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Poly (acrylic acid) - mediated soft template synthesis of Poly (3, 4-ethylenedioxythiophene)-based conducting polymer nanostructures for supercapacitor applications

Published online by Cambridge University Press:  28 March 2013

Punya A. Basnayaka ,
Manoj K. Ram ,
Lee Stefanakos  and
Ashok Kumar
Punya A. Basnayaka
Affiliation:
Department of Mechanical Engineering, University of South Florida, 4202 E Fowler Avenue, ENB 118, Tampa, FL, 33620 Clean Energy Research Center, University of South Florida, 4202 E Fowler Avenue, ENB 118, Tampa, FL, 33620
Manoj K. Ram
Affiliation:
Clean Energy Research Center, University of South Florida, 4202 E Fowler Avenue, ENB 118, Tampa, FL, 33620 Nanotechnology Research and Education Center, University of South Florida, 4202 E Fowler Avenue, ENB 118, Tampa, FL, 33620
Lee Stefanakos
Affiliation:
Clean Energy Research Center, University of South Florida, 4202 E Fowler Avenue, ENB 118, Tampa, FL, 33620 Department of Electrical Engineering, University of South Florida, 4202 E Fowler Avenue, ENB 118, Tampa, FL, 33620
Ashok Kumar
Affiliation:
Department of Mechanical Engineering, University of South Florida, 4202 E Fowler Avenue, ENB 118, Tampa, FL, 33620 Clean Energy Research Center, University of South Florida, 4202 E Fowler Avenue, ENB 118, Tampa, FL, 33620
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Abstract

In the present study, poly (3, 4-ethylenedioxythiophene) (PEDOT) nanostructures were obtained by oxidative polymerization of monomer ‘3, 4-ethylenedioxythiophene’ in the presence of poly (acrylic acid) (PAA) in FeCl3 as an oxidizing agent. The PEDOT nanostructures were characterized using the Fourier Transform Infrared Spectroscopy (FTIR), Scanning Electron Microscopy (SEM) and Transmission Electron Microscopy (TEM) techniques respectively. The morphology of PEDOT nanostructures revealed flowerlike-shape agglomerates with an increase in the concentrations of PAA. The SEM, TEM and FTIR studies revealed that the presence of PAA could only induce a change in morphology during polymerization, but could not influence the molecular structure of the PEDOT nanostructures. The synthesized PEDOT nanostructures were used as electrode material for supercapacitor. The electrochemical capacitive properties of the PEDOT nanostructures were investigated with the Cyclic Voltammetry (CV), galvanostatic charge–discharge and electrochemical impedance spectroscopy (EIS) techniques in the three-electrode cell system. The capacitance of the PEDOT electrode was measured in 0.1M LiClO4 and 2M H2SO4 electrolytes. The highest specific capacitance value of 215F/g for a PEDOT nanostructured electrode was calculated in 1 M H2SO4 electrolyte.

Keywords

electrochemical synthesisenergy storagepolymer
Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1497: Symposium K – Hierarchically Structured Materials for Energy Conversion and Storage , 2013 , mrsf12-1497-k06-24
Copyright
Copyright © Materials Research Society 2013

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