Pt- and Ru-doped SnO2-Sb anodes with high stability in alkaline medium
- Autores
- Berenguer, Raúl; Sieben, Juan Manuel; Quijada, César; Morallón, Emilia
- Año de publicación
- 2014
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- Different Pt- and Ru-doped Ti/SnO2-Sb electrodes were synthesized by thermal decomposition. The effect of the gradual substitution of Sb by Ru in the nominal composition on the physicochemical and electrochemical properties were evaluated. The electrochemical stability of the electrodes was estimated from accelerated tests at 0.5 A cm-2 in 1 M NaOH. Both as-synthesized and deactivated electrodes were thoroughly characterized by scanning electron microscopy (SEM), energy-dispersive X-ray microanalysis (EDX), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS) and X-ray diffraction analysis (XRD). The incorporation of a small amount (about 3 at. %) of both Pt and Ru into the SnO2-Sb electrodes produced a 400-times increase in their service life in alkaline medium, with no remarkable change in the electrocatalysis of the oxygen evolution reaction (OER). It is concluded that the deactivation of the electrodes is promoted by alkaline dissolution of metal species and coating detachment at high potentials. The introduction of Pt has a coating compacting effect, and Ru(IV), at low amounts until 9.75 at. %, replaces the Sn(IV) cations in the rutile-like SnO2 structure to form a solid solution that strongly increases the stability of the electrodes. The observed Ru segregation and decreased stability for larger Ru contents (x > 9.75 at. %), together with the selective dissolution of Ru after deactivation, suggest that the formation of a homogeneous (RuδSn1-δ)O2 single-phase is crucial for the stabilization of these electrodes.
Fil: Berenguer, Raúl. Universidad de Málaga; España
Fil: Sieben, Juan Manuel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca; Argentina. Universidad Nacional del Sur. Departamento de Ingeniería Química. Instituto de Ingeniería Electroquímica y Corrosión; Argentina
Fil: Quijada, César. Universidad Politécnica de Valencia; España
Fil: Morallón, Emilia. Universidad de Alicante; España - Materia
-
Alkaline Solutions
Doped Tin Dioxide Electrodes
Dsa Electrodes
Electrochemical Stability
Ruthenium Oxide - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
- Repositorio
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/78953
Ver los metadatos del registro completo
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oai:ri.conicet.gov.ar:11336/78953 |
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Pt- and Ru-doped SnO2-Sb anodes with high stability in alkaline mediumBerenguer, RaúlSieben, Juan ManuelQuijada, CésarMorallón, EmiliaAlkaline SolutionsDoped Tin Dioxide ElectrodesDsa ElectrodesElectrochemical StabilityRuthenium Oxidehttps://purl.org/becyt/ford/1.4https://purl.org/becyt/ford/1Different Pt- and Ru-doped Ti/SnO2-Sb electrodes were synthesized by thermal decomposition. The effect of the gradual substitution of Sb by Ru in the nominal composition on the physicochemical and electrochemical properties were evaluated. The electrochemical stability of the electrodes was estimated from accelerated tests at 0.5 A cm-2 in 1 M NaOH. Both as-synthesized and deactivated electrodes were thoroughly characterized by scanning electron microscopy (SEM), energy-dispersive X-ray microanalysis (EDX), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS) and X-ray diffraction analysis (XRD). The incorporation of a small amount (about 3 at. %) of both Pt and Ru into the SnO2-Sb electrodes produced a 400-times increase in their service life in alkaline medium, with no remarkable change in the electrocatalysis of the oxygen evolution reaction (OER). It is concluded that the deactivation of the electrodes is promoted by alkaline dissolution of metal species and coating detachment at high potentials. The introduction of Pt has a coating compacting effect, and Ru(IV), at low amounts until 9.75 at. %, replaces the Sn(IV) cations in the rutile-like SnO2 structure to form a solid solution that strongly increases the stability of the electrodes. The observed Ru segregation and decreased stability for larger Ru contents (x > 9.75 at. %), together with the selective dissolution of Ru after deactivation, suggest that the formation of a homogeneous (RuδSn1-δ)O2 single-phase is crucial for the stabilization of these electrodes.Fil: Berenguer, Raúl. Universidad de Málaga; EspañaFil: Sieben, Juan Manuel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca; Argentina. Universidad Nacional del Sur. Departamento de Ingeniería Química. Instituto de Ingeniería Electroquímica y Corrosión; ArgentinaFil: Quijada, César. Universidad Politécnica de Valencia; EspañaFil: Morallón, Emilia. Universidad de Alicante; EspañaAmerican Chemical Society2014-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/78953Berenguer, Raúl; Sieben, Juan Manuel; Quijada, César; Morallón, Emilia; Pt- and Ru-doped SnO2-Sb anodes with high stability in alkaline medium; American Chemical Society; ACS Applied Materials & Interfaces; 6; 24; 12-2014; 22778-227891944-8244CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1021/am506958kinfo:eu-repo/semantics/altIdentifier/url/https://pubs.acs.org/doi/10.1021/am506958kinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:31:00Zoai:ri.conicet.gov.ar:11336/78953instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 10:31:00.855CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
Pt- and Ru-doped SnO2-Sb anodes with high stability in alkaline medium |
title |
Pt- and Ru-doped SnO2-Sb anodes with high stability in alkaline medium |
spellingShingle |
Pt- and Ru-doped SnO2-Sb anodes with high stability in alkaline medium Berenguer, Raúl Alkaline Solutions Doped Tin Dioxide Electrodes Dsa Electrodes Electrochemical Stability Ruthenium Oxide |
title_short |
Pt- and Ru-doped SnO2-Sb anodes with high stability in alkaline medium |
title_full |
Pt- and Ru-doped SnO2-Sb anodes with high stability in alkaline medium |
title_fullStr |
Pt- and Ru-doped SnO2-Sb anodes with high stability in alkaline medium |
title_full_unstemmed |
Pt- and Ru-doped SnO2-Sb anodes with high stability in alkaline medium |
title_sort |
Pt- and Ru-doped SnO2-Sb anodes with high stability in alkaline medium |
dc.creator.none.fl_str_mv |
Berenguer, Raúl Sieben, Juan Manuel Quijada, César Morallón, Emilia |
author |
Berenguer, Raúl |
author_facet |
Berenguer, Raúl Sieben, Juan Manuel Quijada, César Morallón, Emilia |
author_role |
author |
author2 |
Sieben, Juan Manuel Quijada, César Morallón, Emilia |
author2_role |
author author author |
dc.subject.none.fl_str_mv |
Alkaline Solutions Doped Tin Dioxide Electrodes Dsa Electrodes Electrochemical Stability Ruthenium Oxide |
topic |
Alkaline Solutions Doped Tin Dioxide Electrodes Dsa Electrodes Electrochemical Stability Ruthenium Oxide |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.4 https://purl.org/becyt/ford/1 |
dc.description.none.fl_txt_mv |
Different Pt- and Ru-doped Ti/SnO2-Sb electrodes were synthesized by thermal decomposition. The effect of the gradual substitution of Sb by Ru in the nominal composition on the physicochemical and electrochemical properties were evaluated. The electrochemical stability of the electrodes was estimated from accelerated tests at 0.5 A cm-2 in 1 M NaOH. Both as-synthesized and deactivated electrodes were thoroughly characterized by scanning electron microscopy (SEM), energy-dispersive X-ray microanalysis (EDX), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS) and X-ray diffraction analysis (XRD). The incorporation of a small amount (about 3 at. %) of both Pt and Ru into the SnO2-Sb electrodes produced a 400-times increase in their service life in alkaline medium, with no remarkable change in the electrocatalysis of the oxygen evolution reaction (OER). It is concluded that the deactivation of the electrodes is promoted by alkaline dissolution of metal species and coating detachment at high potentials. The introduction of Pt has a coating compacting effect, and Ru(IV), at low amounts until 9.75 at. %, replaces the Sn(IV) cations in the rutile-like SnO2 structure to form a solid solution that strongly increases the stability of the electrodes. The observed Ru segregation and decreased stability for larger Ru contents (x > 9.75 at. %), together with the selective dissolution of Ru after deactivation, suggest that the formation of a homogeneous (RuδSn1-δ)O2 single-phase is crucial for the stabilization of these electrodes. Fil: Berenguer, Raúl. Universidad de Málaga; España Fil: Sieben, Juan Manuel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca; Argentina. Universidad Nacional del Sur. Departamento de Ingeniería Química. Instituto de Ingeniería Electroquímica y Corrosión; Argentina Fil: Quijada, César. Universidad Politécnica de Valencia; España Fil: Morallón, Emilia. Universidad de Alicante; España |
description |
Different Pt- and Ru-doped Ti/SnO2-Sb electrodes were synthesized by thermal decomposition. The effect of the gradual substitution of Sb by Ru in the nominal composition on the physicochemical and electrochemical properties were evaluated. The electrochemical stability of the electrodes was estimated from accelerated tests at 0.5 A cm-2 in 1 M NaOH. Both as-synthesized and deactivated electrodes were thoroughly characterized by scanning electron microscopy (SEM), energy-dispersive X-ray microanalysis (EDX), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS) and X-ray diffraction analysis (XRD). The incorporation of a small amount (about 3 at. %) of both Pt and Ru into the SnO2-Sb electrodes produced a 400-times increase in their service life in alkaline medium, with no remarkable change in the electrocatalysis of the oxygen evolution reaction (OER). It is concluded that the deactivation of the electrodes is promoted by alkaline dissolution of metal species and coating detachment at high potentials. The introduction of Pt has a coating compacting effect, and Ru(IV), at low amounts until 9.75 at. %, replaces the Sn(IV) cations in the rutile-like SnO2 structure to form a solid solution that strongly increases the stability of the electrodes. The observed Ru segregation and decreased stability for larger Ru contents (x > 9.75 at. %), together with the selective dissolution of Ru after deactivation, suggest that the formation of a homogeneous (RuδSn1-δ)O2 single-phase is crucial for the stabilization of these electrodes. |
publishDate |
2014 |
dc.date.none.fl_str_mv |
2014-12 |
dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
format |
article |
status_str |
publishedVersion |
dc.identifier.none.fl_str_mv |
http://hdl.handle.net/11336/78953 Berenguer, Raúl; Sieben, Juan Manuel; Quijada, César; Morallón, Emilia; Pt- and Ru-doped SnO2-Sb anodes with high stability in alkaline medium; American Chemical Society; ACS Applied Materials & Interfaces; 6; 24; 12-2014; 22778-22789 1944-8244 CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/78953 |
identifier_str_mv |
Berenguer, Raúl; Sieben, Juan Manuel; Quijada, César; Morallón, Emilia; Pt- and Ru-doped SnO2-Sb anodes with high stability in alkaline medium; American Chemical Society; ACS Applied Materials & Interfaces; 6; 24; 12-2014; 22778-22789 1944-8244 CONICET Digital CONICET |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/doi/10.1021/am506958k info:eu-repo/semantics/altIdentifier/url/https://pubs.acs.org/doi/10.1021/am506958k |
dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
eu_rights_str_mv |
openAccess |
rights_invalid_str_mv |
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
dc.format.none.fl_str_mv |
application/pdf application/pdf |
dc.publisher.none.fl_str_mv |
American Chemical Society |
publisher.none.fl_str_mv |
American Chemical Society |
dc.source.none.fl_str_mv |
reponame:CONICET Digital (CONICET) instname:Consejo Nacional de Investigaciones Científicas y Técnicas |
reponame_str |
CONICET Digital (CONICET) |
collection |
CONICET Digital (CONICET) |
instname_str |
Consejo Nacional de Investigaciones Científicas y Técnicas |
repository.name.fl_str_mv |
CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas |
repository.mail.fl_str_mv |
dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar |
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1844614319258468352 |
score |
13.070432 |