RT Journal Article
T1 Symmetrical solid oxide fuel cells based on titanate nanocomposite electrodes
A1 Zamudio-García, Javier
A1 Dos-Santos-Gómez, Lucía
A1 Porras-Vázquez, José Manuel
A1 Losilla, Enrique R.
A1 Marrero-López, David
K1 Materiales nanocompuestos
K1 Electrodos
AB Nanocomposite electrodes of (Sr0.7Pr0.3)0.95TiO3±δ−Ce0.9Gd0.1O1.95 are directly prepared by spray-pyrolysis deposition on Zr0.82Y0.16O1.92 electrolytes and their properties are compared with those obtained by the traditional screen-printing powder method. The structural, microstructural and electrical characteristics are investigated for their potential use as both cathode and anode in Solid Oxide Fuel Cells. The nanocomposite electrodes with reduced particle size ∼30 nm achieved a polarization resistance at 700 ºC of 0.50 and 0.46 Ω cm2 in air and pure H2, respectively, outperforming those obtained for the analogous screen-printed electrodes with particle size of 450 nm, i.e. 4.8 and 3.9 Ω cm2, respectively. An electrolyte-supported cell with symmetrical electrodes reached a maximum and stable power density of 354 mW cm-2 at 800 ºC. These results demonstrate that the performance of electrode materials with modest electrochemical properties but high phase stability, such as doped-SrTiO3, can be highly improved by preparing nanocomposite electrodes directly on the electrolyte surface.
PB Elsevier
YR 2022
FD 2022-11-26
LK https://hdl.handle.net/10630/26401
UL https://hdl.handle.net/10630/26401
LA eng
NO Zamudio-García, J., dos Santos-Gómez, L., Porras-Vázquez, J. M., Losilla, E. R., & Marrero-López, D. (2023). Symmetrical solid oxide fuel cells based on titanate nanocomposite electrodes. Journal of the European Ceramic Society, 43(4), 1548-1558.
NO This work was funded by PID2021–126009OB-I00 and PID2019–110249RB-I00 (Ministerio de Ciencia, Innovación y Universidades) and UMA18-FEDERJA-033 (Junta de Andalucia, Spain/FEDER) research projects. JZG thanks the Ministerio de Ciencia, Innovación y Universidades for his FPU grant (FPU17/02621.  Funding for open access charge: Universidad de Málaga/CBUA..
DS RIUMA. Repositorio Institucional de la Universidad de Málaga
RD 20 ene 2026