Authors: Dongyang Wang, Youzeng Li, Shuang Geng, Ruoping Li, Ke Chen
Published: 2025-03-20
Source: Full article
AbstractElectrocatalytic carbon dioxide reduction reaction (CO2RR) into high‐value products on Cu‐based catalysts holds promise for achieving carbon neutrality. However, the productivity toward multi‐carbon products in CO2RR is insufficient for practical applications owing to limited *CO dimerization process, especially under high current operation. Here, the Ag‐doped oxide‐derived Cu nanosheets (CuAgx% NSs) catalysts are reported via tailoring Ag in Cu NSs at an atomic‐level to form C2+ products. The CuAg0.123% NSs achieved a significant Faradaic efficiency of 77.5% and 71.3% toward multi‐carbon products at 300 and 500 mA cm−2, respectively. Theoretical calculations and in situ characterizations reveal that the single‐atomic Ag‐doped Cu facet generates asymmetric CO‐adsorbed Cu sites, stabilizing *CO adsorption and further triggering C─C coupling for C2+ products. This work emphasizes the significance of asymmetric sites of Cu‐based catalysts for fine regulation of the critical intermediate *CO to enhance *CO dimerization for C2+ products.