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dc.contributor.author
Napolitano, Federico Ricardo
dc.contributor.author
Soldati, Analía Leticia
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Geck, Jochen
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Lamas, Diego German
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Serquis, Adriana Cristina
dc.date.available
2017-06-09T20:26:38Z
dc.date.issued
2013-05
dc.identifier.citation
Napolitano, Federico Ricardo; Soldati, Analía Leticia; Geck, Jochen; Lamas, Diego German; Serquis, Adriana Cristina; Electronic and structural properties of La0.4Sr0.6Ti1-yCoyO3±d electrode materials for symmetric SOFC studied by hard X-ray Absorption Spectroscopy; Pergamon-elsevier Science Ltd; International Journal of Hydrogen Energy; 38; 5-2013; 8965-8973
dc.identifier.issn
0360-3199
dc.identifier.uri
http://hdl.handle.net/11336/17933
dc.description.abstract
We present combined Synchrotron X-ray Absorption Near Edge Spectroscopy (XANES) and<br />Extended X-ray Absorption Fine Structure (EXAFS) study of La0.4Sr0.6Ti1yCoyO3d<br />(0 <=y <= 0.5), which are promising electrode materials for symmetric solid oxide fuel cells.<br />The measurements were performed at room temperature at the Ti and the Co K-edges in<br />order to determine the local structural and electronic changes around the two transition<br />metals. We find that Ti remains in a higher formal valence (around 4þ) independent of the<br />Co concentration. In contrast to this, dramatic and systematic changes are observed for the<br />Co as a function of y.We conclude that the stability of the Ti4þ triggers the A-site deficiency<br />in our samples and predicts that oxygen vacancies are much more easily formed at large<br />Co content, which in turn will greatly enhance the performance as electrode material.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Pergamon-elsevier Science Ltd
dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
dc.subject
Itsofc
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Xanes
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Xpd
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Electrodo Simetrico
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Cerámicos
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Ingeniería de los Materiales
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INGENIERÍAS Y TECNOLOGÍAS
dc.title
Electronic and structural properties of La0.4Sr0.6Ti1-yCoyO3±d electrode materials for symmetric SOFC studied by hard X-ray Absorption Spectroscopy
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2015-06-25T14:53:25Z
dc.journal.volume
38
dc.journal.pagination
8965-8973
dc.journal.pais
Estados Unidos
dc.journal.ciudad
Amsterdam
dc.description.fil
Fil: Napolitano, Federico Ricardo. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina
dc.description.fil
Fil: Soldati, Analía Leticia. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina
dc.description.fil
Fil: Geck, Jochen. Leibinz. Institute for Solid State and Materials Research; Alemania
dc.description.fil
Fil: Lamas, Diego German. Universidad Nacional del Comahue; Argentina
dc.description.fil
Fil: Serquis, Adriana Cristina. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina
dc.journal.title
International Journal of Hydrogen Energy
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/https://doi.org/10.1016/j.ijhydene.2013.05.005
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0360319913011403


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