Improving thermoelectric properties of Ca3Co4O9+ through both Na doping and K addition at optimal values

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dc.authoridSotelo Mieg, Andres E./0000-0001-7056-0546
dc.authoridTorres Portero, Miguel Angel/0000-0003-3995-5763
dc.contributor.authorOzkurt, Berdan
dc.contributor.authorAytekin, M. Ersin
dc.contributor.authorMadre, M. A.
dc.contributor.authorSotelo, A.
dc.contributor.authorTorres, M. A.
dc.date.accessioned2025-03-17T12:27:36Z
dc.date.available2025-03-17T12:27:36Z
dc.date.issued2019
dc.departmentTarsus Üniversitesi
dc.description.abstractCa2.93Na0.07Co4Oy/x wt% K2CO3 (x=0.00, 0.01, and 0.03) polycrystalline ceramics were prepared by conventional solid-state method. XRD results have shown that all samples predominantly include Ca3Co4O9 phase together with small amounts of secondary phases. SEM images show that all samples have randomly oriented plate-like grains in different sizes. The electrical resistivity measurement showed that electrical properties of Ca3Co4O9 ceramics can be improved significantly by both, Na doping and K addition at their optimal values. The effect of dopants on thermoelectric properties of Ca3Co4O9 was examined by both, Seebeck coefficient and power factor, being higher in K-added than in the pure samples, indicating that thermoelectric properties of samples are positively affected when alkaline elements enter into their structure.
dc.description.sponsorshipBAP Research Fund of Mersin University, Mersin, Turkey [2018-3-TP3-3086]; Spanish MINECO-FEDER [MAT2017-82183-C3-1-R]; Gobierno de Aragon-FEDER [T 54-17R]
dc.description.sponsorshipAll samples have been prepared in the Material Preparation Laboratory in Tarsus University in Turkey. As XRD and SEM measurements have been made in the METAM Central Laboratory in Mersin University, other measurements in this study have been made in the Laboratory of Instituto de Ciencia de Materiales de Aragon (CSIC-Universidad de Zaragoza). B. ozkurt and M.E. Aytekin are supported by the BAP Research Fund of Mersin University, Mersin, Turkey, under Grand Contracts No. 2018-3-TP3-3086. M.A. Madre, M.A. Torres, and A. Sotelo acknowledge the Spanish MINECO-FEDER (MAT2017-82183-C3-1-R), and the Gobierno de Aragon-FEDER (Research Group T 54-17R) for funding.
dc.identifier.doi10.1007/s10854-019-01209-z
dc.identifier.endpage8837
dc.identifier.issn0957-4522
dc.identifier.issn1573-482X
dc.identifier.issue9
dc.identifier.scopus2-s2.0-85064207078
dc.identifier.scopusqualityQ2
dc.identifier.startpage8832
dc.identifier.urihttps://doi.org/10.1007/s10854-019-01209-z
dc.identifier.urihttps://hdl.handle.net/20.500.13099/2348
dc.identifier.volume30
dc.identifier.wosWOS:000468050800075
dc.identifier.wosqualityQ2
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherSpringer
dc.relation.ispartofJournal of Materials Science-Materials in Electronics
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_WOS_20250316
dc.subjectAg Addition
dc.subjectTemperature
dc.subjectSubstitution
dc.subjectEnhancement
dc.subjectCeramics
dc.subjectPerformance
dc.subjectImprovement
dc.subjectCa
dc.subjectSr
dc.subjectLi
dc.titleImproving thermoelectric properties of Ca3Co4O9+ through both Na doping and K addition at optimal values
dc.typeArticle

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