Cobalt-free perovskite Pr0.5Sr0.5Fe1 xCuxO3 d(PSFC) as a cathodematerial for intermediate temperature solid oxide fuel cells

Detalhes bibliográficos
Autor(a) principal: Nascimento, Rubens Maribondo do
Data de Publicação: 2016
Outros Autores: Moura, Caroline Gomes, Fagg, Duncan Paul, Grilo, João Paulo de Freitas, Macedo, Daniel Araújo de, Cesário, Moises Rômolos
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFRN
Texto Completo: https://repositorio.ufrn.br/handle/123456789/45570
Resumo: SFC (Pr0.5Sr0.5Fe1 xCuxO3 d) is a new perovskite-type oxide that has gained considerable attention ascathode material for intermediate temperature solid oxide fuel cells (IT-SOFCs), due to its high mixedionic-electronic conductivity below 800 C. In this work, PSFC (Pr0.5Sr0.5Fe1 xCuxO3 d,x¼0.2 and 0.4)powders were synthesized by the citrate method and structurally characterized by X-ray diffractometry.Screen-printed cathodes were sintered at 1050 C and electrochemically characterized by impedancespectroscopy at 600e800 C in pure oxygen. The area specific resistances (ASR) of thePr0.5Sr0.5Fe0.8Cu0.2O3 dmaterial are shown to be competitive with typical values reported for cobalt-based cathodes in the measured temperature range, while, importantly, offering a significantly loweractivation energy, 0.62 eV. The thermal expansion coefficients of these Co-free cathodes are in the rangeof 13e15 10 6 C 1, in a temperature range 200e650 C, demonstrating a good thermal compatibilitywith gadolinia doped ceria (CGO) electrolytes
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spelling Nascimento, Rubens Maribondo doMoura, Caroline GomesFagg, Duncan PaulGrilo, João Paulo de FreitasMacedo, Daniel Araújo deCesário, Moises Rômolos2022-01-05T14:38:56Z2022-01-05T14:38:56Z2016-09-01MOURA, Caroline G.; GRILO, João Paulo de F.; MACEDO, Daniel A.; CESÁRIO, Moisés R.; FAGG, Duncan Paul; NASCIMENTO, Rubens M. Cobalt-free perovskite Pr0.5Sr0.5Fe1−xCuxO3−δ (PSFC) as a cathode material for intermediate temperature solid oxide fuel cells. Materials Chemistry and Physics, [S.L.], v. 180, p. 256-262, set. 2016. Disponível em: https://www.sciencedirect.com/science/article/abs/pii/S0254058416304175?via%3Dihub. Acesso em: 05 abr. 2021. http://dx.doi.org/10.1016/j.matchemphys.2016.06.005.0254-0584https://repositorio.ufrn.br/handle/123456789/4557010.1016/j.matchemphys.2016.06.005ElsevierAttribution-NonCommercial-NoDerivs 3.0 Brazilhttp://creativecommons.org/licenses/by-nc-nd/3.0/br/info:eu-repo/semantics/openAccessOxidesChemical synthesisImpedance spectroscopyX-ray diffractionThermal expansionCobalt-free perovskite Pr0.5Sr0.5Fe1 xCuxO3 d(PSFC) as a cathodematerial for intermediate temperature solid oxide fuel cellsinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleSFC (Pr0.5Sr0.5Fe1 xCuxO3 d) is a new perovskite-type oxide that has gained considerable attention ascathode material for intermediate temperature solid oxide fuel cells (IT-SOFCs), due to its high mixedionic-electronic conductivity below 800 C. In this work, PSFC (Pr0.5Sr0.5Fe1 xCuxO3 d,x¼0.2 and 0.4)powders were synthesized by the citrate method and structurally characterized by X-ray diffractometry.Screen-printed cathodes were sintered at 1050 C and electrochemically characterized by impedancespectroscopy at 600e800 C in pure oxygen. The area specific resistances (ASR) of thePr0.5Sr0.5Fe0.8Cu0.2O3 dmaterial are shown to be competitive with typical values reported for cobalt-based cathodes in the measured temperature range, while, importantly, offering a significantly loweractivation energy, 0.62 eV. The thermal expansion coefficients of these Co-free cathodes are in the rangeof 13e15 10 6 C 1, in a temperature range 200e650 C, demonstrating a good thermal compatibilitywith gadolinia doped ceria (CGO) electrolytesengreponame:Repositório Institucional da UFRNinstname:Universidade Federal do Rio Grande do Norte (UFRN)instacron:UFRNCC-LICENSElicense_rdflicense_rdfapplication/rdf+xml; charset=utf-8811https://repositorio.ufrn.br/bitstream/123456789/45570/2/license_rdfe39d27027a6cc9cb039ad269a5db8e34MD52LICENSElicense.txtlicense.txttext/plain; charset=utf-81484https://repositorio.ufrn.br/bitstream/123456789/45570/3/license.txte9597aa2854d128fd968be5edc8a28d9MD53ORIGINALCobalt-freePerovskite_Nascimento_2016.pdfCobalt-freePerovskite_Nascimento_2016.pdfapplication/pdf1161513https://repositorio.ufrn.br/bitstream/123456789/45570/1/Cobalt-freePerovskite_Nascimento_2016.pdfab6b23970c488881951aab0521f72119MD51123456789/455702022-01-05 11:38:58.481oai:https://repositorio.ufrn.br:123456789/45570Tk9OLUVYQ0xVU0lWRSBESVNUUklCVVRJT04gTElDRU5TRQoKCkJ5IHNpZ25pbmcgYW5kIGRlbGl2ZXJpbmcgdGhpcyBsaWNlbnNlLCBNci4gKGF1dGhvciBvciBjb3B5cmlnaHQgaG9sZGVyKToKCgphKSBHcmFudHMgdGhlIFVuaXZlcnNpZGFkZSBGZWRlcmFsIFJpbyBHcmFuZGUgZG8gTm9ydGUgdGhlIG5vbi1leGNsdXNpdmUgcmlnaHQgb2YKcmVwcm9kdWNlLCBjb252ZXJ0IChhcyBkZWZpbmVkIGJlbG93KSwgY29tbXVuaWNhdGUgYW5kIC8gb3IKZGlzdHJpYnV0ZSB0aGUgZGVsaXZlcmVkIGRvY3VtZW50IChpbmNsdWRpbmcgYWJzdHJhY3QgLyBhYnN0cmFjdCkgaW4KZGlnaXRhbCBvciBwcmludGVkIGZvcm1hdCBhbmQgaW4gYW55IG1lZGl1bS4KCmIpIERlY2xhcmVzIHRoYXQgdGhlIGRvY3VtZW50IHN1Ym1pdHRlZCBpcyBpdHMgb3JpZ2luYWwgd29yaywgYW5kIHRoYXQKeW91IGhhdmUgdGhlIHJpZ2h0IHRvIGdyYW50IHRoZSByaWdodHMgY29udGFpbmVkIGluIHRoaXMgbGljZW5zZS4gRGVjbGFyZXMKdGhhdCB0aGUgZGVsaXZlcnkgb2YgdGhlIGRvY3VtZW50IGRvZXMgbm90IGluZnJpbmdlLCBhcyBmYXIgYXMgaXQgaXMKdGhlIHJpZ2h0cyBvZiBhbnkgb3RoZXIgcGVyc29uIG9yIGVudGl0eS4KCmMpIElmIHRoZSBkb2N1bWVudCBkZWxpdmVyZWQgY29udGFpbnMgbWF0ZXJpYWwgd2hpY2ggZG9lcyBub3QKcmlnaHRzLCBkZWNsYXJlcyB0aGF0IGl0IGhhcyBvYnRhaW5lZCBhdXRob3JpemF0aW9uIGZyb20gdGhlIGhvbGRlciBvZiB0aGUKY29weXJpZ2h0IHRvIGdyYW50IHRoZSBVbml2ZXJzaWRhZGUgRmVkZXJhbCBkbyBSaW8gR3JhbmRlIGRvIE5vcnRlIHRoZSByaWdodHMgcmVxdWlyZWQgYnkgdGhpcyBsaWNlbnNlLCBhbmQgdGhhdCB0aGlzIG1hdGVyaWFsIHdob3NlIHJpZ2h0cyBhcmUgb2YKdGhpcmQgcGFydGllcyBpcyBjbGVhcmx5IGlkZW50aWZpZWQgYW5kIHJlY29nbml6ZWQgaW4gdGhlIHRleHQgb3IKY29udGVudCBvZiB0aGUgZG9jdW1lbnQgZGVsaXZlcmVkLgoKSWYgdGhlIGRvY3VtZW50IHN1Ym1pdHRlZCBpcyBiYXNlZCBvbiBmdW5kZWQgb3Igc3VwcG9ydGVkIHdvcmsKYnkgYW5vdGhlciBpbnN0aXR1dGlvbiBvdGhlciB0aGFuIHRoZSBVbml2ZXJzaWRhZGUgRmVkZXJhbCBkbyBSaW8gR3JhbmRlIGRvIE5vcnRlLCBkZWNsYXJlcyB0aGF0IGl0IGhhcyBmdWxmaWxsZWQgYW55IG9ibGlnYXRpb25zIHJlcXVpcmVkIGJ5IHRoZSByZXNwZWN0aXZlIGFncmVlbWVudCBvciBhZ3JlZW1lbnQuCgpUaGUgVW5pdmVyc2lkYWRlIEZlZGVyYWwgZG8gUmlvIEdyYW5kZSBkbyBOb3J0ZSB3aWxsIGNsZWFybHkgaWRlbnRpZnkgaXRzIG5hbWUgKHMpIGFzIHRoZSBhdXRob3IgKHMpIG9yIGhvbGRlciAocykgb2YgdGhlIGRvY3VtZW50J3MgcmlnaHRzCmRlbGl2ZXJlZCwgYW5kIHdpbGwgbm90IG1ha2UgYW55IGNoYW5nZXMsIG90aGVyIHRoYW4gdGhvc2UgcGVybWl0dGVkIGJ5CnRoaXMgbGljZW5zZQo=Repositório de PublicaçõesPUBhttp://repositorio.ufrn.br/oai/opendoar:2022-01-05T14:38:58Repositório Institucional da UFRN - Universidade Federal do Rio Grande do Norte (UFRN)false
dc.title.pt_BR.fl_str_mv Cobalt-free perovskite Pr0.5Sr0.5Fe1 xCuxO3 d(PSFC) as a cathodematerial for intermediate temperature solid oxide fuel cells
title Cobalt-free perovskite Pr0.5Sr0.5Fe1 xCuxO3 d(PSFC) as a cathodematerial for intermediate temperature solid oxide fuel cells
spellingShingle Cobalt-free perovskite Pr0.5Sr0.5Fe1 xCuxO3 d(PSFC) as a cathodematerial for intermediate temperature solid oxide fuel cells
Nascimento, Rubens Maribondo do
Oxides
Chemical synthesis
Impedance spectroscopy
X-ray diffraction
Thermal expansion
title_short Cobalt-free perovskite Pr0.5Sr0.5Fe1 xCuxO3 d(PSFC) as a cathodematerial for intermediate temperature solid oxide fuel cells
title_full Cobalt-free perovskite Pr0.5Sr0.5Fe1 xCuxO3 d(PSFC) as a cathodematerial for intermediate temperature solid oxide fuel cells
title_fullStr Cobalt-free perovskite Pr0.5Sr0.5Fe1 xCuxO3 d(PSFC) as a cathodematerial for intermediate temperature solid oxide fuel cells
title_full_unstemmed Cobalt-free perovskite Pr0.5Sr0.5Fe1 xCuxO3 d(PSFC) as a cathodematerial for intermediate temperature solid oxide fuel cells
title_sort Cobalt-free perovskite Pr0.5Sr0.5Fe1 xCuxO3 d(PSFC) as a cathodematerial for intermediate temperature solid oxide fuel cells
author Nascimento, Rubens Maribondo do
author_facet Nascimento, Rubens Maribondo do
Moura, Caroline Gomes
Fagg, Duncan Paul
Grilo, João Paulo de Freitas
Macedo, Daniel Araújo de
Cesário, Moises Rômolos
author_role author
author2 Moura, Caroline Gomes
Fagg, Duncan Paul
Grilo, João Paulo de Freitas
Macedo, Daniel Araújo de
Cesário, Moises Rômolos
author2_role author
author
author
author
author
dc.contributor.author.fl_str_mv Nascimento, Rubens Maribondo do
Moura, Caroline Gomes
Fagg, Duncan Paul
Grilo, João Paulo de Freitas
Macedo, Daniel Araújo de
Cesário, Moises Rômolos
dc.subject.por.fl_str_mv Oxides
Chemical synthesis
Impedance spectroscopy
X-ray diffraction
Thermal expansion
topic Oxides
Chemical synthesis
Impedance spectroscopy
X-ray diffraction
Thermal expansion
description SFC (Pr0.5Sr0.5Fe1 xCuxO3 d) is a new perovskite-type oxide that has gained considerable attention ascathode material for intermediate temperature solid oxide fuel cells (IT-SOFCs), due to its high mixedionic-electronic conductivity below 800 C. In this work, PSFC (Pr0.5Sr0.5Fe1 xCuxO3 d,x¼0.2 and 0.4)powders were synthesized by the citrate method and structurally characterized by X-ray diffractometry.Screen-printed cathodes were sintered at 1050 C and electrochemically characterized by impedancespectroscopy at 600e800 C in pure oxygen. The area specific resistances (ASR) of thePr0.5Sr0.5Fe0.8Cu0.2O3 dmaterial are shown to be competitive with typical values reported for cobalt-based cathodes in the measured temperature range, while, importantly, offering a significantly loweractivation energy, 0.62 eV. The thermal expansion coefficients of these Co-free cathodes are in the rangeof 13e15 10 6 C 1, in a temperature range 200e650 C, demonstrating a good thermal compatibilitywith gadolinia doped ceria (CGO) electrolytes
publishDate 2016
dc.date.issued.fl_str_mv 2016-09-01
dc.date.accessioned.fl_str_mv 2022-01-05T14:38:56Z
dc.date.available.fl_str_mv 2022-01-05T14:38:56Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
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status_str publishedVersion
dc.identifier.citation.fl_str_mv MOURA, Caroline G.; GRILO, João Paulo de F.; MACEDO, Daniel A.; CESÁRIO, Moisés R.; FAGG, Duncan Paul; NASCIMENTO, Rubens M. Cobalt-free perovskite Pr0.5Sr0.5Fe1−xCuxO3−δ (PSFC) as a cathode material for intermediate temperature solid oxide fuel cells. Materials Chemistry and Physics, [S.L.], v. 180, p. 256-262, set. 2016. Disponível em: https://www.sciencedirect.com/science/article/abs/pii/S0254058416304175?via%3Dihub. Acesso em: 05 abr. 2021. http://dx.doi.org/10.1016/j.matchemphys.2016.06.005.
dc.identifier.uri.fl_str_mv https://repositorio.ufrn.br/handle/123456789/45570
dc.identifier.issn.none.fl_str_mv 0254-0584
dc.identifier.doi.none.fl_str_mv 10.1016/j.matchemphys.2016.06.005
identifier_str_mv MOURA, Caroline G.; GRILO, João Paulo de F.; MACEDO, Daniel A.; CESÁRIO, Moisés R.; FAGG, Duncan Paul; NASCIMENTO, Rubens M. Cobalt-free perovskite Pr0.5Sr0.5Fe1−xCuxO3−δ (PSFC) as a cathode material for intermediate temperature solid oxide fuel cells. Materials Chemistry and Physics, [S.L.], v. 180, p. 256-262, set. 2016. Disponível em: https://www.sciencedirect.com/science/article/abs/pii/S0254058416304175?via%3Dihub. Acesso em: 05 abr. 2021. http://dx.doi.org/10.1016/j.matchemphys.2016.06.005.
0254-0584
10.1016/j.matchemphys.2016.06.005
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rights_invalid_str_mv Attribution-NonCommercial-NoDerivs 3.0 Brazil
http://creativecommons.org/licenses/by-nc-nd/3.0/br/
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