A research group led by Prof. Xiao Jianping from the Dalian Institute of Chemical Physics (DICP) of the Chinese Academy of Sciences (CAS) and their collaborators synthesized a single-atom Pb-alloyed Cu catalyst (Pb1Cu), which showed high activity for the electrochemical CO2 reduction reaction (CO2RR) with a selectivity of 96% to formate and stability of up to 180 h at 100 mA cm-2.