Optimizing Thermoelectric Properties through Compositional Engineering in Ag-Deficient AgSbTe2 Synthesized by Arc Melting

Thermoelectric materials offer a promising avenue for energy management, directly converting heat into electrical energy. Among them, AgSbTe2 has gained significant attention and continues to be a subject of research at further improving its thermoelectric performance and expanding its practical app...

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Detalles Bibliográficos
Autores: Prado-Gonjal, Jesús, García-Calvo, Elena, Gainza, Javier, Durá, Oscar J, Dejoie, Catherine, Nemes, Norbert M, Doménech, José Luis, Alonso, José Antonio, Serrano-Sánchez, Federico
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2024
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/396009
Acceso en línea:http://hdl.handle.net/10261/396009
https://api.elsevier.com/content/abstract/scopus_id/85187117482
Access Level:acceso abierto
Palabra clave:AgSbTe2
Arc-melting
Atomic displacement parameters
Compositional engineering
Synchrotron X-ray diffraction
Thermoelectric properties
Thermoelectrics
Vacancy
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spelling Optimizing Thermoelectric Properties through Compositional Engineering in Ag-Deficient AgSbTe2 Synthesized by Arc MeltingPrado-Gonjal, JesúsGarcía-Calvo, ElenaGainza, JavierDurá, Oscar JDejoie, CatherineNemes, Norbert MDoménech, José LuisAlonso, José AntonioSerrano-Sánchez, FedericoAgSbTe2Arc-meltingAtomic displacement parametersCompositional engineeringSynchrotron X-ray diffractionThermoelectric propertiesThermoelectricsVacancyThermoelectric materials offer a promising avenue for energy management, directly converting heat into electrical energy. Among them, AgSbTe2 has gained significant attention and continues to be a subject of research at further improving its thermoelectric performance and expanding its practical applications. This study focuses on Ag-deficient Ag0.7Sb1.12Te2 and Ag0.7Sb1.12Te1.95Se0.05 materials, examining the impact of compositional engineering within the AgSbTe2 thermoelectric system. These materials have been rapidly synthesized using an arc-melting technique, resulting in the production of dense nanostructured pellets. Detailed analysis through scanning electron microscopy (SEM) reveals the presence of a layered nanostructure, which significantly influences the thermoelectric properties of these materials. Synchrotron X-ray diffraction reveals significant changes in the lattice parameters and atomic displacement parameters (ADPs) that suggest a weakening of bond order in the structure. The thermoelectric characterization highlights the enhanced power factor of Ag-deficient materials that, combined with the low glass-like thermal conductivity, results in a significant improvement in the figure of merit, achieving zT values of 1.25 in Ag0.7Sb1.12Te2 and 1.01 in Ag0.7Sb1.12Te1.95Se0.05 at 750 K.Peer reviewedAmerican Chemical Society0000-0003-4880-8503#NODATA#0000-0002-1999-3116#NODATA#0000-0003-3313-3515#NODATA#0000-0001-9046-82370000-0001-5329-1225#NODATA#Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]202520252024info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://hdl.handle.net/10261/396009https://api.elsevier.com/content/abstract/scopus_id/85187117482reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)InglésThe underlying dataset has been published as supplementary material of the article in the publisher platform at DOI https://doi.org/10.1021/acsaelm.3c01653https://doi.org/10.1021/acsaelm.3c01653Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/3960092026-05-22T06:33:51Z
dc.title.none.fl_str_mv Optimizing Thermoelectric Properties through Compositional Engineering in Ag-Deficient AgSbTe2 Synthesized by Arc Melting
title Optimizing Thermoelectric Properties through Compositional Engineering in Ag-Deficient AgSbTe2 Synthesized by Arc Melting
spellingShingle Optimizing Thermoelectric Properties through Compositional Engineering in Ag-Deficient AgSbTe2 Synthesized by Arc Melting
Prado-Gonjal, Jesús
AgSbTe2
Arc-melting
Atomic displacement parameters
Compositional engineering
Synchrotron X-ray diffraction
Thermoelectric properties
Thermoelectrics
Vacancy
title_short Optimizing Thermoelectric Properties through Compositional Engineering in Ag-Deficient AgSbTe2 Synthesized by Arc Melting
title_full Optimizing Thermoelectric Properties through Compositional Engineering in Ag-Deficient AgSbTe2 Synthesized by Arc Melting
title_fullStr Optimizing Thermoelectric Properties through Compositional Engineering in Ag-Deficient AgSbTe2 Synthesized by Arc Melting
title_full_unstemmed Optimizing Thermoelectric Properties through Compositional Engineering in Ag-Deficient AgSbTe2 Synthesized by Arc Melting
title_sort Optimizing Thermoelectric Properties through Compositional Engineering in Ag-Deficient AgSbTe2 Synthesized by Arc Melting
dc.creator.none.fl_str_mv Prado-Gonjal, Jesús
García-Calvo, Elena
Gainza, Javier
Durá, Oscar J
Dejoie, Catherine
Nemes, Norbert M
Doménech, José Luis
Alonso, José Antonio
Serrano-Sánchez, Federico
author Prado-Gonjal, Jesús
author_facet Prado-Gonjal, Jesús
García-Calvo, Elena
Gainza, Javier
Durá, Oscar J
Dejoie, Catherine
Nemes, Norbert M
Doménech, José Luis
Alonso, José Antonio
Serrano-Sánchez, Federico
author_role author
author2 García-Calvo, Elena
Gainza, Javier
Durá, Oscar J
Dejoie, Catherine
Nemes, Norbert M
Doménech, José Luis
Alonso, José Antonio
Serrano-Sánchez, Federico
author2_role author
author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv 0000-0003-4880-8503
#NODATA#
0000-0002-1999-3116
#NODATA#
0000-0003-3313-3515
#NODATA#
0000-0001-9046-8237
0000-0001-5329-1225
#NODATA#
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv AgSbTe2
Arc-melting
Atomic displacement parameters
Compositional engineering
Synchrotron X-ray diffraction
Thermoelectric properties
Thermoelectrics
Vacancy
topic AgSbTe2
Arc-melting
Atomic displacement parameters
Compositional engineering
Synchrotron X-ray diffraction
Thermoelectric properties
Thermoelectrics
Vacancy
description Thermoelectric materials offer a promising avenue for energy management, directly converting heat into electrical energy. Among them, AgSbTe2 has gained significant attention and continues to be a subject of research at further improving its thermoelectric performance and expanding its practical applications. This study focuses on Ag-deficient Ag0.7Sb1.12Te2 and Ag0.7Sb1.12Te1.95Se0.05 materials, examining the impact of compositional engineering within the AgSbTe2 thermoelectric system. These materials have been rapidly synthesized using an arc-melting technique, resulting in the production of dense nanostructured pellets. Detailed analysis through scanning electron microscopy (SEM) reveals the presence of a layered nanostructure, which significantly influences the thermoelectric properties of these materials. Synchrotron X-ray diffraction reveals significant changes in the lattice parameters and atomic displacement parameters (ADPs) that suggest a weakening of bond order in the structure. The thermoelectric characterization highlights the enhanced power factor of Ag-deficient materials that, combined with the low glass-like thermal conductivity, results in a significant improvement in the figure of merit, achieving zT values of 1.25 in Ag0.7Sb1.12Te2 and 1.01 in Ag0.7Sb1.12Te1.95Se0.05 at 750 K.
publishDate 2024
dc.date.none.fl_str_mv 2024
2025
2025
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Publisher's version
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/396009
https://api.elsevier.com/content/abstract/scopus_id/85187117482
url http://hdl.handle.net/10261/396009
https://api.elsevier.com/content/abstract/scopus_id/85187117482
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv The underlying dataset has been published as supplementary material of the article in the publisher platform at DOI https://doi.org/10.1021/acsaelm.3c01653
https://doi.org/10.1021/acsaelm.3c01653
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv American Chemical Society
publisher.none.fl_str_mv American Chemical Society
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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