On the Use of the power-law model for interpreting constant-phase-element parameters
Autor(a) principal: | |
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Data de Publicação: | 2014 |
Outros Autores: | , , , , |
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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Journal of the Brazilian Chemical Society (Online) |
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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 |
_version_ |
1750318175754387456 |