Membrane electrode assembly design to prevent CO2 crossover in CO2 reduction reaction electrolysis

Abstract

To reach a net-zero energy economy by 2050, it is critical to develop negative emission technologies, such as CO2 reduction electrolyzers, but these devices still suffer from various issues including low utilization of CO2 because of its cross-over from the cathode to the anode. This comment highlights the recent innovative design of membrane electrode assembly, utilizing a bipolar membrane and catholyte layer that blocks CO2 cross-over and enables high CO2 single-pass utilization.