A5041828151- Electronic and Structural Properties of Oxides
- Advancements in Solid Oxide Fuel Cells
- Catalytic Processes in Materials Science
- Magnetic and transport properties of perovskites and related materials
- Electrocatalysts for Energy Conversion
- Catalysis and Oxidation Reactions
- Thermal Expansion and Ionic Conductivity
- Catalysts for Methane Reforming
- Advanced battery technologies research
- Ferroelectric and Piezoelectric Materials
Consejo Superior de Investigaciones Científicas
2022-2024
IMDEA Energy Institute
2024
ETH Zurich
2024
Universidad Rey Juan Carlos
2024
Instituto de Tecnología Química
2022-2024
Universitat Politècnica de València
2022-2024
Abstract Nanoparticle exsolution is a powerful technique for functionalizing redox oxides in energy applications, particularly at high temperatures. It shows promise solid oxide fuel cells and electrolyzers. However, of other chemistries like metal not well studied, the mechanism poorly understood. This work explores PrBa1-xCo2O6-δ (x=0, 0.05, 0.1, 0.15) double perovskites, practiced electrodes Proton Ceramic Fuel Cells (PCFCs) Electrolyzers (PCEs). Oxide aimed boosting electrocatalytic...
The intermittent nature of renewable energy resources makes imperative the development efficient storage technologies. Solid oxide electrolysis cells (SOECs) are a promising alternative to conversion devices. SOECs can play an important role in control greenhouse gases by improving processes such as CO2 electrolysis. In order enhance SOEC performance, exsolution metal nanoparticles is emerging for catalytic surface functionalization electrodes, preventing sintering issues related classical...
Exsolution has emerged as a promising method for generating metallic nanoparticles, whose robustness and stability outperform those of more conventional deposition methods, such impregnation. In general, exsolution involves the migration transition metal cations, typically perovskites, under reducing conditions, leading to nucleation well-anchored nanoparticles on oxide surface with particular properties. There is growing interest in exploring alternative methods that do not rely...
Abstract Nanoparticle exsolution has emerged as a versatile method to functionalize oxides with robust metallic nanoparticles for catalytic and energy applications. By modifying certain external parameters during thermal reduction (temperature, time, reducing gas), some morphological and/or compositional properties of the exsolved can be tuned. Here, it is shown how application high pressure (<100 bar H 2 ) enables control ternary FeCoNi alloyed from double perovskite. affects lattice...
This work unveils the mechanism of FeCoNi alloy reversible exsolution from double perovskites via in situ synchrotron-based NAP-XPS and time-resolved XRD.
Double perovskite oxides of the Sr2Fe1.5Mo0.5O6-δ class are promising electrodes for Solid Oxide Fuel Cells (SOFCs) and Electrolyzers (SOECs) due to their outstanding electrochemical properties durability. Additionally, physicochemical can be tuned by B-site cation doping, namely, partially substituting Fe cations with other transition metals such as Ni, Co, Mn, or Cu. This also allows grain-surface functionalization metallic alloyed nanocatalysts upon reduction driven exsolution phenomena,...