Highly active La0.4Sr0.6Co0.8Fe0.2O3−δ nanocatalyst for oxygen reduction in intermediate temperature-solid oxide fuel cells
- Autores
- Chanquia, Corina Mercedes; Mogni, Liliana Verónica; Troiani, Horacio Esteban; Caneiro, Alberto
- Año de publicación
- 2014
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- Pure-phase La0.4Sr0.6Co0.8Fe0.2O3−δ (LSCF) nanocrystallites were successfully synthesized by the combustion method, by employing glycine as fuel and complexing agent, and ammonium nitrate as combustion trigger. The morphological and structural characterization of the LSCF nanopowders was performed by using X-ray diffraction, N2 physisorption and electron microscopy. The LSCF nanopowder consists of interconnected nanocrystallites (∼45 nm) forming a sponge-like structure with meso and macropores, being its specific surface area around 10 m2 g−1. Crystalline structural analyses show that the LSCF nanopowder presents cubic symmetry in the Pm-3m space group. By employing the spin coating technique and different thermal treatments, symmetrical cells with different electrode crystallite size (45 and 685 nm) were built, by using La0.8Sr0.2Ga0.8Mg0.2O3−δ as electrolyte. Electrochemical impedance spectroscopy measurements were performed varying temperature and pO2. The area specific resistance of the nanostructured sample (45 nm) decreases by two orders of magnitude with respect to the submicrostructured sample (685 nm), reaching values as low as 0.8 Ω cm2 at 450 °C. This improvement is attributed to the cathode morphology optimization in the nanoscale, i.e., enlargement of the exposed surface area and shortening of the oxygen diffusion paths, which reduce the polarization resistance associated to the surface exchange and O-ion bulk diffusion process.
Fil: Chanquia, Corina Mercedes. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; Argentina. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Mogni, Liliana Verónica. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; Argentina. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Troiani, Horacio Esteban. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; Argentina. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Caneiro, Alberto. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; Argentina. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina - Materia
-
Combustion Synthesis
Nanocrystallites
La0.4sr0.6co0.8fe0.2o3-D
Solid Oxide Fuel Cell - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
- Repositorio
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/34363
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Highly active La0.4Sr0.6Co0.8Fe0.2O3−δ nanocatalyst for oxygen reduction in intermediate temperature-solid oxide fuel cellsChanquia, Corina MercedesMogni, Liliana VerónicaTroiani, Horacio EstebanCaneiro, AlbertoCombustion SynthesisNanocrystallitesLa0.4sr0.6co0.8fe0.2o3-DSolid Oxide Fuel Cellhttps://purl.org/becyt/ford/1.4https://purl.org/becyt/ford/1Pure-phase La0.4Sr0.6Co0.8Fe0.2O3−δ (LSCF) nanocrystallites were successfully synthesized by the combustion method, by employing glycine as fuel and complexing agent, and ammonium nitrate as combustion trigger. The morphological and structural characterization of the LSCF nanopowders was performed by using X-ray diffraction, N2 physisorption and electron microscopy. The LSCF nanopowder consists of interconnected nanocrystallites (∼45 nm) forming a sponge-like structure with meso and macropores, being its specific surface area around 10 m2 g−1. Crystalline structural analyses show that the LSCF nanopowder presents cubic symmetry in the Pm-3m space group. By employing the spin coating technique and different thermal treatments, symmetrical cells with different electrode crystallite size (45 and 685 nm) were built, by using La0.8Sr0.2Ga0.8Mg0.2O3−δ as electrolyte. Electrochemical impedance spectroscopy measurements were performed varying temperature and pO2. The area specific resistance of the nanostructured sample (45 nm) decreases by two orders of magnitude with respect to the submicrostructured sample (685 nm), reaching values as low as 0.8 Ω cm2 at 450 °C. This improvement is attributed to the cathode morphology optimization in the nanoscale, i.e., enlargement of the exposed surface area and shortening of the oxygen diffusion paths, which reduce the polarization resistance associated to the surface exchange and O-ion bulk diffusion process.Fil: Chanquia, Corina Mercedes. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; Argentina. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Mogni, Liliana Verónica. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; Argentina. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Troiani, Horacio Esteban. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; Argentina. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Caneiro, Alberto. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; Argentina. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaElsevier Science2014-07info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/34363Chanquia, Corina Mercedes; Mogni, Liliana Verónica; Troiani, Horacio Esteban; Caneiro, Alberto; Highly active La0.4Sr0.6Co0.8Fe0.2O3−δ nanocatalyst for oxygen reduction in intermediate temperature-solid oxide fuel cells; Elsevier Science; Journal of Power Sources; 270; 7-2014; 457-4670378-7753CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0378775314011860info:eu-repo/semantics/altIdentifier/doi/10.1016/j.jpowsour.2014.07.132info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-nd/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:05:02Zoai:ri.conicet.gov.ar:11336/34363instacron: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 10:05:02.803CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
Highly active La0.4Sr0.6Co0.8Fe0.2O3−δ nanocatalyst for oxygen reduction in intermediate temperature-solid oxide fuel cells |
title |
Highly active La0.4Sr0.6Co0.8Fe0.2O3−δ nanocatalyst for oxygen reduction in intermediate temperature-solid oxide fuel cells |
spellingShingle |
Highly active La0.4Sr0.6Co0.8Fe0.2O3−δ nanocatalyst for oxygen reduction in intermediate temperature-solid oxide fuel cells Chanquia, Corina Mercedes Combustion Synthesis Nanocrystallites La0.4sr0.6co0.8fe0.2o3-D Solid Oxide Fuel Cell |
title_short |
Highly active La0.4Sr0.6Co0.8Fe0.2O3−δ nanocatalyst for oxygen reduction in intermediate temperature-solid oxide fuel cells |
title_full |
Highly active La0.4Sr0.6Co0.8Fe0.2O3−δ nanocatalyst for oxygen reduction in intermediate temperature-solid oxide fuel cells |
title_fullStr |
Highly active La0.4Sr0.6Co0.8Fe0.2O3−δ nanocatalyst for oxygen reduction in intermediate temperature-solid oxide fuel cells |
title_full_unstemmed |
Highly active La0.4Sr0.6Co0.8Fe0.2O3−δ nanocatalyst for oxygen reduction in intermediate temperature-solid oxide fuel cells |
title_sort |
Highly active La0.4Sr0.6Co0.8Fe0.2O3−δ nanocatalyst for oxygen reduction in intermediate temperature-solid oxide fuel cells |
dc.creator.none.fl_str_mv |
Chanquia, Corina Mercedes Mogni, Liliana Verónica Troiani, Horacio Esteban Caneiro, Alberto |
author |
Chanquia, Corina Mercedes |
author_facet |
Chanquia, Corina Mercedes Mogni, Liliana Verónica Troiani, Horacio Esteban Caneiro, Alberto |
author_role |
author |
author2 |
Mogni, Liliana Verónica Troiani, Horacio Esteban Caneiro, Alberto |
author2_role |
author author author |
dc.subject.none.fl_str_mv |
Combustion Synthesis Nanocrystallites La0.4sr0.6co0.8fe0.2o3-D Solid Oxide Fuel Cell |
topic |
Combustion Synthesis Nanocrystallites La0.4sr0.6co0.8fe0.2o3-D Solid Oxide Fuel Cell |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.4 https://purl.org/becyt/ford/1 |
dc.description.none.fl_txt_mv |
Pure-phase La0.4Sr0.6Co0.8Fe0.2O3−δ (LSCF) nanocrystallites were successfully synthesized by the combustion method, by employing glycine as fuel and complexing agent, and ammonium nitrate as combustion trigger. The morphological and structural characterization of the LSCF nanopowders was performed by using X-ray diffraction, N2 physisorption and electron microscopy. The LSCF nanopowder consists of interconnected nanocrystallites (∼45 nm) forming a sponge-like structure with meso and macropores, being its specific surface area around 10 m2 g−1. Crystalline structural analyses show that the LSCF nanopowder presents cubic symmetry in the Pm-3m space group. By employing the spin coating technique and different thermal treatments, symmetrical cells with different electrode crystallite size (45 and 685 nm) were built, by using La0.8Sr0.2Ga0.8Mg0.2O3−δ as electrolyte. Electrochemical impedance spectroscopy measurements were performed varying temperature and pO2. The area specific resistance of the nanostructured sample (45 nm) decreases by two orders of magnitude with respect to the submicrostructured sample (685 nm), reaching values as low as 0.8 Ω cm2 at 450 °C. This improvement is attributed to the cathode morphology optimization in the nanoscale, i.e., enlargement of the exposed surface area and shortening of the oxygen diffusion paths, which reduce the polarization resistance associated to the surface exchange and O-ion bulk diffusion process. Fil: Chanquia, Corina Mercedes. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; Argentina. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Mogni, Liliana Verónica. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; Argentina. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Troiani, Horacio Esteban. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; Argentina. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Caneiro, Alberto. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; Argentina. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina |
description |
Pure-phase La0.4Sr0.6Co0.8Fe0.2O3−δ (LSCF) nanocrystallites were successfully synthesized by the combustion method, by employing glycine as fuel and complexing agent, and ammonium nitrate as combustion trigger. The morphological and structural characterization of the LSCF nanopowders was performed by using X-ray diffraction, N2 physisorption and electron microscopy. The LSCF nanopowder consists of interconnected nanocrystallites (∼45 nm) forming a sponge-like structure with meso and macropores, being its specific surface area around 10 m2 g−1. Crystalline structural analyses show that the LSCF nanopowder presents cubic symmetry in the Pm-3m space group. By employing the spin coating technique and different thermal treatments, symmetrical cells with different electrode crystallite size (45 and 685 nm) were built, by using La0.8Sr0.2Ga0.8Mg0.2O3−δ as electrolyte. Electrochemical impedance spectroscopy measurements were performed varying temperature and pO2. The area specific resistance of the nanostructured sample (45 nm) decreases by two orders of magnitude with respect to the submicrostructured sample (685 nm), reaching values as low as 0.8 Ω cm2 at 450 °C. This improvement is attributed to the cathode morphology optimization in the nanoscale, i.e., enlargement of the exposed surface area and shortening of the oxygen diffusion paths, which reduce the polarization resistance associated to the surface exchange and O-ion bulk diffusion process. |
publishDate |
2014 |
dc.date.none.fl_str_mv |
2014-07 |
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/11336/34363 Chanquia, Corina Mercedes; Mogni, Liliana Verónica; Troiani, Horacio Esteban; Caneiro, Alberto; Highly active La0.4Sr0.6Co0.8Fe0.2O3−δ nanocatalyst for oxygen reduction in intermediate temperature-solid oxide fuel cells; Elsevier Science; Journal of Power Sources; 270; 7-2014; 457-467 0378-7753 CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/34363 |
identifier_str_mv |
Chanquia, Corina Mercedes; Mogni, Liliana Verónica; Troiani, Horacio Esteban; Caneiro, Alberto; Highly active La0.4Sr0.6Co0.8Fe0.2O3−δ nanocatalyst for oxygen reduction in intermediate temperature-solid oxide fuel cells; Elsevier Science; Journal of Power Sources; 270; 7-2014; 457-467 0378-7753 CONICET Digital CONICET |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0378775314011860 info:eu-repo/semantics/altIdentifier/doi/10.1016/j.jpowsour.2014.07.132 |
dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-nd/2.5/ar/ |
eu_rights_str_mv |
openAccess |
rights_invalid_str_mv |
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/ |
dc.format.none.fl_str_mv |
application/pdf application/pdf application/pdf application/pdf application/pdf |
dc.publisher.none.fl_str_mv |
Elsevier Science |
publisher.none.fl_str_mv |
Elsevier Science |
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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1844613881911050240 |
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13.070432 |