Innovative improvement of sintered ceramic electrolytes by salt infiltration

Detalhes bibliográficos
Autor(a) principal: Nascimento, Rubens Maribondo do
Data de Publicação: 2021
Outros Autores: Grilo, João Paulo de Freitas, Macedo, Daniel Araújo de, Marques, Fernando Manuel Bico
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFRN
Texto Completo: https://repositorio.ufrn.br/handle/123456789/45458
Resumo: 2030-12
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spelling Nascimento, Rubens Maribondo doGrilo, João Paulo de FreitasMacedo, Daniel Araújo deMarques, Fernando Manuel Bico2021-12-17T14:49:38Z2021-02-15GRILO, João P. F.; MACEDO, Daniel A.; NASCIMENTO, Rubens M.; MARQUES, Fernando M. B. Innovative improvement of sintered ceramic electrolytes by salt infiltration. Ceramics International, [S.L.], v. 47, n. 4, p. 5079-5090, fev. 2021. Disponível em: https://www.sciencedirect.com/science/article/pii/S0272884220331291?via%3Dihub. Acesso em: 31 mar. 2021. http://dx.doi.org/10.1016/j.ceramint.2020.10.086.0272-8842https://repositorio.ufrn.br/handle/123456789/4545810.1016/j.ceramint.2020.10.086ElsevierGd-doped ceriaMolten carbonatesGrain boundaryImpedance spectroscopyInnovative improvement of sintered ceramic electrolytes by salt infiltrationinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article2030-12Previously sintered (1500 °C, 4 h) dense pellets of Ce0.9Gd0.1O1.95 (GDC) were covered and heat treated with eutectic mixtures of Na2CO3 and Li2CO3 (NLC), and their electrical performance was assessed against pure GDC and chemically synthesized GDC+NLC. Microstructural analysis of NLC impregnated samples confirmed slight migration of the molten phase to the interior of the GDC pellets via grain boundaries, resulting in a significant improvement of the grain boundary conductivity, increasing with duration of heat treatment (0.5-2 h) and temperature (600 to 800 oC range). The observed total conductivity exceeded in almost 20% the corresponding values obtained for standard GDC samples. Cells tested before and after direct current polarization (0.5 V, 500 °C) showed the same electrical performance, discarding the possibility of parallel contributions of salt ions to the total conductivity. Grain boundary engineering using salt infiltration is an effective tool to improve the electrical performance of ceramic electrolytesengreponame:Repositório Institucional da UFRNinstname:Universidade Federal do Rio Grande do Norte (UFRN)instacron:UFRNinfo:eu-repo/semantics/openAccessCC-LICENSElicense_rdflicense_rdfapplication/rdf+xml; charset=utf-8811https://repositorio.ufrn.br/bitstream/123456789/45458/2/license_rdfe39d27027a6cc9cb039ad269a5db8e34MD52LICENSElicense.txtlicense.txttext/plain; charset=utf-81484https://repositorio.ufrn.br/bitstream/123456789/45458/3/license.txte9597aa2854d128fd968be5edc8a28d9MD53123456789/454582024-03-19 01:02:07.628oai:https://repositorio.ufrn.br:123456789/45458Tk9OLUVYQ0xVU0lWRSBESVNUUklCVVRJT04gTElDRU5TRQoKCkJ5IHNpZ25pbmcgYW5kIGRlbGl2ZXJpbmcgdGhpcyBsaWNlbnNlLCBNci4gKGF1dGhvciBvciBjb3B5cmlnaHQgaG9sZGVyKToKCgphKSBHcmFudHMgdGhlIFVuaXZlcnNpZGFkZSBGZWRlcmFsIFJpbyBHcmFuZGUgZG8gTm9ydGUgdGhlIG5vbi1leGNsdXNpdmUgcmlnaHQgb2YKcmVwcm9kdWNlLCBjb252ZXJ0IChhcyBkZWZpbmVkIGJlbG93KSwgY29tbXVuaWNhdGUgYW5kIC8gb3IKZGlzdHJpYnV0ZSB0aGUgZGVsaXZlcmVkIGRvY3VtZW50IChpbmNsdWRpbmcgYWJzdHJhY3QgLyBhYnN0cmFjdCkgaW4KZGlnaXRhbCBvciBwcmludGVkIGZvcm1hdCBhbmQgaW4gYW55IG1lZGl1bS4KCmIpIERlY2xhcmVzIHRoYXQgdGhlIGRvY3VtZW50IHN1Ym1pdHRlZCBpcyBpdHMgb3JpZ2luYWwgd29yaywgYW5kIHRoYXQKeW91IGhhdmUgdGhlIHJpZ2h0IHRvIGdyYW50IHRoZSByaWdodHMgY29udGFpbmVkIGluIHRoaXMgbGljZW5zZS4gRGVjbGFyZXMKdGhhdCB0aGUgZGVsaXZlcnkgb2YgdGhlIGRvY3VtZW50IGRvZXMgbm90IGluZnJpbmdlLCBhcyBmYXIgYXMgaXQgaXMKdGhlIHJpZ2h0cyBvZiBhbnkgb3RoZXIgcGVyc29uIG9yIGVudGl0eS4KCmMpIElmIHRoZSBkb2N1bWVudCBkZWxpdmVyZWQgY29udGFpbnMgbWF0ZXJpYWwgd2hpY2ggZG9lcyBub3QKcmlnaHRzLCBkZWNsYXJlcyB0aGF0IGl0IGhhcyBvYnRhaW5lZCBhdXRob3JpemF0aW9uIGZyb20gdGhlIGhvbGRlciBvZiB0aGUKY29weXJpZ2h0IHRvIGdyYW50IHRoZSBVbml2ZXJzaWRhZGUgRmVkZXJhbCBkbyBSaW8gR3JhbmRlIGRvIE5vcnRlIHRoZSByaWdodHMgcmVxdWlyZWQgYnkgdGhpcyBsaWNlbnNlLCBhbmQgdGhhdCB0aGlzIG1hdGVyaWFsIHdob3NlIHJpZ2h0cyBhcmUgb2YKdGhpcmQgcGFydGllcyBpcyBjbGVhcmx5IGlkZW50aWZpZWQgYW5kIHJlY29nbml6ZWQgaW4gdGhlIHRleHQgb3IKY29udGVudCBvZiB0aGUgZG9jdW1lbnQgZGVsaXZlcmVkLgoKSWYgdGhlIGRvY3VtZW50IHN1Ym1pdHRlZCBpcyBiYXNlZCBvbiBmdW5kZWQgb3Igc3VwcG9ydGVkIHdvcmsKYnkgYW5vdGhlciBpbnN0aXR1dGlvbiBvdGhlciB0aGFuIHRoZSBVbml2ZXJzaWRhZGUgRmVkZXJhbCBkbyBSaW8gR3JhbmRlIGRvIE5vcnRlLCBkZWNsYXJlcyB0aGF0IGl0IGhhcyBmdWxmaWxsZWQgYW55IG9ibGlnYXRpb25zIHJlcXVpcmVkIGJ5IHRoZSByZXNwZWN0aXZlIGFncmVlbWVudCBvciBhZ3JlZW1lbnQuCgpUaGUgVW5pdmVyc2lkYWRlIEZlZGVyYWwgZG8gUmlvIEdyYW5kZSBkbyBOb3J0ZSB3aWxsIGNsZWFybHkgaWRlbnRpZnkgaXRzIG5hbWUgKHMpIGFzIHRoZSBhdXRob3IgKHMpIG9yIGhvbGRlciAocykgb2YgdGhlIGRvY3VtZW50J3MgcmlnaHRzCmRlbGl2ZXJlZCwgYW5kIHdpbGwgbm90IG1ha2UgYW55IGNoYW5nZXMsIG90aGVyIHRoYW4gdGhvc2UgcGVybWl0dGVkIGJ5CnRoaXMgbGljZW5zZQo=Repositório de PublicaçõesPUBhttp://repositorio.ufrn.br/oai/opendoar:2024-03-19T04:02:07Repositório Institucional da UFRN - Universidade Federal do Rio Grande do Norte (UFRN)false
dc.title.pt_BR.fl_str_mv Innovative improvement of sintered ceramic electrolytes by salt infiltration
title Innovative improvement of sintered ceramic electrolytes by salt infiltration
spellingShingle Innovative improvement of sintered ceramic electrolytes by salt infiltration
Nascimento, Rubens Maribondo do
Gd-doped ceria
Molten carbonates
Grain boundary
Impedance spectroscopy
title_short Innovative improvement of sintered ceramic electrolytes by salt infiltration
title_full Innovative improvement of sintered ceramic electrolytes by salt infiltration
title_fullStr Innovative improvement of sintered ceramic electrolytes by salt infiltration
title_full_unstemmed Innovative improvement of sintered ceramic electrolytes by salt infiltration
title_sort Innovative improvement of sintered ceramic electrolytes by salt infiltration
author Nascimento, Rubens Maribondo do
author_facet Nascimento, Rubens Maribondo do
Grilo, João Paulo de Freitas
Macedo, Daniel Araújo de
Marques, Fernando Manuel Bico
author_role author
author2 Grilo, João Paulo de Freitas
Macedo, Daniel Araújo de
Marques, Fernando Manuel Bico
author2_role author
author
author
dc.contributor.author.fl_str_mv Nascimento, Rubens Maribondo do
Grilo, João Paulo de Freitas
Macedo, Daniel Araújo de
Marques, Fernando Manuel Bico
dc.subject.por.fl_str_mv Gd-doped ceria
Molten carbonates
Grain boundary
Impedance spectroscopy
topic Gd-doped ceria
Molten carbonates
Grain boundary
Impedance spectroscopy
description 2030-12
publishDate 2021
dc.date.accessioned.fl_str_mv 2021-12-17T14:49:38Z
dc.date.issued.fl_str_mv 2021-02-15
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.citation.fl_str_mv GRILO, João P. F.; MACEDO, Daniel A.; NASCIMENTO, Rubens M.; MARQUES, Fernando M. B. Innovative improvement of sintered ceramic electrolytes by salt infiltration. Ceramics International, [S.L.], v. 47, n. 4, p. 5079-5090, fev. 2021. Disponível em: https://www.sciencedirect.com/science/article/pii/S0272884220331291?via%3Dihub. Acesso em: 31 mar. 2021. http://dx.doi.org/10.1016/j.ceramint.2020.10.086.
dc.identifier.uri.fl_str_mv https://repositorio.ufrn.br/handle/123456789/45458
dc.identifier.issn.none.fl_str_mv 0272-8842
dc.identifier.doi.none.fl_str_mv 10.1016/j.ceramint.2020.10.086
identifier_str_mv GRILO, João P. F.; MACEDO, Daniel A.; NASCIMENTO, Rubens M.; MARQUES, Fernando M. B. Innovative improvement of sintered ceramic electrolytes by salt infiltration. Ceramics International, [S.L.], v. 47, n. 4, p. 5079-5090, fev. 2021. Disponível em: https://www.sciencedirect.com/science/article/pii/S0272884220331291?via%3Dihub. Acesso em: 31 mar. 2021. http://dx.doi.org/10.1016/j.ceramint.2020.10.086.
0272-8842
10.1016/j.ceramint.2020.10.086
url https://repositorio.ufrn.br/handle/123456789/45458
dc.language.iso.fl_str_mv eng
language eng
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:Repositório Institucional da UFRN
instname:Universidade Federal do Rio Grande do Norte (UFRN)
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institution UFRN
reponame_str Repositório Institucional da UFRN
collection Repositório Institucional da UFRN
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