Proceedings of MATSUS Spring 2025 Conference (MATSUSSpring25)
DOI: https://doi.org/10.29363/nanoge.matsusspring.2025.458
Publication date: 16th December 2024
In-situ techniques are key to elucidate the structure of the electrochemical interface, the active sites, and the reaction mechanisms of electrocatalytic reactions for sustainable energy conversion and storage. This talk will focus on the combination of electrochemical methods and different in-situ and operando surface-sensitive techniques including vibrational spectroscopy and synchrotron-based characterisation to understand and tune the structure-activity and structure-selectivity relationships for different electrocatalytic reactions of interest to produce renewable fuels and chemicals. These reactions include oxygen electrocatalysis for green hydrogen production and utilisation and the electrosynthesis of green fuels and value-added chemicals using electrochemical carbon dioxide, nitrate, and methane conversion.
First, I will present our work toward understanding and tuning the structure-activity relations on well-defined Pt-based surfaces for oxygen electrocatalysis by combining electrochemical methods, ex-situ surface science characterisation and in-situ grazing incidence X-ray diffraction [1,2]. Then, I will show our model studies on well-defined Cu-based electrocatalysts to assess the interfacial properties of the electrochemical CO2 and CO reduction reactions [3]. We have investigated new methods to evaluate and tailor the facet distribution on Cu-based catalysts [4]. Finally, I will discuss some approaches toward the in-situ investigations of the reaction mechanisms for the electrochemical nitrate reduction to produce ammonia and the co-reduction of CO2 and nitrates to produce sustainable fertilisers such as urea.
This project has received funding from the European Union Horizon Europe research and innovation program under grant agreement No 101115204.
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