RT Conference Proceedings
T1 Electrochemical evaluation of Re-doped SrFeO3-δ electrodes for SOFCs
A1 Sánchez Caballero, Abraham
A1 García-Plaza, Miguel Ángel
A1 Porras-Vázquez, José Manuel
A1 dos Santos-Gómez, Lucía
A1 Zamudio-García, Javier
A1 Marrero-López, David
K1 Pilas de combustible
K1 Electroquímica
AB Solid oxide fuel cells (SOFCs) offer high efficiency for clean energy conversion, but their high operating temperatures pose technical challenges. The development of symmetrical electrodes with improved electrochemical properties can enable more practical and cost-effective SOFC systems [1].In this study, Sr0.95Fe1-xRexO3-δ (x = 0, 0.05, 0.1, 0.2, 0.3) perovskite-type materials were synthesized via the freeze-dried precursor method, aiming to enhance their structural stability and electronic conductivity under both oxidizing and reducing conditions. The electrodes were then deposited onto LSGM electrolytes using spray pyrolysis, ensuring uniform coverage and good adherence [2].X-ray diffraction confirmed phase purity and the stabilization of the cubic structure with Re substitution. Scanning electron microscopy revealed reduced grain size with increased Re content. Electrochemical impedance spectroscopy showed that the composition with 20% Re offered the lowest polarization resistance and best overall performance.A single SOFC incorporating the Sr0.95Fe0.8Re0.2O3-δ electrode was fabricated and tested, demonstrating the suitability of this material for symmetrical SOFC operation.
YR 2025
FD 2025
LK https://hdl.handle.net/10630/40791
UL https://hdl.handle.net/10630/40791
LA eng
NO Ministerio de Ciencia, Innovación e Universidades
NO PID2021-126009OB-I00
NO TED2021-129836B-I00
DS RIUMA. Repositorio Institucional de la Universidad de Málaga
RD 21 ene 2026