Effect of Sr substitution for Ca on the Ca3Co4O 9 thermoelectric properties

Ca3-xSrxCo4O9 polycrystalline thermoelectric ceramics with small amounts of Sr have been synthesized by the classical solid state method. Microstructural characterizations have shown that all the Sr has been incorporated into the Ca3Co4O9 and Ca3Co2O 6 structures and no Sr-based secondary phases hav...

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Autores: Constantinescu, G., Rasekh, Sh., Torres, M. A., Diez, J. C., Madre, M. A., Sotelo, Andres
Tipo de recurso: artículo
Estado:Versión enviada para evaluación y publicación
Fecha de publicación:2013
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/117557
Acceso en línea:http://hdl.handle.net/10261/117557
Access Level:acceso abierto
Palabra clave:Sintering
Cobaltites
Electrical properties
Thermopower
Doping
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spelling Effect of Sr substitution for Ca on the Ca3Co4O 9 thermoelectric propertiesConstantinescu, G.Rasekh, Sh.Torres, M. A.Diez, J. C.Madre, M. A.Sotelo, AndresSinteringCobaltitesElectrical propertiesThermopowerDopingCa3-xSrxCo4O9 polycrystalline thermoelectric ceramics with small amounts of Sr have been synthesized by the classical solid state method. Microstructural characterizations have shown that all the Sr has been incorporated into the Ca3Co4O9 and Ca3Co2O 6 structures and no Sr-based secondary phases have been produced. Apparent density measurements have shown that samples slightly increase their density until 0.05 Sr content, decreasing for higher contents. Electrical resistivity decreases and Seebeck coefficient slightly raises when Sr content increases until 0.07 Sr addition. The improvement in both parameters leads to higher power factor values than the usually obtained in samples prepared by the conventional solid state routes and close to those obtained in textured materials. © 2013 Elsevier B.V. All rights reserved.The authors wish to thank the Gobierno de Aragón (Research Groups T12 and T87) for financial support. The technical contributions of C. Estepa, and C. Gallego are also acknowledged. Sh. Rasekh also acknowledges a JAE-PreDoc 2010 grant from CSIC.Peer ReviewedElsevierGobierno de AragónConsejo Superior de Investigaciones Científicas (España)Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]2015201520132015info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Preprintinfo:eu-repo/semantics/submittedVersionhttp://hdl.handle.net/10261/117557reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttp://dx.doi.org/10.1016/j.jallcom.2013.07.005Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/1175572026-05-22T06:33:51Z
dc.title.none.fl_str_mv Effect of Sr substitution for Ca on the Ca3Co4O 9 thermoelectric properties
title Effect of Sr substitution for Ca on the Ca3Co4O 9 thermoelectric properties
spellingShingle Effect of Sr substitution for Ca on the Ca3Co4O 9 thermoelectric properties
Constantinescu, G.
Sintering
Cobaltites
Electrical properties
Thermopower
Doping
title_short Effect of Sr substitution for Ca on the Ca3Co4O 9 thermoelectric properties
title_full Effect of Sr substitution for Ca on the Ca3Co4O 9 thermoelectric properties
title_fullStr Effect of Sr substitution for Ca on the Ca3Co4O 9 thermoelectric properties
title_full_unstemmed Effect of Sr substitution for Ca on the Ca3Co4O 9 thermoelectric properties
title_sort Effect of Sr substitution for Ca on the Ca3Co4O 9 thermoelectric properties
dc.creator.none.fl_str_mv Constantinescu, G.
Rasekh, Sh.
Torres, M. A.
Diez, J. C.
Madre, M. A.
Sotelo, Andres
author Constantinescu, G.
author_facet Constantinescu, G.
Rasekh, Sh.
Torres, M. A.
Diez, J. C.
Madre, M. A.
Sotelo, Andres
author_role author
author2 Rasekh, Sh.
Torres, M. A.
Diez, J. C.
Madre, M. A.
Sotelo, Andres
author2_role author
author
author
author
author
dc.contributor.none.fl_str_mv Gobierno de Aragón
Consejo Superior de Investigaciones Científicas (España)
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Sintering
Cobaltites
Electrical properties
Thermopower
Doping
topic Sintering
Cobaltites
Electrical properties
Thermopower
Doping
description Ca3-xSrxCo4O9 polycrystalline thermoelectric ceramics with small amounts of Sr have been synthesized by the classical solid state method. Microstructural characterizations have shown that all the Sr has been incorporated into the Ca3Co4O9 and Ca3Co2O 6 structures and no Sr-based secondary phases have been produced. Apparent density measurements have shown that samples slightly increase their density until 0.05 Sr content, decreasing for higher contents. Electrical resistivity decreases and Seebeck coefficient slightly raises when Sr content increases until 0.07 Sr addition. The improvement in both parameters leads to higher power factor values than the usually obtained in samples prepared by the conventional solid state routes and close to those obtained in textured materials. © 2013 Elsevier B.V. All rights reserved.
publishDate 2013
dc.date.none.fl_str_mv 2013
2015
2015
2015
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Preprint
info:eu-repo/semantics/submittedVersion
format article
status_str submittedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/117557
url http://hdl.handle.net/10261/117557
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv http://dx.doi.org/10.1016/j.jallcom.2013.07.005
Sí
dc.rights.none.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:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15.811543

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