CVD synthesis of carbon nanotubes using a finely dispersed cobalt catalyst and their use in double layer electrochemical capacitors
 
Creator CHATTERJEE, AK
SHARON, M
BANERIEE, R
NEUMANN-SPALLART, M
 
Subject chemical-vapor-deposition
fullerene tubules
supercapacitor
electrodes
nanobeads
camphor
carbon nanotube
cvd
synthesis
double layer capacitor
turpentine oil
 
Description Carbon nanotubes (CNT) were obtained by chemical vapour deposition (CVD), decomposing turpentine oil over finely dispersed Co metal as a catalyst at 675 degreesC. Scanning electron microscope (SEM) and transmission electron microscope (TEM) images reveal that the nanotubes are densely packed and of 10-50 nm in diameter. The XRD pattern of purified CNT shows that they are graphitic in nature. Resistivity measurements of these CNT indicate that they are highly conducting. Hall measurements of CNT reveal that electrons are the majority carriers with a carrier concentration of 1.35 X 10(20) cm(-3). Cyclic voltammetry (CV) and constant current charging/discharging was used to characterise the behaviour of electrochemical double layer capacitors of purified CNT with H2SO4. For CNT/2 M H2SO4/CNT, a capacitance of 12 F g(-1) (based on the weight of the active material) was obtained. (C) 2003
 
Publisher PERGAMON-ELSEVIER SCIENCE LTD
 
Date 2011-08-23T23:21:40Z
2011-12-26T12:56:39Z
2011-12-27T05:45:42Z
2011-08-23T23:21:40Z
2011-12-26T12:56:39Z
2011-12-27T05:45:42Z
2003
 
Type Article
 
Identifier ELECTROCHIMICA ACTA, 48(23), 3439-3446
0013-4686
http://dx.doi.org/10.1016/S0013-4686(03)00427-4
http://dspace.library.iitb.ac.in/xmlui/handle/10054/10685
http://hdl.handle.net/10054/10685
 
Language en