The unique redox, electronic and ionic properties of non-stoichiometric oxides, including ceria, transition-metal oxides and perovskites, make these materials highly attractive not only for catalysis but also for advanced energy conversion technologies. Our research explores the fundamental relationships between composition, structure, redox behaviour, electronic properties and catalytic performance across different classes of functional oxides. This knowledge is used to design and develop materials for electrochemical energy conversion systems, including solid oxide fuel cells and solid-state electrochemical cells. A major research direction is also dedicated to green hydrogen technologies. We investigate catalytic materials and processes for hydrogen production from renewable resources, including solar-derived pathways and biogas, as well as its use as a clean energy vector for the decarbonisation of energy-intensive industrial processes and the sustainable production of fuels and chemicals. By combining catalysis, materials chemistry and electrochemistry, we aim to understand the fundamental mechanisms governing energy conversion processes and translate this knowledge into innovative materials and technologies for a more sustainable energy system. Our research follows a strongly interdisciplinary approach and is carried out in close collaboration with leading national and international research institutions, including Politecnico di Torino, Politecnico di Milano and the Massachusetts Institute of Technology (MIT).