Direct Electroreduction of Low-Concentration CO<sub>2</sub>: Progress and Perspective
Jingjing Li, Xue-Rong Qin, Xiaoran Wang, Linlin Wang, Ziyou Yu, Tong‐Bu Lu
Abstract
The conversion of CO 2 into carbon-based fuels and chemicals via the electrocatalytic CO 2 reduction reaction (CO 2 RR) offers an attractive route to reducing the CO 2 emission for carbon neutrality. Currently, high-purity CO 2 gas has been widely used as the feedstock for most of the CO 2 RR studies, while CO 2 sources with a typically low concentration impose the extra cost for CO 2 capture and purification steps. The direct utilization of low-concentration CO 2 for the CO 2 RR is a promising approach to substantially address this problem. In this Perspective, we first highlight the prominent advantages of direct electroreduction of low-concentration CO 2 . Then we focus on the summary of several important design strategies for CO 2 RR in diluted CO 2 and gas impurities-containing CO 2 atmosphere. Finally, we propose personal outlooks on future challenges and some opportunities for this fascinating research field.