Szczegóły publikacji
Opis bibliograficzny
Controlled exsolution-dissolution in double perovskites enables symmetrical-capable high-performance SOFC electrodes / Jakub LACH, Kun ZHENG, Cristian Radu, Marcin Kryński, Michał GOGACZ, Yihan Ling, Alicja Klimkowicz, Marcin Łapiński // Chemical Engineering Journal ; ISSN 1385-8947 . — 2026 — vol. 532 art. no. 174527, s. 1-18. — Bibliogr. s. 16-18, Abstr. — Publikacja dostępna online od: 2026-02-23
Autorzy (8)
- AGHLach Jakub
- AGHZheng Kun
- Radu Cristian
- Kryński Marcin
- AGHGogacz Michał
- Ling Yihan
- Klimkowicz Alicja
- Łapiński Marcin
Słowa kluczowe
Dane bibliometryczne
| ID BaDAP | 166285 |
|---|---|
| Data dodania do BaDAP | 2026-03-13 |
| Tekst źródłowy | URL |
| DOI | 10.1016/j.cej.2026.174527 |
| Rok publikacji | 2026 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Creative Commons | |
| Czasopismo/seria | Chemical Engineering Journal |
Abstract
In situ exsolution has emerged as a powerful strategy for tailoring fuel electrode catalysts in solid oxide fuel cells (SOFCs), yet its integration with reversible exsolution-dissolution processes and its application to symmetrical-capable electrode design remain largely unexplored. Here, we demonstrate controlled exsolution-dissolution in nanofiber double perovskites as a rational route to engineer high-performance SOFC electrodes operable in both symmetrical and anode-supported configurations. Sm0.9Ba0.9Mn1.8−xFexCo0.1Ni0.1O5+δ nanofiber perovskites enable composition-dependent control of nanoparticle evolution. Under reducing conditions, socketed Co–Ni–Fe alloy nanocatalysts exsolve and partially embed into the perovskite lattice, while oxidation induces their transformation into Fe3−x−yNixCoyO4-type hollow core–shell nano-oxides via a Kirkendall-type mechanism. The nanofiber architecture promotes smaller and more densely distributed nanoparticles compared to powders, enhancing catalytic activity and redox stability. The optimized composite electrode delivers a low polarization resistance of 0.046 Ω cm2 at 800 °C. Anode-supported cells achieve a peak power density of 1112 mW cm−2 at 850 °C and 877 mW cm−2 at 800 °C, while symmetrical cells deliver 816 mW cm−2 at 800 °C with stable operation. This work establishes controlled exsolution-dissolution as a versatile platform for designing symmetrical-capable high-performance SOFC electrodes and highlights hollow core–shell nanostructure engineering as a powerful strategy for durable solid oxide electrochemical systems.
