Szczegóły publikacji
Opis bibliograficzny
Modification of tetrahedrite $Cu_{12}Sb_{4}S_{13}$ thermoelectric performance via the combined treatment of mechanochemistry and composite formation / Peter Baláž, Arda Baran Burcak, Umut Aydemir, Andrzej MIKUŁA, Paweł NIERODA, Matej Baláž, Lenka Findoráková, Radovan Bureš, Viktor Puchý, Murat Erdemoglu, Marcela Achimovičová, Emmanuel Guilmeau, Sandy Al Bacha // Solid State Sciences ; ISSN 1293-2558. — 2024 — vol. 151 art. no. 107497, s. 1–8. — Bibliogr. s. 8, Abstr. — Publikacja dostępna online od: 2024-03-08
Autorzy (13)
- Baláž Peter
- Baran Burcak Arda
- Aydemir Umut
- AGHMikuła Andrzej
- AGHNieroda Paweł
- Baláž Matej
- Findoráková Lenka
- Bureš Radovan
- Puchý Viktor
- Erdemoglu Murat
- Achimovičová Marcela
- Guilmeau Emmanuel
- Al Bacha Sandy
Słowa kluczowe
Dane bibliometryczne
| ID BaDAP | 152749 |
|---|---|
| Data dodania do BaDAP | 2024-05-10 |
| Tekst źródłowy | URL |
| DOI | 10.1016/j.solidstatesciences.2024.107497 |
| Rok publikacji | 2024 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Creative Commons | |
| Czasopismo/seria | Solid State Sciences |
Abstract
Tetrahedrite 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 mΩ 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 non-traditional approaches to synthesize tetrahedrite composites form a platform for potential modification of its thermoelectric performance.
