TITLE:
The Electrochemical Behaviour of PEDOT Film Electrosynthesized in Presence of Some Dopants
AUTHORS:
Florina Branzoi, Viorel Branzoi
KEYWORDS:
Nanocomposite Films, Carbon Nanotubes, Electropolymerization, SEM, EIS, Capacitance
JOURNAL NAME:
Open Journal of Organic Polymer Materials,
Vol.5 No.4,
September
30,
2015
ABSTRACT: Electropolymerization and characterization of poly(3,4-ethylene dioxythiophene) (PEDOT) doped
with functionalized single-walled carbon nanotubes (SWANTs) polyaminobenzene sulfonic acid
(PABS) and different dopants were studied. It was fabricated by a simple oxidative electropolymerization
method. The nanocomposite coatings have been prepared by using electrochemical
methods from aqueous solutions, such that the components were deposited onto platinum electrode
substrate. The morphology of composite films was analyzed by scanning electron microscopy
(SEM). The electrochemical and physical properties of the resulting composites were evaluated
by cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS) and Fourier transform
infrared spectroscopy (FT-IR) techniques in 0.1 M LiClO4 aqueous solutions. The value of
specific electrochemical capacitance of the composite films is considerably higher than that of the
pure polymers films. The improved properties of the electrodes were obtained by using these
composite films. The dopant substances used were sodium dodecyl sulfate (SDS) and 1,2-Dihydroxy-
benzene-3,5-disulfonic acid disodium salt hydrate (tiron).