160962 20251017144550.0 doi 10.1039/d4ta08962f sideral 144145 ART-2025-144145 eng Riaz, Adeel High performance La₂NiO_4+<i>δ</i> oxygen and Ni–Ce_0.9Gd_0.1O_{2−<i>δ</i>} fuel electrodes for thin film reversible solid oxide cells 2025 Access copy available to the general public Unrestricted Thin film reversible solid oxide cells (TF-rSOCs) are attracting a great deal of interest as they promise to operate at much lower temperatures (400–600 °C) than state-of-the-art commercial fuel electrode-supported cells (600–800 °C). However, in all-ceramics TF-rSOCs the high polarization resistance of the electrodes limits the cell performance. To overcome this limitation, high performing oxygen and fuel electrodes were selected and their nanostructure was optimized. Thin nanoporous films of La2NiO4+δ were deposited as oxygen electrode by Pulsed Injection Metal Organic Chemical Vapor Deposition (PI-MOCVD) with different thickness. As for the fuel electrode, thin films of Ni–Ce0.9Gd0.1O2−δ (NiCGO) were deposited by Pulsed Laser Deposition (PLD) at various temperatures and pO2. The electrochemical activity of the oxygen and fuel electrodes was measured by Electrical Conductivity Relaxation (ECR) and Electrochemical Impedance Spectroscopy (EIS), respectively. The optimized electrodes were then deposited on a YSZ single crystal electrolyte and the cell was measured in fuel cell and electrolysis modes showing high performance with a power density of 70 mW cm−2 at 0.7 V and a current density of −44 mA cm−2 at 1.3 V at a low operating temperature of 600 °C. These results demonstrate the potential of using these materials as electrodes in TF-rSOCs. info:eu-repo/grantAgreement/ES/DGA/T02-23R info:eu-repo/grantAgreement/EC/H2020/101017709/EU/Thin Film Reversible Solid Oxide Cells for Ultracompact Electrical Energy Storage/EPISTORE This project has received funding from the European Union’s Horizon 2020 research and innovation program under grant agreement No H2020 101017709-EPISTORE info:eu-repo/grantAgreement/EC/H2020/824072/EU/Energy HarveStorers for Powering the Internet of Things/HARVESTORE This project has received funding from the European Union’s Horizon 2020 research and innovation program under grant agreement No H2020 824072-HARVESTORE info:eu-repo/grantAgreement/ES/AEI/MICNN/PID2022-137626OB-C31 info:eu-repo/semantics/openAccess by-nc https://creativecommons.org/licenses/by-nc/4.0/deed.es info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Sirvent, Juande Zueco-Vincelle, Juan Buzi, Fjorelo Panisset, Silvère Stangl, Alexander Rapenne, Laetitia Baiutti, Federico Mermoux, Michel Laguna-Bercero, Miguel Angel (orcid)0000-0002-7819-8956 Tarancón, Albert Burriel, Mónica (2025), [13 pp.] J. mater. chem. A Journal of Materials Chemistry A 2050-7488 High Performance La2NiO4+d Oxygen and Ni-Ce0.9Gd0.1O2-d Fuel Electrodes for Thin Film Reversible Solid Oxide Cells https://zenodo.org/records/15402718 4772266 http://zaguan.unizar.es/record/160962/files/texto_completo.pdf Versión publicada 2802345 http://zaguan.unizar.es/record/160962/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:160962 articulos driver 2025-10-17-14:11:39 ARTICLE