Proceedings of MATSUS Spring 2025 Conference (MATSUSSpring25)
DOI: https://doi.org/10.29363/nanoge.matsusspring.2025.678
Publication date: 16th December 2024
Electrolysis technologies such as water splitting, CO2 electroreduction, and other emerging reactions, present sustainable alternatives to power large industries such as transport (fuels, e.g., green hydrogen), manufacturing (chemical feedstock) and agriculture. These reactions rely on breaking molecules and reassembling them into desired products with sufficient activity and selectivity. Their viability relies on achieving sufficient performance in metrics in scalable processes.
Conventionally, this has been pursued by innovation at the catalyst level, for example, designing materials with target physicochemical properties. This is challenging, since catalysts change substantially during reaction, which precludes a predictive catalyst design. On the other hand, while water is arguably the main ingredient in water electrolysis, its role at the catalyst environment and in the electrolyte remains underexplored.
I will first present a new strategy to program catalyst reconstruction. Starting from the same precatalyst, this can either lead to unpredictable composition and structure or enable predictable catalysts with improved reliability. I will then focus on the liquid-side of the reaction. I will show examples on how control over water at catalyst interfaces can enable achieving distinct physicochemical properties leading to improved stability during water electrolysis and activity and selectivity during CO2 electroreduction.
To conclude, I will briefly overview sustainability issues in the scale up and path to market of these technologies.
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