The Electrochemical Behaviour of PEDOT Film Electrosynthesized in Presence of Some Dopants

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).

Soft Conducting Elastomer for Peripheral Nerve Interface

“…Figure b shows a representative CV graph. The shape of the CV is comparable to that reported in the literature measured using PEDOT/CNT coated metal electrodes with very broad redox peaks . The mean values of the total and catholic charge storage capacity are reported in Table 1 .…”

Electrochemical Systems for Renewable Energy Conversion from Salinity and Proton Gradients

“…PEDOT conductivity remains optimum due to continuous, uninterrupted π-conjugation. 75,76 3,4-Ethylenedioxythiophene (EDOT) is the monomer unit of PEDOT. EDOT polymerization is one of the most common methods to obtain PEDOT films.…”

“…Some aspects, like solvent, supporting electrolyte, electrode, polymerization potential, and applied electropolymerization method might have important effects on the film consisting of electropolymerized PEDOT; nevertheless, all these experimental conditions can be perfectly controlled. [75][76][77] PEDOT stands out among conducting polymers because it has high conductivity, approximately 500 S cm -1 ; it also presents good environmental stability, provides broad potential window, has a fast charge/ discharge process, and charge storage properties, which together increase the interest in supercapacitor materials. 78 During the charge/discharge process, the PEDOT charge compensation mechanism occurs predominantly with the help of anions (ClO 4 -, NO 3 -, SO 4 2-, and BF 4 -).…”

Electrochemical synthesis and characterizations of new nanocomposite electrodeposition on Co67Cr29W4 alloy substrate

“…Conducting polymers are as well intriguing molecular structures due their capability to considerably modify properties when activated by an electric signal. [1][2][3][4][5][6][7][8][9] These new materials give interesting promises for a large domain of new implements as membranes, solar cells, batteries, sensor, capacitors, nanoelectronics and corrosion protection coatings. Electroactive polymers with different oxidation states keep drawing the interest of numerous researchers due to their diverse electrochemical properties, which make them responsible for use in a large diversity of practices.…”

“…Electroactive polymers with different oxidation states keep drawing the interest of numerous researchers due to their diverse electrochemical properties, which make them responsible for use in a large diversity of practices. [6][7][8][9][10][11][12][13] The electrodeposition of conducting polymers over active surface of metals and alloys has been a subject of numerous researches for a wide field of new materials. The polymeric composites formed of conducting polymers have a number of special properties as enhanced chemical stability, thermostability and high electroactivity.…”