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This research project focuses on the development of advanced ceramic materials for intermediate-temperature solid oxide fuel cells (IT-SOFCs) and for hydrogen production via solar photocatalysis. Hydrogen production and its subsequent use as a clean energy source in highly efficient devices (e.g., IT-SOFCs) align with the objectives set out in the EU's Horizon 2020 program and the Spanish Strategy for Science, Technology and Innovation. One of the main tasks of this project is the preparation of a wide range of inorganic compounds that stand out for their transport properties (mixed conductors based on pyrochlores A2-xAxB2O7 and La3NbO7, proton conductors derived from Ln6MoO12) and photocatalytic properties (semiconductors such as TiO2, SrTiO3, Ga and Zn oxynitrides, and heterostructures). The synthesis of these materials will be carried out using different precursor methods (lyophilization, sol-gel, microwave-assisted hydrothermal) to obtain homogeneous ceramic or powder samples. Their structural and microstructural characterization will be performed using a range of methods such as X-ray diffraction, SEM, TEM, XPS, BET, grain size analysis, and chemisorption. Another important task of the project is the physicochemical study of the synthesized materials, with the aim of identifying the most promising compounds for subsequent use as components of SOFC fuel cells and photocatalysts. The construction and commissioning of several in-situ spectroscopic measurement systems and stoichiometry loss determination systems are proposed. These will provide key information on the processes involved in photocatalysis and the thermodynamics of reactions between defects at high temperatures.
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This research project is focused on the development of advanced ceramic materials for Intermediate Temperature Solid Oxide Fuel Cell (IT-SOFC) and for hydrogen production by the water-splitting process. The hydrogen production and its subsequent use as a clean energy source in highly efficient devices (ie IT-SOFC) match well to the objectives declared in Horizon 2020 Program of EU and the Spanish Science and Technology and Innovation Strategy. As one of the main tasks of this project we propose the preparation of a large number of inorganic compounds that stand out for their properties on transport (mixed conductor based on pyrochlores A2-xAxB2O7 and La3NbO7, protonic conductors derived from Ln6MoO12) and on photocatalysis (TiO2, SrTiO3, GA and Zn oxynitrides, heterostructures). The synthesis of these materials will be performed by several precursor methods (freeze-drying, sol-gel, microwave assisted hydrothermal) to obtain homogenous ceramic or powder samples, which structural and microstructural characterization will be carried out using a large number of methods as XRD, SEM, TEM, We propose the design, construction and start up of several jigs for in-situ spectroscopic measurements and the determination of stoichiometric loss, which will provide us key information on the processes involved in photocatalysis and the thermodynamic of the reactions between defects at high temperatures.
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