Szczegóły publikacji
Opis bibliograficzny
Designing high-performance $Yb(Mg,Zn)_2(Bi,Sb)_2$ Zintls for power generation through anion framework engineering / Kushal Mehrotra, Andrei Novitskii, Wenhao Zhang, Jayachandran Babu, Oleksandr CHERNIUSHOK, Taras PARASHCHUK, Takao Mori // Chemical Engineering Journal ; ISSN 1385-8947 . — 2026 — vol. 531 art. no. 173035, s. 1–10. — Bibliogr. s. 8–10, Abstr. — Publikacja dostępna online od: 2026-02-11
Autorzy (7)
- Mehrotra Kushal
- Novitskii Andrei
- Zhang Wenhao
- Babu Jayachandran
- AGHCherniushok Oleksandr
- AGHParashchuk Taras
- Mori Takao
Słowa kluczowe
Dane bibliometryczne
| ID BaDAP | 166284 |
|---|---|
| Data dodania do BaDAP | 2026-03-13 |
| Tekst źródłowy | URL |
| DOI | 10.1016/j.cej.2026.173035 |
| Rok publikacji | 2026 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Creative Commons | |
| Czasopismo/seria | Chemical Engineering Journal |
Abstract
Balancing electronic and phonon transport remains a central challenge for Zintl thermoelectrics. Here we show that complex anion framework engineering in Image 1001 provides concurrent control over both. Progressive substitution of Mg by Zn tunes the anion -states at the -point, driving valence-band -orbital overlap and thereby enhancing weighted mobility and the power factor toward the Zn-rich end (). In parallel, alloy disorder introduces strong phonon point-defect scattering, suppressing lattice thermal conductivity. Therefore, the optimal performance is realized at the intermediate composition , despite a modest power factor at 773 K (µ), the low () yields a peak at 773 K. We further demonstrate device-level feasibility by fabricating a two-pair module using Image 1002 as the p-type leg, achieving an efficiency of at a temperature difference of 420 K. These results establish anion framework engineering as a practical route to couple band convergence with phonon scattering and deliver competitive, environmentally acceptable thermoelectric performance.
