Oxygen-Tolerant CO2 Electrocatalysis

The electrochemical carbon dioxide reduction reaction (CO2RR) to generate high-value products is considered to be a promising approach to reduce the atmospheric concentration of CO2. However, the pure CO2 gas is generally required in the most of the reported CO2RR system, which brings tedious capture and separation procedures and high cost. The utilization of realistic CO2 emission directly such as flue gas for the CO2RR is highly desirable. However, the gas impurities in the real CO2 sources such as oxygen could seriously affect the activity and selectivity of the CO2RR. This concept summarizes the recently reported works about CO2RR studies in the presence of O-2 and highlights the physical and chemical strategies to boost CO2 electroreduction performance. We further discuss the implications of these strategies for future progress in this emerging field.