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

Chidembo, Alfred T., Ozoemena, Kenneth I., Agboola, Bolade O., Gupta, Vinay, Wildgoose, Gregory and Compton, Richard G. (2010) Nickel(ii) tetra-aminophthalocyanine modified MWCNTs as potential nanocomposite materials for the development of supercapacitors. Energy & Environmental Science, 3 (2). pp. 228-236. ISSN 1754-5692

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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 ± 1 Wkg-1, a maximum specific energy of 134 ± 8 Wh kg-1 and 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) tetra-tert-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
Faculty \ School: Faculty of Science > School of Chemistry
University of East Anglia > Faculty of Science > Research Groups > Physical and Analytical Chemistry
University of East Anglia > Faculty of Science > Research Groups > Synthetic Chemistry
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Depositing User: Rachel Smith
Date Deposited: 29 Mar 2011 17:47
Last Modified: 25 Jul 2018 04:18
URI: https://ueaeprints.uea.ac.uk/id/eprint/27469
DOI: 10.1039/B915920G

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