Details

Autor(en) / Beteiligte

• Chidembo, Alfred T
• Ozoemena, Kenneth I
• Agboola, Bolade O
• Gupta, Vinay
• Wildgoose, Gregory G
• Compton, Richard G

Titel

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

Ist Teil von

• Energy & environmental science, 2010-01, Vol.3 (2), p.228-236

Erscheinungsjahr

2010

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• 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.