Abstract: To realize the goal of carbon peaking and carbon neutrality, CO₂ capture and utilization technology is becoming increasingly urgent. However, the low efficiency and complex processes limit its large-scale application. Among utilization technology of CO₂, electrochemical CO₂ reduction reaction (CO₂RR) has attracted interest, attributing to the use of clean energy and the final product of value-added fuels. The construction of catalysts with integrated CO₂ capture and reduction ability is expected to bridge the gap between CO₂ capture and conversion, achieving the direct utilization of flue gas, reducing costs, and simplifying devices. Keeping this in mind, we give this review to introduce the problems of low-concentration CO₂RR and the significance of coupled CO₂ capture/conversion electrocatalysts in addressing the emission of industrial flue gas first. Then, the regulation strategies, including functional group modification, co-catalytic effect, and catalysts-impurities interaction, which affected the CO₂ capture and electroreduction capacity towards catalysts were summarized and discussed. Finally, the challenges and perspectives about the design for linked CO₂ capture/conversion processes were proposed. This review will provide new insight into the building of multifunctional catalysts for CO₂ conversion.

Key words: CO₂ capture and electroreduction, Electrocatalyst, Functional group, Co-catalytic effect, Catalysts-impurities interaction