Cooperation of Different Active Sites to Promote CO<sub>2</sub> Electroreduction to Multi‐carbon Products at Ampere‐Level
Dawei Zhou, Chunjun Chen, Yichi Zhang, Min Wang, Shitao Han, Xue Dong, Ting Yao, Shuaiqiang Jia, Mingyuan He, Haihong Wu, Buxing Han
Abstract
Abstract Electroreduction of CO 2 to C 2+ products provides a promising strategy for reaching the goal of carbon neutrality. However, achieving high selectivity of C 2+ products at high current density remains a challenge. In this work, we designed and prepared a multi‐sites catalyst, in which Pd was atomically dispersed in Cu (Pd−Cu). It was found that the Pd−Cu catalyst had excellent performance for producing C 2+ products from CO 2 electroreduction. The Faradaic efficiency (FE) of C 2+ products could be maintained at approximately 80.8 %, even at a high current density of 0.8 A cm −2 for at least 20 hours. In addition, the FE of C 2+ products was above 70 % at 1.4 A cm −2 . Experiments and density functional theory (DFT) calculations revealed that the catalyst had three distinct catalytic sites. These three active sites allowed for efficient conversion of CO 2 , water dissociation, and CO conversion, ultimately leading to high yields of C 2+ products.