RT Journal Article
T1 Symmetric electrodes for solid oxide fuel cells based on Zr-doped SrFeO3-δ
A1 Dos-Santos-Gómez, Lucía
A1 Compana, José Manuel
A1 Bruque-Gámez, Sebastián
A1 Losilla, Enrique R.
A1 Marrero-López, David
K1 Cátodos
AB SrFe1-xZrxO3-d (0<x<0.35) compounds have been investigated as potential symmetric electrodematerials for solid oxide fuel cells (SOFCs). The crystal structure changes from orthorhombic to cubicperovskite when iron is partially replaced by Zr4+. The compounds with Zr-content x>0.1 are structurallystable under reducing atmospheres up to 800 ºC. The oxygen nonstoichiometry and thermalexpansion coefficients of the compounds are determined by thermogravimetric analysis and hightemperature X-ray diffraction respectively, and both decrease with increasing Zr-content, indicating thatZr4+ improves the redox stability of SrFeO3-d. Total conductivity and area specific resistance (ASR) aredetermined in air and 5% H2-Ar. SrFe0.75Zr0.25O3-d exhibits ASR values as low as 0.1 and 0.17 U cm2 in airand 5% H2-Ar at 750 ºC respectively. The performance of these compounds as both cathode and anodematerials is tested in a single cell with 400 mm-thick La0.8Sr0.2Ga0.8Mg0.2O3-d (LSGM) electrolyte, reachinga maximum power density of 425 mW cm-2 at 800 ºC.
PB Elsevier
YR 2015
FD 2015
LK https://hdl.handle.net/10630/36944
UL https://hdl.handle.net/10630/36944
LA eng
NO L. dos Santos-Gómez, J.M. Compana, S. Bruque, E.R. Losilla, D. Marrero-López, Symmetric electrodes for solid oxide fuel cells based on Zr-doped SrFeO3−δ, Journal of Power Sources, Volume 279, 2015, Pages 419-427, ISSN 0378-7753, https://doi.org/10.1016/j.jpowsour.2015.01.043. (https://www.sciencedirect.com/science/article/pii/S0378775315000440)
DS RIUMA. Repositorio Institucional de la Universidad de Málaga
RD 20 ene 2026