Effect of prolonged electrode potential cycling on the conduction properties of poly(o-aminophenol) film electrodes

The aim of this work was to study the effect of prolonged potentiodynamic cycling (PPC) on the conducting properties of poly(oaminophenol (POAP) film electrodes. PPC reduces strongly the electron transport rate at POAP films. This effect is called herein deactivation. Cyclic Voltammetry (CV), Rotat...

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Autor principal: Tucceri, Ismael Ricardo
Formato: Articulo
Lenguaje:Inglés
Publicado: 2014
Materias:
Ciencias Exactas
Química
Poly(o-aminophenol) film electrodes
Prolonged potential cycling
Deactivation
Charge transport parameters
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/99943
https://ri.conicet.gov.ar/11336/5088
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-99943
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Exactas
Química
Poly(o-aminophenol) film electrodes
Prolonged potential cycling
Deactivation
Charge transport parameters
spellingShingle Ciencias Exactas
Química
Poly(o-aminophenol) film electrodes
Prolonged potential cycling
Deactivation
Charge transport parameters
Tucceri, Ismael Ricardo
Effect of prolonged electrode potential cycling on the conduction properties of poly(o-aminophenol) film electrodes
topic_facet Ciencias Exactas
Química
Poly(o-aminophenol) film electrodes
Prolonged potential cycling
Deactivation
Charge transport parameters
description The aim of this work was to study the effect of prolonged potentiodynamic cycling (PPC) on the conducting properties of poly(oaminophenol (POAP) film electrodes. PPC reduces strongly the electron transport rate at POAP films. This effect is called herein deactivation. Cyclic Voltammetry (CV), Rotating Disc Electrode Voltammetry (RDEV) and Electrochemical Impedance Spectroscopy (EIS) were employed in this study. The attenuation of the voltammetric response of the polymer with the increase in the number of oxidation-reduction cycles allowed one to define a degree of deactivation. RDEV and EIS were employed to obtain the dependence of some charge-transport parameters on the degree of deactivation of the polymer. RDEV data were interpreted in terms of the electron hopping model. Impedance spectra were analysed on the basis of a model which considers a protonation reaction coupled with a self-exchange process between oxidized and reduced sites. POAP films maintain their conducting properties almost unaltered for about 500 potential cycles at a scan rate of 0.010 Vs<sup>-1</sup>. However, a loss of conductivity was observed as the number of potential cycles was extended beyond 500.
format Articulo
Articulo
author Tucceri, Ismael Ricardo
author_facet Tucceri, Ismael Ricardo
author_sort Tucceri, Ismael Ricardo
title Effect of prolonged electrode potential cycling on the conduction properties of poly(o-aminophenol) film electrodes
title_short Effect of prolonged electrode potential cycling on the conduction properties of poly(o-aminophenol) film electrodes
title_full Effect of prolonged electrode potential cycling on the conduction properties of poly(o-aminophenol) film electrodes
title_fullStr Effect of prolonged electrode potential cycling on the conduction properties of poly(o-aminophenol) film electrodes
title_full_unstemmed Effect of prolonged electrode potential cycling on the conduction properties of poly(o-aminophenol) film electrodes
title_sort effect of prolonged electrode potential cycling on the conduction properties of poly(o-aminophenol) film electrodes
publishDate 2014
url http://sedici.unlp.edu.ar/handle/10915/99943
https://ri.conicet.gov.ar/11336/5088
work_keys_str_mv AT tucceriismaelricardo effectofprolongedelectrodepotentialcyclingontheconductionpropertiesofpolyoaminophenolfilmelectrodes
bdutipo_str Repositorios
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