Selective CO2Electroreduction to Multi-Carbon Products on Organic-Functionalized CuO Nanoparticles by Local Micro-Environment Modulation

Developing surface-functionalized catalysts with exceptional activity and selectivity for the electrocatalytic CO2RR to C2+products under neutral electrolyte.A remarkable C2+FE of nearly 90% at an unprecedented current density of 300 mA cm−2and maintain high FE (> 80%) at the wide current density performance (100–600 mA cm−2) in neutral environments using a flow cell as well as MEA electrolyzer.Mechanical study reveals that reducing the coverage of coordinated K·H2O water increased the probability of intermediate reactants (CO) interacting with the surface, thereby promoting efficient C–C coupling and enhancing the yield of C2+products.