Ionic conductivity of nanocrystalline yttria-stabilized zirconia: grain boundary and size effects

We report on the effect of grain size on the ionic conductivity of yttria-stabilized zirconia samples synthesized by ball milling. Complex impedance measurements, as a function of temperature and frequency are performed on 10 mol % yttria-stabilized zirconia nanocrystalline samples with grain sizes...

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Autores: Durá, O. J., López de la Torre, M. A., Vázquez, L., Chaboy, J., Boada, R., Rivera Calzada, Alberto Carlos, Santamaría Sánchez-Barriga, Jacobo, León Yebra, Carlos
Formato: artículo
Fecha de publicación:2010
País:España
Recursos:Universidad Complutense de Madrid (UCM)
Repositorio:Docta Complutense
Idioma:inglés
OAI Identifier:oai:docta.ucm.es:20.500.14352/44574
Acesso em linha:https://hdl.handle.net/20.500.14352/44574
Access Level:acceso abierto
Palavra-chave:537
Oxide fuel-cells
X-ray-absorption
Electrical-conductivity
Defect chemistry
Solid-solutions
Constant loss
Thin-films
Conductors
Electrolytes
Transport.
Electricidad
Electrónica (Física)
2202.03 Electricidad
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oai_identifier_str oai:docta.ucm.es:20.500.14352/44574
network_acronym_str ES
network_name_str España
repository_id_str
spelling Ionic conductivity of nanocrystalline yttria-stabilized zirconia: grain boundary and size effectsDurá, O. J.López de la Torre, M. A.Vázquez, L.Chaboy, J.Boada, R.Rivera Calzada, Alberto CarlosSantamaría Sánchez-Barriga, JacoboLeón Yebra, Carlos537Oxide fuel-cellsX-ray-absorptionElectrical-conductivityDefect chemistrySolid-solutionsConstant lossThin-filmsConductorsElectrolytesTransport.ElectricidadElectrónica (Física)2202.03 ElectricidadWe report on the effect of grain size on the ionic conductivity of yttria-stabilized zirconia samples synthesized by ball milling. Complex impedance measurements, as a function of temperature and frequency are performed on 10 mol % yttria-stabilized zirconia nanocrystalline samples with grain sizes ranging from 900 to 17 nm. Bulk ionic conductivity decreases dramatically for grain sizes below 100 nm, although its activation energy is essentially independent of grain size. The results are interpreted in terms of a space-charge layer resulting from segregation of mobile oxygen vacancies to the grain-boundary core. The thickness of this space-charge layer formed at the grain boundaries is on the order of 1 nm for large micron-sized grains but extends up to 7 nm when decreasing the grain size down to 17 nm. This gives rise to oxygen vacancies depletion over a large volume fraction of the grain and consequently to a significant decrease in oxide-ion conductivity.American Physical SocietyUniversidad Complutense de Madrid20102010-05-0120102010-05-01journal articlehttp://purl.org/coar/resource_type/c_6501info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/20.500.14352/44574reponame:Docta Complutenseinstname:Universidad Complutense de Madrid (UCM)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2info:eu-repo/semantics/openAccessoai:docta.ucm.es:20.500.14352/445742026-06-02T12:44:21Z
dc.title.none.fl_str_mv Ionic conductivity of nanocrystalline yttria-stabilized zirconia: grain boundary and size effects
title Ionic conductivity of nanocrystalline yttria-stabilized zirconia: grain boundary and size effects
spellingShingle Ionic conductivity of nanocrystalline yttria-stabilized zirconia: grain boundary and size effects
Durá, O. J.
537
Oxide fuel-cells
X-ray-absorption
Electrical-conductivity
Defect chemistry
Solid-solutions
Constant loss
Thin-films
Conductors
Electrolytes
Transport.
Electricidad
Electrónica (Física)
2202.03 Electricidad
title_short Ionic conductivity of nanocrystalline yttria-stabilized zirconia: grain boundary and size effects
title_full Ionic conductivity of nanocrystalline yttria-stabilized zirconia: grain boundary and size effects
title_fullStr Ionic conductivity of nanocrystalline yttria-stabilized zirconia: grain boundary and size effects
title_full_unstemmed Ionic conductivity of nanocrystalline yttria-stabilized zirconia: grain boundary and size effects
title_sort Ionic conductivity of nanocrystalline yttria-stabilized zirconia: grain boundary and size effects
dc.creator.none.fl_str_mv Durá, O. J.
López de la Torre, M. A.
Vázquez, L.
Chaboy, J.
Boada, R.
Rivera Calzada, Alberto Carlos
Santamaría Sánchez-Barriga, Jacobo
León Yebra, Carlos
author Durá, O. J.
author_facet Durá, O. J.
López de la Torre, M. A.
Vázquez, L.
Chaboy, J.
Boada, R.
Rivera Calzada, Alberto Carlos
Santamaría Sánchez-Barriga, Jacobo
León Yebra, Carlos
author_role author
author2 López de la Torre, M. A.
Vázquez, L.
Chaboy, J.
Boada, R.
Rivera Calzada, Alberto Carlos
Santamaría Sánchez-Barriga, Jacobo
León Yebra, Carlos
author2_role author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv Universidad Complutense de Madrid
dc.subject.none.fl_str_mv 537
Oxide fuel-cells
X-ray-absorption
Electrical-conductivity
Defect chemistry
Solid-solutions
Constant loss
Thin-films
Conductors
Electrolytes
Transport.
Electricidad
Electrónica (Física)
2202.03 Electricidad
topic 537
Oxide fuel-cells
X-ray-absorption
Electrical-conductivity
Defect chemistry
Solid-solutions
Constant loss
Thin-films
Conductors
Electrolytes
Transport.
Electricidad
Electrónica (Física)
2202.03 Electricidad
description We report on the effect of grain size on the ionic conductivity of yttria-stabilized zirconia samples synthesized by ball milling. Complex impedance measurements, as a function of temperature and frequency are performed on 10 mol % yttria-stabilized zirconia nanocrystalline samples with grain sizes ranging from 900 to 17 nm. Bulk ionic conductivity decreases dramatically for grain sizes below 100 nm, although its activation energy is essentially independent of grain size. The results are interpreted in terms of a space-charge layer resulting from segregation of mobile oxygen vacancies to the grain-boundary core. The thickness of this space-charge layer formed at the grain boundaries is on the order of 1 nm for large micron-sized grains but extends up to 7 nm when decreasing the grain size down to 17 nm. This gives rise to oxygen vacancies depletion over a large volume fraction of the grain and consequently to a significant decrease in oxide-ion conductivity.
publishDate 2010
dc.date.none.fl_str_mv 2010
2010-05-01
2010
2010-05-01
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/20.500.14352/44574
url https://hdl.handle.net/20.500.14352/44574
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv American Physical Society
publisher.none.fl_str_mv American Physical Society
dc.source.none.fl_str_mv reponame:Docta Complutense
instname:Universidad Complutense de Madrid (UCM)
instname_str Universidad Complutense de Madrid (UCM)
reponame_str Docta Complutense
collection Docta Complutense
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,300719

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