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AbstractA facile strategy to boost the activity and preserve the selectivity of CO2 reduction to formate using organic‐functionalized metal catalysts, specifically 2‐methyl‐imidazole coordinated to Bi, Bi[2‐MeIm], is reported, and the active surfaces are investigated during structural transformation under the applied cathodic potential necessary for CO2 reduction. Operando Raman spectroscopy unveils the structure evolution during the reaction and post‐electrolysis analysis shows the formation of three phases of bismuth‐based active surfaces. As a result, Bi[2‐MeIm] achieves an excellent CO2 reduction performance with an average formate selectivity of ≈90% Faradaic efficiency and high activity reaching a current density of up to −1 A cm−2 in a narrow window of cathodic potentials from −0.46 to −0.78 V versus RHE.