Modification of tetrahedrite Cu12Sb4S13 thermoelectric performance via the combined treatment of mechanochemistry and composite formation

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dc.authoridBures, Radovan/0000-0003-0827-405X
dc.authoridMikula, Andrzej/0000-0002-8067-996X
dc.authoridErdemoglu, Murat/0000-0003-2922-7965
dc.authorwosidBures, Radovan/A-8682-2008
dc.contributor.authorBalaz, Peter
dc.contributor.authorBurcak, Arda Baran
dc.contributor.authorAydemir, Umut
dc.contributor.authorMikula, Andrzej
dc.contributor.authorNieroda, Pawel
dc.contributor.authorBalaz, Matej
dc.contributor.authorFindorakova, Lenka
dc.date.accessioned2024-08-04T20:55:11Z
dc.date.available2024-08-04T20:55:11Z
dc.date.issued2024
dc.departmentİnönü Üniversitesien_US
dc.description.abstractTetrahedrite Cu12Sb4S13 with its low thermal conductivity represents a flagship in sulphide thermoelectrics. However, to achieve a reasonable figure-of-merit ZT (measure of thermoelectric efficiency), adequate doping or special sample processing is needed. In this work, a different approach (without doping) is illustrated for the two tetrahedrite-containing systems. In the First approach binary composite tetrahedrite Cu12Sb4S13/chalcopyrite CuFeS2 was prepared by mechanochemical leaching with the aim to obtain partly decomposed tetrahedrite. In this approach, the alkaline leaching medium (Na2S + NaOH) was applied to extract Sb from tetrahedrite thus changing its composition. The obtained composite (formed from its own phases in an intrinsic mode) shows low values of ZT = 0.0022@673 K in comparison with the non-treated tetrahedrite where ZT was 0.0090@673 K. In this case the extremely high electric resistivity (6-20 m Omega cm-1) was documented. In the second approach binary composite tetrahedrite Cu12Sb4S13/muscovite KAl2(AlSi3O10)(OH)2 (formed from its own and foreign phases in an extrinsic mode) was prepared by two-step mechanical activation in which combined treatment of industrial vibratory milling and subsequent laboratory planetary milling was applied. The addition of a foreign phase, muscovite, did not give extraordinary thermoelectric performance results. However, the two-step milling process (without the addition of foreign phase) gives the value of ZT = 0.752@673 K which belongs to the highest in the tetrahedrite thermoelectric community. In this case, the two-times increase in specific surface area and the increased amount of tetrahedrite in comparison to famatinite are suspectable for this effect. Both applied nontraditional approaches to synthesize tetrahedrite composites form a platform for potential modification of its thermoelectric performance.en_US
dc.description.sponsorshipSlovak Agency VEGA [02/0112/22, 02/0036/23]; European Agency ERA -MIN 3en_US
dc.description.sponsorshipThis work was supported by Slovak Agency VEGA (projects 02/0112/22, 02/0036/23) . The support by the European Agency ERA -MIN 3 (project Potassial 27) is also acknowledged.en_US
dc.identifier.doi10.1016/j.solidstatesciences.2024.107497
dc.identifier.issn1293-2558
dc.identifier.issn1873-3085
dc.identifier.scopus2-s2.0-85188660068en_US
dc.identifier.scopusqualityQ2en_US
dc.identifier.urihttps://doi.org/10.1016/j.solidstatesciences.2024.107497
dc.identifier.urihttps://hdl.handle.net/11616/101895
dc.identifier.volume151en_US
dc.identifier.wosWOS:001218128000001en_US
dc.identifier.wosqualityN/Aen_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherElsevieren_US
dc.relation.ispartofSolid State Sciencesen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectTetrahedriteen_US
dc.subjectChalcopyriteen_US
dc.subjectMuscoviteen_US
dc.subjectCompositeen_US
dc.subjectMechanochemistryen_US
dc.subjectThermoelectricsen_US
dc.titleModification of tetrahedrite Cu12Sb4S13 thermoelectric performance via the combined treatment of mechanochemistry and composite formationen_US
dc.typeArticleen_US

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