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dc.contributor.author
Chanquia, Corina Mercedes
dc.contributor.author
Montenegro Hernandez, Alejandra
dc.contributor.author
Troiani, Horacio Esteban
dc.contributor.author
Caneiro, Alberto
dc.date.available
2017-12-14T18:06:01Z
dc.date.issued
2014-01-01
dc.identifier.citation
Chanquia, Corina Mercedes; Montenegro Hernandez, Alejandra; Troiani, Horacio Esteban; Caneiro, Alberto; A bottom-up building process of nanostructured La0.75Sr0.25Cr0.5Mn0.5O3d electrodes for symmetrical-solid oxide fuel cell: Synthesis, characterization and electrocatalytic testing; Elsevier Science; Journal of Power Sources; 245; 1-1-2014; 377-388
dc.identifier.issn
0378-7753
dc.identifier.uri
http://hdl.handle.net/11336/30662
dc.description.abstract
Pure-phase La0.75Sr0.25Cr0.5Mn0.5O3-δ (LSCM) nanocrystallites have been successfully synthesized by the combustion method, employing glycine as fuel and complexing agent, and ammonium nitrate as combustion trigger. A detailed morphological and structural characterization is performed, by using of X-ray diffraction, N2 physisorption and electron microscopy. The LSCM material consists in interconnected nanocrystallites (∼30 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 LSCM nanopowder has trigonal/rhombohedral symmetry in the R-3c space group. By employing the spin coating technique and quick-stuck thermal treatments of the ink-electrolyte, electrodes with different crystallite size (95, 160 and 325 nm) are built onto both sides of the La0.8Sr0.2Ga0.8Mg0.2O3-δ-disk electrolyte. To test the influence of the electrode crystallite size on the electrocatalytic behavior of the symmetrical cells, electrochemical impedance spectroscopy measurements at 800 ºC were performed. When the electrode crystallite size becomes smaller, the area specific resistance decreases from 3.6 to 1.31 Ω cm2 under 0.2O2-0.8Ar atmosphere, possibly due to the enlarging of the triple phase boundary, while this value increases from 7.04 to 13.78 Ω cm2 under 0.17H2-0.03H2O-0.8Ar atmosphere, probably due to thermodynamic instability of the LSCM nanocrystallites.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Elsevier Science
dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Perovskite Oxide
dc.subject
Combustion Method
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Nanocrystallites
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Nanoelectrodes
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Symmetrical Cells
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Solid Oxide Fuel Cells
dc.subject.classification
Nano-materiales
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Nanotecnología
dc.subject.classification
INGENIERÍAS Y TECNOLOGÍAS
dc.title
A bottom-up building process of nanostructured La0.75Sr0.25Cr0.5Mn0.5O3d electrodes for symmetrical-solid oxide fuel cell: Synthesis, characterization and electrocatalytic testing
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2017-09-11T13:59:39Z
dc.journal.volume
245
dc.journal.pagination
377-388
dc.journal.pais
Países Bajos
dc.journal.ciudad
Amsterdam
dc.conicet.avisoEditorial
Este artículo se encuentra disponible de forma completa en el sitio web de la editorial.
dc.description.fil
Fil: Chanquia, Corina Mercedes. Comisión Nacional de Energía Atómica. Gerencia de Area de Aplicaciones de la Tecnología Nuclear. Gerencia de Investigación Aplicada; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
dc.description.fil
Fil: Montenegro Hernandez, Alejandra. Comisión Nacional de Energía Atómica. Gerencia de Area de Aplicaciones de la Tecnología Nuclear. Gerencia de Investigación Aplicada; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
dc.description.fil
Fil: Troiani, Horacio Esteban. Comision Nacional de Energía Atómica. Gerencia de Área Investigaciones y Aplicaciones no Nucleares. Gerencia de Física (Centro Atómico Bariloche). División Física de Metales; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
dc.description.fil
Fil: Caneiro, Alberto. Comisión Nacional de Energía Atómica. Gerencia de Area de Aplicaciones de la Tecnología Nuclear. Gerencia de Investigación Aplicada; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
dc.journal.title
Journal of Power Sources
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.jpowsour.2013.06.124
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0378775313011312


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