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Activated carbon‐polyethylenedioxythiophene composite electrodes for symmetrical supercapacitors
Author(s) -
Selvakumar M.,
Krishna Bhat D.
Publication year - 2007
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.27166
Subject(s) - supercapacitor , materials science , pedot:pss , electrode , cyclic voltammetry , composite number , dielectric spectroscopy , capacitance , conductive polymer , electrochemistry , horizontal scan rate , activated carbon , composite material , polymer , chemistry , organic chemistry , adsorption
A symmetrical (p/p) supercapacitor has been fabricated by making use of activated carbon (AC)‐polyethylenedioxythiophene (PEDOT)‐composite electrodes for the first time. The composite electrodes have been prepared via electrochemical deposition of β‐napthalenesulphonate doped PEDOT onto AC electrodes. The characteristics of the electrodes and the fabricated supercapacitor have been investigated using cyclic voltammetry (CV) and AC impedance spectroscopy. The electrodes show a maximum specific capacitance of 158 Fg −1 at a scan rate of 10 mV s −1 . This indicates that the in situ electro‐polymerization of ethylenedioxythiophene (EDOT) onto AC could improve the performance of carbon electrodes for use in supercapacitors. © 2007 Wiley Periodicals, Inc. J Appl Polym Sci 2008