Enhanced Ethanol Production from CO 2 Electroreduction at Micropores in Nitrogen‐Doped Mesoporous Carbon

Efficient formation of valuable multicarbon products in CO 2 electrochemical reduction is challenging, owing to the difficulty of C−C coupling. Medium micropores embedded in the channel walls of nitrogen‐doped ordered mesoporous carbon are found to capably promote ethanol production from CO 2 electroreduction. By scaling up the medium micropore content, the yield of ethanol is increased to 2.3 mmol g cat −1  h −1 , far outperforming previously reported state‐of‐the‐art electrocatalysts. The intrinsically higher activity is attributed to the desolvation effect induced by the medium micropores, facilitating the coupling reaction of C 1 intermediates to form ethanol.