Relation between the catalytic efficiency, morphology and chemical state of Cu catalyst in high-rate CO2 conversion devices for low-carbon e

Large-scale utilization of electrochemical CO 2 conversion to value-added chemicals and artificial fuels requires high reaction rates (i.e. high current densities). This can be achieved using Cu catalyst in GDE (Gas Diffusion Electrode) flow electrolyzers, overcoming the mass transport limitations. While Cu catalyst behaviour in traditional cells is well described, it is not clear how this knowledge translates into the advanced GDEs configuration as this arrangement was proposed only very recently. In this proposal, we aim to fundamentally understand the relation between the catalytic efficiency and selectivity, local reaction environments, morphology and chemical state of Cu in GDEs at commercially-relevant current densities. This study will provide rational guidance for improving the performance of GDE based high-rate CO2 conversion devices for low-carbon economy.