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.
Bibliographical noteFunding Information:
This work was supported in part by the Korea Science and Engineering Foundation (KOSEF) through the Advanced Materials Research Center for Better Environment (AMAREN) at Hanbat National University.
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