“…5 To date, great efforts have been devoted to CO 2 RR to produce CO, primarily focusing on catalyst design for achieving high faradaic efficiencies (FEs) and minimizing energy cost. Various types of catalysts have been developed for CO production, including metal-based catalysts, 6,7 single-atom catalysts, 8,9 metal-free carbon-based catalysts, 10,11 and molecular catalysts. 12–14…”