An electrochemical impedance spectroscopy study of the cobalt electrodissolution process in carbonate-bicarbonate buffers

Detalhes bibliográficos
Autor(a) principal: Real,S.G.
Data de Publicação: 1997
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=S0103-50531997000200012
Resumo: The electrodissolution process of polycrystalline cobalt in carbonate-bicarbonate buffers covering relatively wide ranges of ionic strength, pH, and the hydrodynamic condition of the electrolyte solution, was investigated using electrochemical impedance spectroscopy (EIS). Impedance spectra were analyzed to determine the dynamic behavior of the system by the application of transfer function analysis using non-linear fitting routines according to a model which gives information about the characteristic parameters of the electrochemical process at the reaction interface. Data analysis using non-linear fitting routines showed that the impedance spectra of the cobalt electrodissolution process in carbonate-bicarbonate buffers at pH 8.9-10.5 can be modeled considering a finite-length Warburg impedance that accounts for the mass transport process taking place in the electrolyte.
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spelling An electrochemical impedance spectroscopy study of the cobalt electrodissolution process in carbonate-bicarbonate buffersfinite-length Warburg impedancecobalt dissolutioncarbonate-bicarbonate solutionsThe electrodissolution process of polycrystalline cobalt in carbonate-bicarbonate buffers covering relatively wide ranges of ionic strength, pH, and the hydrodynamic condition of the electrolyte solution, was investigated using electrochemical impedance spectroscopy (EIS). Impedance spectra were analyzed to determine the dynamic behavior of the system by the application of transfer function analysis using non-linear fitting routines according to a model which gives information about the characteristic parameters of the electrochemical process at the reaction interface. Data analysis using non-linear fitting routines showed that the impedance spectra of the cobalt electrodissolution process in carbonate-bicarbonate buffers at pH 8.9-10.5 can be modeled considering a finite-length Warburg impedance that accounts for the mass transport process taking place in the electrolyte.Sociedade Brasileira de Química1997-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50531997000200012Journal of the Brazilian Chemical Society v.8 n.2 1997reponame:Journal of the Brazilian Chemical Society (Online)instname:Sociedade Brasileira de Química (SBQ)instacron:SBQ10.1590/S0103-50531997000200012info:eu-repo/semantics/openAccessReal,S.G.eng2012-10-30T00:00:00Zoai:scielo:S0103-50531997000200012Revistahttp://jbcs.sbq.org.brONGhttps://old.scielo.br/oai/scielo-oai.php||office@jbcs.sbq.org.br1678-47900103-5053opendoar:2012-10-30T00:00Journal of the Brazilian Chemical Society (Online) - Sociedade Brasileira de Química (SBQ)false
dc.title.none.fl_str_mv An electrochemical impedance spectroscopy study of the cobalt electrodissolution process in carbonate-bicarbonate buffers
title An electrochemical impedance spectroscopy study of the cobalt electrodissolution process in carbonate-bicarbonate buffers
spellingShingle An electrochemical impedance spectroscopy study of the cobalt electrodissolution process in carbonate-bicarbonate buffers
Real,S.G.
finite-length Warburg impedance
cobalt dissolution
carbonate-bicarbonate solutions
title_short An electrochemical impedance spectroscopy study of the cobalt electrodissolution process in carbonate-bicarbonate buffers
title_full An electrochemical impedance spectroscopy study of the cobalt electrodissolution process in carbonate-bicarbonate buffers
title_fullStr An electrochemical impedance spectroscopy study of the cobalt electrodissolution process in carbonate-bicarbonate buffers
title_full_unstemmed An electrochemical impedance spectroscopy study of the cobalt electrodissolution process in carbonate-bicarbonate buffers
title_sort An electrochemical impedance spectroscopy study of the cobalt electrodissolution process in carbonate-bicarbonate buffers
author Real,S.G.
author_facet Real,S.G.
author_role author
dc.contributor.author.fl_str_mv Real,S.G.
dc.subject.por.fl_str_mv finite-length Warburg impedance
cobalt dissolution
carbonate-bicarbonate solutions
topic finite-length Warburg impedance
cobalt dissolution
carbonate-bicarbonate solutions
description The electrodissolution process of polycrystalline cobalt in carbonate-bicarbonate buffers covering relatively wide ranges of ionic strength, pH, and the hydrodynamic condition of the electrolyte solution, was investigated using electrochemical impedance spectroscopy (EIS). Impedance spectra were analyzed to determine the dynamic behavior of the system by the application of transfer function analysis using non-linear fitting routines according to a model which gives information about the characteristic parameters of the electrochemical process at the reaction interface. Data analysis using non-linear fitting routines showed that the impedance spectra of the cobalt electrodissolution process in carbonate-bicarbonate buffers at pH 8.9-10.5 can be modeled considering a finite-length Warburg impedance that accounts for the mass transport process taking place in the electrolyte.
publishDate 1997
dc.date.none.fl_str_mv 1997-01-01
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=S0103-50531997000200012
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50531997000200012
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S0103-50531997000200012
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.8 n.2 1997
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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