Proceedings of MATSUS Spring 2024 Conference (MATSUS24)
DOI: https://doi.org/10.29363/nanoge.matsus.2024.124
Publication date: 18th December 2023
Electrochemical reduction of CO2 presents an attractive way to store renewable energy in chemical bonds in a potentially carbon-neutral way. Novel catalyst screening for this electrochemical process is crucial in improving selectivity, stability and required mass loadings. To date, however, catalyst testing occurs mainly on a 1-by-1 basis that strains quick identification of potential candidates. While advances in combinatorial screening have been presented, most of these rely on system designs that do not resemble representative conditions in lab-scale or industrial scales. To bridge this gap in benchmarking, we developed a lab-scale electrolyzer to screen 16 combinations of catalysts at the same time, using infrared thermography as the proxy for electrochemical activity. To showcase the effectivity of this method, we perform test runs on blank ink and sputtered catalyst samples, and subsequently analyse the spatial effects in our system. Subsequently, we study different catalyst loadings of copper for hydrocarbon production. Finally, we compare different catalyst precursors for the catalyst particles. The method shows an improved accuracy over existing solutions while employing a much more adequate system architecture.
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