RT Journal Article
T1 Novel microstructural strategies to enhance the electrochemical performance of La0.8Sr0.2MnO3-δ cathodes
A1 Dos-Santos-Gómez, Lucía
A1 Losilla, Enrique R.
A1 Martín, Francisco
A1 Ramos-Barrado, José Ramón
A1 Marrero-López, David
K1 Pilas de combustible
AB Novel strategies based on spray-pyrolysis deposition are proposed to increase the triple-phase boundary (TPB) of La0.8Sr0.2MnO3−δ (LSM) cathodes in contact with yttria-stabilized zirconia (YSZ) electrolyte: (i) nanocrystalline LSM films deposited on as-prepared YSZ surface; (ii) the addition of poly(methyl methacrylate) microspheres as pore formers to further increase the porosity of the film cathodes; and (iii) the deposition of LSM by spray pyrolysis on backbones of Zr0.84Y0.16O1.92 (YSZ), Ce0.9Gd0.1O1.95 (CGO), and Bi1.5Y0.5O3−δ (BYO) previously fixed onto the YSZ. This last method is an alternative to the classical infiltration process with several advantages for large-scale manufacturing of planar solid oxide fuel cells (SOFCs), including easier industrial implementation, shorter preparation time, and low cost. The morphology and electrochemical performance of the electrodes are investigated by scanning electron microscopy and impedance spectroscopy. Very low values of area specific resistance are obtained, ranging from 1.4 Ω·cm2 for LSM films deposited on as-prepared YSZ surface to 0.06 Ω-cm2 for LSM deposited onto BYO backbone at a measured temperature of 650 °C. These electrodes exhibit high performance even after annealing at 950 °C, making them potentially suitable for applications in SOFCs at intermediate temperatures.
PB American Chemical Society
YR 2015
FD 2015
LK https://hdl.handle.net/10630/36951
UL https://hdl.handle.net/10630/36951
LA eng
NO L. dos Santos-Gómez, E. R. Losilla, F. Martín, J. R. Ramos-Barrado, and D. Marrero-López. Novel Microstructural Strategies To Enhance the Electrochemical Performance of La0.8Sr0.2MnO3−δ Cathodes. ACS Applied Materials & Interfaces 2015 7 (13), 7197-7205 DOI: 10.1021/acsami.5b00255
DS RIUMA. Repositorio Institucional de la Universidad de Málaga
RD 19 ene 2026