RT Journal Article
T1 Engineering phase distribution in LSCF-CGO cathodes for enhanced electrochemical performance in SOFCs
A1 Dos-Santos-Gómez, Lucía
A1 Sánchez-Caballero, Abraham
A1 Porras-Vázquez, José Manuel
A1 Zamudio-García, Javier
A1 Ramírez-Losilla, Enrique
A1 Marrero-López, David
K1 Cátodos
K1 Materiales nanocompuestos
AB Composite cathodes combining a mixed ionic–electronic conductor with an oxygen-ion conductor are key for intermediate-temperature solid oxide fuel cells (IT-SOFCs), as they increase the electrochemically active area and mitigate thermal expansion mismatch with the electrolyte. However, conventional fabrication methods, such as simple powder mixing, often yield inhomogeneous phase distributions and involve multiple processing steps that hinder scalability. In this work, La0.6Sr0.4Co0.2Fe0.8O3-δ (LSCF) - Ce0.9Gd0.1O1.95 (CGO) composite cathodes are prepared by different routes, including conventional powder mixing, LSCF powders coated with CGO nanoparticles, CGO powders coated with LSCF nanoparticles and a co-synthetized nanocomposite obtained from a single precursor solution via the freeze-drying method. The electrodes are systematically characterized to correlate phase distribution and microstructure with electrochemical performance. The co-synthesized nanocomposite exhibits a significantly reduced particle size of 20 nm at 800 ºC, resulting in a polarization resistance of 0.08 Ω·cm2 at 700 ºC, compared to 0.22 Ω·cm2 for the powder-mixed electrode. Correspondingly, the power density of the cell employing the nanosized LSCF–CGO cathode increased by 37 % compared to the conventional electrode. These results demonstrate that freeze-drying provides a simple, scalable and effective synthesis route for high-performance LSCF–CGO nanocomposite cathodes, offering significant advantages over conventional preparation methods for IT-SOFC applications.
PB Elsevier
YR 2026
FD 2026
LK https://hdl.handle.net/10630/45352
UL https://hdl.handle.net/10630/45352
LA eng
NO Lucía dos Santos-Gómez, Abraham Sánchez-Caballero, José Manuel Porras-Vázquez, Javier Zamudio-García, Enrique R. Losilla, David Marrero-López, Engineering phase distribution in LSCF-CGO cathodes for enhanced electrochemical performance in SOFCs, Journal of the European Ceramic Society, Volume 46, Issue 7, 2026, 118111, ISSN 0955-2219, https://doi.org/10.1016/j.jeurceramsoc.2025.118111.
NO Funding for open access charge: Universidad de Málaga / CBUA
DS RIUMA. Repositorio Institucional de la Universidad de Málaga
RD 27 feb 2026