Ternary nanocomposite SWNT/WO3/PANI thin film electrodes for supercapacitors

Yuksel R., DURUCAN C., ÜNALAN H. E.

JOURNAL OF ALLOYS AND COMPOUNDS, vol.658, pp.183-189, 2016 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 658
  • Publication Date: 2016
  • Doi Number: 10.1016/j.jallcom.2015.10.216
  • Journal Name: JOURNAL OF ALLOYS AND COMPOUNDS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.183-189
  • Keywords: Single walled carbon nanotubes, Tungsten oxide, Polyaniline, Supercapacitors, Ternary nanocomposites, Electrodeposition, CARBON NANOTUBE, TUNGSTEN-OXIDE, POLYANILINE, TRANSPARENT, PERFORMANCE, ENERGY, DESIGN, XPS
  • Middle East Technical University Affiliated: Yes

Abstract

We describe a simple and fast process for the fabrication of ternary nanocomposite supercapacitor electrodes. In this work, thin film supercapacitor electrodes made up of binder-free single walled carbon nanotube (SWNT) thin films were deposited onto glass substrates by vacuum filtration followed by stamping method. Next, tungsten oxide (WO3) and polyaniline (PANI) were electrodeposited on the SWNT thin films. Combination of SWNTs and pseudocapacitive WO3 and PANI created a synergistic and complementary effect, which enhanced the electrochemical energy storage capacity. A specific capacitance of 28.5 mF/cm(2) was obtained at a current density of 0.13 mA/cm(2). Ternary nanocomposite thin film supercapacitor electrodes showed good capacity retention (76%), limited by the PANI stability, after 2000 cycles. (C) 2015 Elsevier B.V. All rights reserved.