Szczegóły publikacji
Opis bibliograficzny
Effect of interface thermal resistance on thermoelectric properties of acoustically mismatched composite / Ashutosh Kumar, Krzysztof T. WOJCIECHOWSKI // Journal of the European Ceramic Society ; ISSN 0955-2219. — Tytuł poprz.: International Journal of High Technology Ceramics. — 2022 — vol. 42 iss. 10, s. 4227–4232. — Bibliogr. s. 4231–4232, Abstr. — Publikacja dostępna online od: 2022-03-31
Autorzy (2)
Słowa kluczowe
Dane bibliometryczne
| ID BaDAP | 140561 |
|---|---|
| Data dodania do BaDAP | 2022-06-23 |
| Tekst źródłowy | URL |
| DOI | 10.1016/j.jeurceramsoc.2022.03.062 |
| Rok publikacji | 2022 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Czasopismo/seria | Journal of the European Ceramic Society |
Abstract
Composite materials can be promising to decouple electron and phonon transport for improved thermoelectric properties. Herein, the synergistic effect of the particle size of the dispersed phase and the interface thermal resistance (R-int) between the phases on the phonon thermal conductivity (kappa(ph)) of the (1-x)La0.95Sr0.05-Co0.95Mn0.05O3/(x)WC thermoelectric composite is demonstrated. The embedded WC, owing to its high electrical conductivity (sigma), does improve sigma of the composite. A high acoustic impedance mismatch between the phases results in a large R-int and lowers kappa(ph). Change in kappa(ph) is further explained using theoretical analysis of Bruggeman asymmetrical model. The correlation between R-int and Kapitza radius is discussed to analyze the reduced kappa ph. Synergistic effect of improved sigma and lowered kappa ph result in improved thermoelectric figure of merit (zT) of 0.20 at 463 K for (1-x)La0.95Sr0.05Co0.95Mn0.05O3/(x)WC composite. This study shows promise to design thermoelectric composites with the desired kappa ph considering the elastic properties between the phases.
