Many studies focused on the effects of the catalyst particle size, morphology, nano-structuring, support, alloying and porosity, on the CO2RR efficiency. However, synthetic processes to prepare the catalytic materials are often challenging and costly to scale up. Furthermore, materials were often tested in simple H-cells that are limited by the slow mass transfer of CO2 in the liquid electrolyte and are not relevant for future commercialization. It is therefore important to introduce up-scalable fabrication approaches for the catalyst, allowing for cost-efficiency and high performance, while testing the materials in scalable flow-reactors.