2026-06-04T22:38:20Zhttps://riuma.uma.es/rest/oai/requestoai:riuma.uma.es:10630/467672026-06-01T23:46:23Zcom_10630_2254col_10630_37953
RIUMA. Repositorio Institucional de la Universidad de Málaga
author
Caizán-Juanarena, Leire
author
Zamudio-García, Javier
author
Sánchez-Caballero, Abraham
author
Santos-Gómez, Lucía dos
author
Marrero-López, David
2026-06-01T10:56:21Z
2026
Leire Caizán-Juanarena, Javier Zamudio-García, A. Sánchez-Caballero, Lucía dos Santos-Gómez, David Marrero-López, Interfacial active layers for redox-stable symmetrical solid oxide fuel cells, Ceramics International, Volume 52, Issue 15, Part A, 2026, Pages 27903-27911, ISSN 0272-8842, https://doi.org/10.1016/j.ceramint.2026.04.322
0272-8842
https://hdl.handle.net/10630/46767
10.1016/j.ceramint.2026.04.322
The incorporation of active layers has become an effective strategy to reduce interfacial polarization losses in solid oxide fuel cells (SOFCs). However, the development of redox-stable active layers capable of operating under both oxidizing and reducing atmospheres in symmetrical cell configurations remains challenging. In this work, we develop a redox-stable Sr0.98Fe0.75Ti0.25O3-δ-Ce0.9Gd0.1O1.95 (SFT-CGO) nanocomposite that maintains its structural and chemical integrity during cycling between air and hydrogen atmospheres. When deposited via spray-pyrolysis as a nanostructured active layer, the composite forms a dense and homogeneous interface with the electrolyte, facilitating charge transfer and oxide-ion transport while increasing the density of electrochemically active surface pathways. This optimized interface significantly reduces the polarization resistance under both anodic and cathodic operation. As a result, a symmetrical electrolyte-supported cell incorporating the active layer delivers a peak power density of 630 mW cm−2 at 800 °C, compared to 380 mW cm−2 for the reference cell without the active layer. These results demonstrate that a redox-stable nanocomposite interlayer offers a scalable approach to improving interfacial properties and overall performance in symmetrical solid oxide cells.
eng
Attribution 4.0 International
Química inorgánica
Química del estado sólido
Materiales nanoestructurados
Materiales nanocompuestos
Reacciones químicas
Oxidorreducción
Pirólisis
Interfacial active layers for redox-stable symmetrical solid oxide fuel cells
journal article
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
URL
https://riuma.uma.es/bitstreams/e389e5ee-9082-449e-ace8-51891a2fbb4f/download
File
MD5
0651704690f4f1824f751ee07316d400
6069108
application/pdf
1-s2.0-S0272884226019462-main.pdf