Vertically aligned carbon nanotube - Polyaniline nanocomposite supercapacitor electrodes

AYDINLI A., YÜKSEL R., ÜNALAN H. E.

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, vol.43, no.40, pp.18617-18625, 2018 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 43 Issue: 40
  • Publication Date: 2018
  • Doi Number: 10.1016/j.ijhydene.2018.05.126
  • Journal Name: INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.18617-18625
  • Keywords: Supercapacitors, Carbon nanotubes, Polyaniline, Nanocomposite, Chemical vapor deposition, Electrodeposition, HIGH-PERFORMANCE SUPERCAPACITORS, FUEL-CELL, ELECTROCHEMICAL SUPERCAPACITORS, FLEXIBLE ELECTRODES, ENERGY-STORAGE, ALUMINUM, GROWTH, ARRAYS, CAPACITANCE, CATALYST
  • Middle East Technical University Affiliated: Yes

Abstract

We develop a fast and cost effective method for the fabrication of a nanocomposite supercapacitor electrode. In this study aluminum foils were decorated with vertically aligned carbon nanotubes (VACNT) via chemical vapor deposition (CVD) method, which was followed by the electrodeposition of polyaniline (PANI) layer on top of the VACNTs. Electrochemical behavior of the fabricated nanocomposite electrodes were evaluated through cyclic voltammetry, galvanostatic charge discharge cycles and electrochemical impedance spectroscopy method. Fabricated VACNT/PANI nanocomposite electrodes through 15 electrodeposition cycles showed significant electrochemical performance. The specific capacity of these electrodes was calculated as 16.17 mF/cm(2) at a current density of 0.25 mA/cm(2). (C) 2018 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.