Szczegóły publikacji
Opis bibliograficzny
Designing high-performance quasi-symmetrical solid oxide cells with a facile chemical modification strategy for $Sr_{2}Fe_{2−x}W_{x}O_{6−\delta}$ ferrites electrodes with in situ exsolution of nanoparticles / Kun ZHENG, Jakub LACH, Paweł Czaja, Michał GOGACZ, Patryk CZACH, Agnieszka BRZOZA-KOS, Piotr WINIARZ, Jie Luo // Journal of Power Sources ; ISSN 0378-7753. — 2023 — vol. 587 art. no. 233707, s. 1–15. — Bibliogr. s. 14–15, Abstr. — Publikacja dostępna online od: 2023-10-13. — K. Zheng - dod. afiliacja: AGH Centre of Energy
Autorzy (8)
Słowa kluczowe
Dane bibliometryczne
| ID BaDAP | 149513 |
|---|---|
| Data dodania do BaDAP | 2023-12-12 |
| Tekst źródłowy | URL |
| DOI | 10.1016/j.jpowsour.2023.233707 |
| Rok publikacji | 2023 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Creative Commons | |
| Czasopismo/seria | Journal of Power Sources |
Abstract
The chemical modification of perovskites is one of the most effective design strategies for electrode materials for solid oxide cells. In this work, the tungsten doping in Sr2Fe2−xWxO6−δ shows a significant impact on their physicochemical properties, and it leads to a substantial change of electrochemical properties in the air and reducing conditions, with Sr2Fe1.8W0.2O6−δ (Rp = 0.06 Ω cm2 at 800 °C stable for 100 h in air) and Sr2Fe1.6W0.4O6−δ (Rp = 0.56 Ω cm2 at 800 °C over 100 h in 5 vol% H2/Ar) being the best air and fuel electrode candidates, respectively. We have proposed an attractive design of high-performance quasi-symmetrical solid oxide cells with 80%Sr2Fe1.8W0.2O6−δ+20%GDC | LSGM | 80%Sr2Fe1.6W0.4O6−δ+20%GDC, demonstrating excellent power outputs (874 mW cm−2 at 850 °C in wet H2) and good current density of 743 mA cm−2 at 1.5 V in electrolysis mode at 750 °C. A good performance of 451 mW cm−2 was also recorded in wet CH4 at 800 °C. The in situ exsolved metallic iron nanoparticles decorated on the Sr2Fe1.6W0.4O6−δ anode contribute to the excellent electrochemical performance of cells. This study provides a successful scenario for designing high-performance symmetrical solid oxide cells with a facile chemical modification strategy for ferrites electrodes with in situ exsolution of nanoparticles.
