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

Alfred T. Chidembo | Zendy; Kenneth I. Ozoemena | Zendy; Bolade O. Agboola | Zendy; Vinay Gupta | Zendy; Gregory G. Wildgoose | Zendy; Richard G. Compton | Zendy

Open Access

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

Author(s) -

Alfred T. Chidembo,

Kenneth I. Ozoemena,

Bolade O. Agboola,

Vinay Gupta,

Gregory G. Wildgoose,

Richard G. Compton

Publication year - 2009

Publication title -

energy and environmental science

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 14.486

H-Index - 343

eISSN - 1754-5706

pISSN - 1754-5692

DOI - 10.1039/b915920g

Subject(s) - supercapacitor , nanocomposite , nickel , materials science , carbon nanotube , phthalocyanine , capacitance , chemical engineering , tetra , specific energy , nanotube , nanotechnology , electrode , chemistry , metallurgy , physics , quantum mechanics , medicinal chemistry , engineering

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) tetratert- butylphthalocyanine (MWCNT-tBuNiPc), MWCNT-NiTAPc exhibited superior supercapacitive behaviour, possibly due to the influence of nitrogen-containing groups on the phthalocyanine rings

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