Analysis of hysteresis phenomenon as observed from voltammetric data of conducting polymers: part I

Detalhes bibliográficos
Autor(a) principal: Matencio,Tulio
Data de Publicação: 2003
Outros Autores: Pernaut,Jean Michel, Vieil,Eric
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Journal of the Brazilian Chemical Society (Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532003000100015
Resumo: The hysteresis phenomenon inherent to redox processes of Electronic Conducting Polymers (ECP) has been studied. Hysteresis was divided into two classes: i) dynamic hysteresis, containing a kinetic and an ohmic component and ii) stationary or thermodynamic hysteresis. A mathematical analysis was performed on the dynamic hysteresis observed in cyclic voltammograms of two polymers: polyaniline (PANI) and poly(3-methylthiophene) (P3MT). It has been shown that in the case of P3MT, the hysteresis is mainly kinetic due to the rate of one of the steps of the redox process. However, an ohmic component related to the existence of an electrical impedance in series with the electrochemical system is also present. As for PANI, hysteresis is current independent, which is characteristic of thermodynamic hysteresis.
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spelling Analysis of hysteresis phenomenon as observed from voltammetric data of conducting polymers: part Iconducting polymershysteresiscyclic voltammetryThe hysteresis phenomenon inherent to redox processes of Electronic Conducting Polymers (ECP) has been studied. Hysteresis was divided into two classes: i) dynamic hysteresis, containing a kinetic and an ohmic component and ii) stationary or thermodynamic hysteresis. A mathematical analysis was performed on the dynamic hysteresis observed in cyclic voltammograms of two polymers: polyaniline (PANI) and poly(3-methylthiophene) (P3MT). It has been shown that in the case of P3MT, the hysteresis is mainly kinetic due to the rate of one of the steps of the redox process. However, an ohmic component related to the existence of an electrical impedance in series with the electrochemical system is also present. As for PANI, hysteresis is current independent, which is characteristic of thermodynamic hysteresis.Sociedade Brasileira de Química2003-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532003000100015Journal of the Brazilian Chemical Society v.14 n.1 2003reponame:Journal of the Brazilian Chemical Society (Online)instname:Sociedade Brasileira de Química (SBQ)instacron:SBQ10.1590/S0103-50532003000100015info:eu-repo/semantics/openAccessMatencio,TulioPernaut,Jean MichelVieil,Ericeng2003-04-07T00:00:00Zoai:scielo:S0103-50532003000100015Revistahttp://jbcs.sbq.org.brONGhttps://old.scielo.br/oai/scielo-oai.php||office@jbcs.sbq.org.br1678-47900103-5053opendoar:2003-04-07T00:00Journal of the Brazilian Chemical Society (Online) - Sociedade Brasileira de Química (SBQ)false
dc.title.none.fl_str_mv Analysis of hysteresis phenomenon as observed from voltammetric data of conducting polymers: part I
title Analysis of hysteresis phenomenon as observed from voltammetric data of conducting polymers: part I
spellingShingle Analysis of hysteresis phenomenon as observed from voltammetric data of conducting polymers: part I
Matencio,Tulio
conducting polymers
hysteresis
cyclic voltammetry
title_short Analysis of hysteresis phenomenon as observed from voltammetric data of conducting polymers: part I
title_full Analysis of hysteresis phenomenon as observed from voltammetric data of conducting polymers: part I
title_fullStr Analysis of hysteresis phenomenon as observed from voltammetric data of conducting polymers: part I
title_full_unstemmed Analysis of hysteresis phenomenon as observed from voltammetric data of conducting polymers: part I
title_sort Analysis of hysteresis phenomenon as observed from voltammetric data of conducting polymers: part I
author Matencio,Tulio
author_facet Matencio,Tulio
Pernaut,Jean Michel
Vieil,Eric
author_role author
author2 Pernaut,Jean Michel
Vieil,Eric
author2_role author
author
dc.contributor.author.fl_str_mv Matencio,Tulio
Pernaut,Jean Michel
Vieil,Eric
dc.subject.por.fl_str_mv conducting polymers
hysteresis
cyclic voltammetry
topic conducting polymers
hysteresis
cyclic voltammetry
description The hysteresis phenomenon inherent to redox processes of Electronic Conducting Polymers (ECP) has been studied. Hysteresis was divided into two classes: i) dynamic hysteresis, containing a kinetic and an ohmic component and ii) stationary or thermodynamic hysteresis. A mathematical analysis was performed on the dynamic hysteresis observed in cyclic voltammograms of two polymers: polyaniline (PANI) and poly(3-methylthiophene) (P3MT). It has been shown that in the case of P3MT, the hysteresis is mainly kinetic due to the rate of one of the steps of the redox process. However, an ohmic component related to the existence of an electrical impedance in series with the electrochemical system is also present. As for PANI, hysteresis is current independent, which is characteristic of thermodynamic hysteresis.
publishDate 2003
dc.date.none.fl_str_mv 2003-01-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532003000100015
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532003000100015
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S0103-50532003000100015
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Sociedade Brasileira de Química
publisher.none.fl_str_mv Sociedade Brasileira de Química
dc.source.none.fl_str_mv Journal of the Brazilian Chemical Society v.14 n.1 2003
reponame:Journal of the Brazilian Chemical Society (Online)
instname:Sociedade Brasileira de Química (SBQ)
instacron:SBQ
instname_str Sociedade Brasileira de Química (SBQ)
instacron_str SBQ
institution SBQ
reponame_str Journal of the Brazilian Chemical Society (Online)
collection Journal of the Brazilian Chemical Society (Online)
repository.name.fl_str_mv Journal of the Brazilian Chemical Society (Online) - Sociedade Brasileira de Química (SBQ)
repository.mail.fl_str_mv ||office@jbcs.sbq.org.br
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