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

被引：140

作者：

Chidembo, Alfred T. ^{[1
]}

Ozoemena, Kenneth I. ^{[1
,2
]}

Agboola, Bolade O. ^{[2
]}

Gupta, Vinay ^{[3
]}

Wildgoose, Gregory G. ^{[4
]}

Compton, Richard G. ^{[4
]}

机构：

[1] Univ Pretoria, Dept Chem, ZA-0002 Pretoria, South Africa

[2] CSIR, Energy & Proc Unit, ZA-0001 Pretoria, South Africa

[3] Natl Phys Lab, Carbon Technol Unit, New Delhi 110012, India

[4] Univ Oxford, Phys & Theoret Chem Lab, Oxford, England

来源：

ENERGY & ENVIRONMENTAL SCIENCE | 2010年 / 3卷 / 02期

关键词：

WALLED CARBON NANOTUBES; ELECTRODE MATERIAL; DEPOSITION METHOD; FILMS; SURFACE; ELECTROCATALYSIS; PERFORMANCE; PHTHALOCYANINES; MICROSTRUCTURE; SPECTROSCOPY;

D O I：

10.1039/b915920g

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

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

引用

页码：228 / 236

页数：9

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