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Türk, Hanna ; Schmidt, Franz-Philipp ; Götsch, Thomas ; Girgsdies, Frank ; Hammud, Adnan ; Ivanov, Danail ; Vinke, Izaak C. ; de Haart, L. G. J. (Bert) ; Eichel, Rudiger-A. ; Reuter, Karsten ; Schlögl, Robert ; Knop-Gericke, Axel ; Scheurer, Christoph ; Lunkenbein, Thomas:
Complexions at the Electrolyte/Electrode Interface in Solid Oxide Cells.
In: Advanced Materials Interfaces.
Bd. 8
(2021)
Heft 18
.
- 2100967.
ISSN 2196-7350
DOI: https://doi.org/10.1002/admi.202100967
Abstract
Rapid deactivation presently limits a wide spread use of high-temperature solid oxide cells (SOCs) as otherwise highly efficient chemical energy converters. With deactivation triggered by the ongoing conversion reactions, an atomic-scale understanding of the active triple-phase boundary between electrolyte, electrode, and gas phase is essential to increase cell performance. Here, a multi-method approach is used comprising transmission electron microscopy and first-principles calculations and molecular simulations to untangle the atomic arrangement of the prototypical SOC interface between a lanthanum strontium manganite (LSM) anode and a yttria-stabilized zirconia (YSZ) electrolyte in the as-prepared state after sintering. An interlayer of self-limited width with partial amorphization and strong compositional gradient is identified, thus exhibiting the characteristics of a complexion that is stabilized by the confinement between two bulk phases. This offers a new perspective to understand the function of SOCs at the atomic scale. Moreover, it opens up a hitherto unrealized design space to tune the conversion efficiency.
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| Publikationsform: | Artikel in einer Zeitschrift |
|---|---|
| Begutachteter Beitrag: | Ja |
| Zusätzliche Informationen: | WOS:000689640100001 |
| Institutionen der Universität: | Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften > Fachgruppe Chemie |
| Titel an der UBT entstanden: | Nein |
| Themengebiete aus DDC: | 500 Naturwissenschaften und Mathematik > 540 Chemie |
| Eingestellt am: | 13 Jun 2025 07:29 |
| Letzte Änderung: | 13 Jun 2025 07:29 |
| URI: | https://eref.uni-bayreuth.de/id/eprint/93686 |