Pd‐doped In2O3 for CO2 Electroreduction to Ethanol through CO Binding Regulation

Abstract Renewable energy driven electrochemical carbon dioxide reduction (CO 2 RR) to alcohols provides an effective pathway for achieving carbon neutrality and sustainable development. However, it is challenging to convert CO 2 into ethanol due to the sluggish C−C coupling and complex 12 electron/proton transferred process, which has been achieved mainly on Cu catalysts but with poor selectivity. Herein, In 2 O 3 catalysts were doped with small amount of Pd and exhibited high activity for CO 2 RR to ethanol with a high Faradaic efficiency (50.7 %) at low overpotential. The introduction of Pd promotes the transformation of reaction products from formic acid to ethanol by modulating the binding strength of *CO intermediates. The in‐situ ATR‐SEIRAS and DFT calculations proved that the formation of Pd−O−In could modulate the binding strength of *CO and enhanced its coverage, thus facilitating C−C coupling step towards ethanol. This study may provide a new strategy to the generation of high value‐added products from CO 2 over Non‐Cu‐based catalysts.