Nickel single atom and copper nanoparticles used for highly selective tandem electrocatalysis of CO2 to ethylene

The electroreduction reaction of CO2 (CO2RR) into higher-value C2+ (C≥2) products such as C2H4 provides an environmental friendly technology to realize the cyclic utilization of carbon resources, but the activity and selectivity of higher-value C2+ (C≥2) products are largely limited by the multi-electron transfer process and sluggish C-C coupling step at one single active site.