Szczegóły publikacji
Opis bibliograficzny
Co-free triple perovskite $La_{1.5}Ba_{1.5}Cu_{3}O_{7±\delta}$ as a promising air electrode material for solid oxide fuel cells / Keyun LI, Anna Niemczyk, Konrad ŚWIERCZEK, Anna STĘPIEŃ, Yevgeniy Naumovich, Juliusz DĄBROWA, Marek ZAJUSZ, Kun ZHENG, Bogdan Dabrowski // Journal of Power Sources ; ISSN 0378-7753 . — 2022 — vol. 532 art. no. 231371, s. 1-11. — Bibliogr. s. 9-11, Abstr. — Publikacja dostępna online od: 2022-03-31. — K. Świerczek, K. Zheng - dod. afiliacja: AGH Centre of Energy
Autorzy (9)
- AGHLi Keyun
- Niemczyk Anna
- AGHŚwierczek Konrad
- AGHStępień Anna
- Naumovich Yevgeniy
- AGHDąbrowa Juliusz
- AGHZajusz Marek
- AGHZheng Kun
- Dąbrowski Bogdan
Słowa kluczowe
Dane bibliometryczne
| ID BaDAP | 139799 |
|---|---|
| Data dodania do BaDAP | 2022-04-14 |
| Tekst źródłowy | URL |
| DOI | 10.1016/j.jpowsour.2022.231371 |
| Rok publikacji | 2022 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Czasopismo/seria | Journal of Power Sources |
Abstract
La1.5Ba1.5Cu3O7±δ (LBCu) complex oxide is evaluated as a Co-free candidate air electrode material for reversible Solid Oxide Cells (rSOC). LBCu is structurally and thermomechanically compatible with La0.8Sr0.2Ga0.8Mg0.2O3-δ (LSGM) electrolyte, maintains the layered (tripled along the c-axis) perovskite-related crystal structure at high temperatures, and shows reduced chemical expansion with the faster elongation ongoing perpendicular to the a-b plane. Its total thermal expansion is found to be moderate comparing to the Co-based perovskites. The onset temperature of the oxygen release from the material is low, ca. 300 °C in air, however, up to 800 °C the average oxidation state of copper remains above +2 in the oxidative atmospheres. The total electrical conductivity of LBCu correlates with the oxygen content, with the maximum of about 55–75 S cm−1 at ca. 350 °C in air. Functional LBCu air electrodes can be manufactured at temperatures as low as 750–800 °C, with exceptionally low (for Co-free material) polarization resistance values of 0.019 Ω cm2 at 750 °C, 0.041 Ω cm2 at 700 °C, and 0.090 Ω cm2 at 650 °C. Relatively high power output, ca. 162 mW cm−2 at 600 °C, and above 458 mW cm−2 at 750 °C is obtained for the laboratory-scale LSGM-supported cell.
