Oxygen‐tolerant CO2 Electrocatalysis

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