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Chemical Papers

, Volume 68, Issue 4, pp 504–515 | Cite as

Electrochemical storage properties of polyaniline-, poly(N-methylaniline)-, and poly(N-ethylaniline)-coated pencil graphite electrodes

  • Andac Arslan
  • Evrim HurEmail author
Original Paper

Abstract

Three types of conducting polymers, polyaniline (PANI), poly(N-methylaniline) (PNMA), poly(N-ethylaniline) (PNEA) were electrochemically deposited on pencil graphite electrode (PGE) surfaces characterized as electrode active materials for supercapacitor applications. The obtained films were electrochemically characterized using different electrochemical methods. Redox parameters, electro-active characteristics, and electrostability of the polymer films were investigated via cyclic voltammetry (CV). Doping types of the polymer films were determined by the Mott-Schottky method. Electrochemical capacitance properties of the polymer film coating PGE (PGE/PANI, PGE/PNMA, and PGE/PNEA) were investigated by the CV and potentiostatic electrochemical impedance spectroscopy (EIS) methods in a 0.1 M H2SO4 aqueous solution. Thus, capacitance values of the electrodes were calculated. Results show that PGE/PANI, PGE/PNMA, and PGE/PNEA exhibit maximum specific capacitances of 131.78 F g−1 (≈ 436.50 mF cm−2), 38.00 F g−1 (≈ 130.70 mF cm−2), and 16.50 F g−1 (≈ 57.83 mF cm−2), respectively. Moreover, charge-discharge capacities of the electrodes are reported and the specific power (SP) and specific energy (SE) values of the electrodes as supercapacitor materials were calculated using repeating chronopotentiometry.

Keywords

conducting polymer polyaniline electropolymerization energy storage supercapacitor 

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Copyright information

© Institute of Chemistry, Slovak Academy of Sciences 2013

Authors and Affiliations

  1. 1.Department of Chemistry, Faculty of Arts and ScienceEskişehir Osmangazi UniversityEskişehirTurkey

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