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Electrochemical Capacitive Behaviour of Multiwalled Carbon Nanotubes Modified with Electropolymeric Films of Nickel Tetraaminophthalocyanine
Author(s) -
Chidembo Alfred T.,
Ozoemena Kenneth I.
Publication year - 2010
Publication title -
electroanalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 128
eISSN - 1521-4109
pISSN - 1040-0397
DOI - 10.1002/elan.201000290
Subject(s) - materials science , capacitance , electrochemistry , capacitive sensing , nickel , carbon nanotube , electrode , supercapacitor , nanotube , chemical engineering , dielectric spectroscopy , carbon fibers , nanotechnology , composite material , metallurgy , chemistry , composite number , electrical engineering , engineering
Electrochemical capacitive behaviour of the electropolymeric nickel tetra‐aminophthalocyanine (poly‐NiTAPc) supported on multiwalled carbon nanotube (MWCNT) platform is described. From the data in 1 M H 2 SO 4 , the MWCNT‐poly‐NiTAPc exhibited superior capacitance (112 mF cm −2 or 777 F g −1 ). The supercapacitance of the MWCNT‐polyNiTAPc was found to be much better in 1 M H 2 SO 4 than in 1 M NaOH medium. Impedance data proved that most of the stored energy of the MWCNT‐poly‐NiTAPc could be accessible at high frequency (1.6 kHz). The electrode is capable of undergoing continuous charge‐discharge process for more than a 1000 cycles without any significant deterioration in the stability.