RT Journal Article
T1 Enhancing the Electrochemical Performance in Symmetrical Solid Oxide Cells through Nanoengineered Redox-Stable Electrodes with Exsolved Nanoparticles
A1 Zamudio-García, Javier
A1 Porras-Vázquez, José Manuel
A1 Ramírez-Losilla, Enrique
A1 Marrero-López, David
K1 Pirólisis
AB Symmetrical solid oxide cells (SSOCs) have recently gained significant attention for their potential in energyconversion due to their simplified cell configuration, cost-effectiveness, and excellent reversibility. However, previous research effortshave mainly focused on improving the electrode performance of perovskite-type electrodes through different doping strategies,neglecting microstructural optimization. This work presents novel approaches for the nanostructural tailoring of(La0.8Sr0.2)0.95Fe1−xTixO3−δ (LSFTx, x = 0.2 and 0.4) electrodes using a single-step spray-pyrolysis deposition process. Byincorporating these electrodes into a Ce0.9Gd0.1O1.95 (CGO) porous backbone or employing a nanocomposite architecture withnanoscale particle size, we achieved significant improvements in the polarization resistance (Rp) compared with traditional screenprintedelectrodes. To further boost the fuel oxidation performance, a Ni-doping strategy, coupled with meticulous microstructuraloptimization, was implemented. The exsolution of Ni nanoparticles under reducing conditions resulted in remarkable Rp values aslow as 0.34 and 0.11 Ω cm2 in air and wet H2 at 700 °C, respectively. Moreover, an electrolyte-supported cell with symmetricalelectrodes demonstrated a stable maximum power density of 617 mW cm−2 at 800 °C. These findings highlight the importance ofcombining electrode composition optimization with advanced morphology control in the design of highly efficient and durableSSOCs.
PB American Chemical Society
YR 2023
FD 2023-12-25
LK https://hdl.handle.net/10630/28683
UL https://hdl.handle.net/10630/28683
LA eng
NO Javier Zamudio-García, Jose M. Porras-Vázquez, Enrique R. Losilla, and David Marrero-López. Enhancing the Electrochemical Performance in Symmetrical Solid Oxide Cells through Nanoengineered Redox-Stable Electrodes with Exsolved Nanoparticles. ACS Applied Materials & Interfaces 2024 16 (1), 555-568 DOI: 10.1021/acsami.3c13641
DS RIUMA. Repositorio Institucional de la Universidad de Málaga
RD 4 mar 2026