Boosting production of C2+ products in a neutral electrolyte by Cu2O nano-networks in the CO2 electrochemical reduction

Copper-based electrocatalysts have garnered significant attention for their unique ability produce C 2+ products at industrial-level current densities in the electrochemical conversion of the CO 2 process. Maintaining a sufficient amount of Cu + species on the catalyst surface during the reaction is crucial for the efficient and stable reaction. Here, we develop Cu 2 O hollow networks that could maintain the morphology and surface Cu + sites during the reaction, showing excellent selectivity (81.7% at a partial current density of 266 mA cm −2 ) and stability toward C 2+ product generation in a flow cell. The strategies presented in this work provide valuable guidance for designing high-performance cuprous oxide electrocatalysts targeting C 2+ products.