Capacitance properties of graphite/polypyrrole composite electrode prepared by chemical polymerization of pyrrole on graphite fiber

Jong Hyeok Park, Jang Myoun Ko, O. Ok Park, Dong Wen Kim

Research output: Contribution to journalArticle

197 Citations (Scopus)

Abstract

Composite electrodes for supercapacitors are prepared via chemical polymerization of pyrrole (Py) on the surface of a porous graphite fiber matrix. The capacitance properties are investigated with cyclic voltammetry (CV), ac impedance spectroscopy and charge-discharge tests. These electrodes show a specific capacitance of about 400Fg-1 and a Coulombic efficiency of 96-99%. This indicates that the dipping method is quite suitable for the modification of carbon-based porous graphite fiber to improve the performance of electrodes which can be used in supercapacitors.

Original languageEnglish
Pages (from-to)20-25
Number of pages6
JournalJournal of Power Sources
Volume105
Issue number1
DOIs
Publication statusPublished - 2002 Mar 5

All Science Journal Classification (ASJC) codes

  • Renewable Energy, Sustainability and the Environment
  • Energy Engineering and Power Technology
  • Physical and Theoretical Chemistry
  • Electrical and Electronic Engineering

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