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Nickel(II) tetra-aminophthalocyanine modified MWCNTs as potential nanocomposite materials for the development of supercapacitors

Alfred, T and Ozoemena, I and Bolade, O and Vinay , G and Gregory, G and Richard , G (2009) Nickel(II) tetra-aminophthalocyanine modified MWCNTs as potential nanocomposite materials for the development of supercapacitors. Energy & Environmental Science . pp. 228-236.

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Abstract

The supercapacitive properties of nickel(II) tetraaminophthalocyanine (NiTAPc)/multi-walled carbon nanotube (MWCNT) nanocomposite films have been interrogated for the first time and found to possess a maximum specific capacitance of 981±57 F g-1 (200±12 mF cm-2), a maximum power density of 700±1Wkg-1, a maximum specific energy of 134±8 Wh kg-1and excellent stability of over 1500 charge-discharge continuous cycling. Impedimetric study proves that most of the stored energy of the MWCNT-NiTAPc nanocomposite can be accessible at high frequency (720 Hz). When compared to MWCNTs modified with unsubstituted nickel(II) phthalocyanine (MWCNT-NiPc) or nickel(II) tetratert- butylphthalocyanine (MWCNT-tBuNiPc), MWCNT-NiTAPc exhibited superior supercapacitive behaviour, possibly due to the influence of nitrogen-containing groups on the phthalocyanine rings.

Item Type:Article
Subjects:Technology > Nanotechnology and energy applications
ID Code:8966
Deposited By:Mr Saleh Khamlich
Deposited On:22 Apr 2011 14:00
Last Modified:22 Apr 2011 14:00

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