On the Use of the power-law model for interpreting constant-phase-element parameters

Detalhes bibliográficos
Autor(a) principal: Orazem,Mark E.
Data de Publicação: 2014
Outros Autores: Tribollet,Bernard, Vivier,Vincent, Riemer,Douglas P., White,Erick, Bunge,Annette
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=S0103-50532014000300017
Resumo: Constant-phase elements (CPE) are often used to fit impedance data arising from a broad range of experimental systems. The power-law model has proven to be a powerful tool for interpretation of CPE parameters resulting from an axial or normal distribution of time constants. This paper addresses difficulties in applying this model associated with uncertain values for one of the model parameters. Methods are presented for bounding the value of the parameter, for calibration, and for comparative analysis in which the unknown parameter may be eliminated. The methods are illustrated by data taken from the literature for oxides on steels and for human skin.
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spelling On the Use of the power-law model for interpreting constant-phase-element parameterselectrochemistryelectro-analyticalvoltammetry/amperometry/spectrophotometry/potentiometry analysisConstant-phase elements (CPE) are often used to fit impedance data arising from a broad range of experimental systems. The power-law model has proven to be a powerful tool for interpretation of CPE parameters resulting from an axial or normal distribution of time constants. This paper addresses difficulties in applying this model associated with uncertain values for one of the model parameters. Methods are presented for bounding the value of the parameter, for calibration, and for comparative analysis in which the unknown parameter may be eliminated. The methods are illustrated by data taken from the literature for oxides on steels and for human skin.Sociedade Brasileira de Química2014-03-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532014000300017Journal of the Brazilian Chemical Society v.25 n.3 2014reponame:Journal of the Brazilian Chemical Society (Online)instname:Sociedade Brasileira de Química (SBQ)instacron:SBQ10.5935/0103-5053.20140021info:eu-repo/semantics/openAccessOrazem,Mark E.Tribollet,BernardVivier,VincentRiemer,Douglas P.White,ErickBunge,Annetteeng2014-03-19T00:00:00Zoai:scielo:S0103-50532014000300017Revistahttp://jbcs.sbq.org.brONGhttps://old.scielo.br/oai/scielo-oai.php||office@jbcs.sbq.org.br1678-47900103-5053opendoar:2014-03-19T00:00Journal of the Brazilian Chemical Society (Online) - Sociedade Brasileira de Química (SBQ)false
dc.title.none.fl_str_mv On the Use of the power-law model for interpreting constant-phase-element parameters
title On the Use of the power-law model for interpreting constant-phase-element parameters
spellingShingle On the Use of the power-law model for interpreting constant-phase-element parameters
Orazem,Mark E.
electrochemistry
electro-analytical
voltammetry/amperometry/spectrophotometry/potentiometry analysis
title_short On the Use of the power-law model for interpreting constant-phase-element parameters
title_full On the Use of the power-law model for interpreting constant-phase-element parameters
title_fullStr On the Use of the power-law model for interpreting constant-phase-element parameters
title_full_unstemmed On the Use of the power-law model for interpreting constant-phase-element parameters
title_sort On the Use of the power-law model for interpreting constant-phase-element parameters
author Orazem,Mark E.
author_facet Orazem,Mark E.
Tribollet,Bernard
Vivier,Vincent
Riemer,Douglas P.
White,Erick
Bunge,Annette
author_role author
author2 Tribollet,Bernard
Vivier,Vincent
Riemer,Douglas P.
White,Erick
Bunge,Annette
author2_role author
author
author
author
author
dc.contributor.author.fl_str_mv Orazem,Mark E.
Tribollet,Bernard
Vivier,Vincent
Riemer,Douglas P.
White,Erick
Bunge,Annette
dc.subject.por.fl_str_mv electrochemistry
electro-analytical
voltammetry/amperometry/spectrophotometry/potentiometry analysis
topic electrochemistry
electro-analytical
voltammetry/amperometry/spectrophotometry/potentiometry analysis
description Constant-phase elements (CPE) are often used to fit impedance data arising from a broad range of experimental systems. The power-law model has proven to be a powerful tool for interpretation of CPE parameters resulting from an axial or normal distribution of time constants. This paper addresses difficulties in applying this model associated with uncertain values for one of the model parameters. Methods are presented for bounding the value of the parameter, for calibration, and for comparative analysis in which the unknown parameter may be eliminated. The methods are illustrated by data taken from the literature for oxides on steels and for human skin.
publishDate 2014
dc.date.none.fl_str_mv 2014-03-01
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=S0103-50532014000300017
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532014000300017
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.5935/0103-5053.20140021
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.25 n.3 2014
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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