Polyaniline/single-wall carbon nanotube (PANI/SWCNT) composites for high performance supercapacitors

Vinay Gupta, Norio Miura

Research output: Contribution to journalArticlepeer-review

396 Scopus citations

Abstract

PANI/SWCNT composites were prepared by electrochemical polymerisation of polyaniline onto SWCNTs and their capacitive performance was evaluated by means of cyclic voltammetry and charge-discharge cycling in 1 M H2SO4 electrolyte. The PANI/SWCNT composites single electrode showed much higher specific capacitance, specific energy and specific power than pure PANI and SWCNTs. The highest specific capacitance, specific power and specific energy values of 485 F/g, 228 W h/kg and 2250 W/kg were observed for 73 wt.% PANI deposited onto SWCNTs. PANI/SWCNT composites also showed long cyclic stability. Based upon the variations in the surface morphologies and specific capacitance of the composite, a mechanism is proposed to explain enhancement in the capacitive characteristics. The PANI/SWCNT composites have demonstrated the potential as excellent electrode materials for application in high performance supercapacitors.

Original languageBritish English
Pages (from-to)1721-1726
Number of pages6
JournalElectrochimica Acta
Volume52
Issue number4
DOIs
StatePublished - 1 Dec 2006

Keywords

  • Composite
  • Deposition
  • Polyaniline
  • Single-wall carbon nanotube
  • Supercapacitor

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