Facile synthesis of porous Cu-Sn alloy electrode with prior selectivity of formate in a wide potential range for CO2 electrochemical reduction

CO2 electroreduction is regarded as a potential way to mitigate CO2 level and produce value-added chemicals. Although Cu-Sn bimetallic electrodes show an excellent selectivity towards targeted formate or CO, the better performance is only achieved in a narrow potential range. Herein, porous Cu6.26Sn5 electrode is prepared. Alloying Cu with Sn atoms tunes the electronic structure of catalyst, which balances the adsorption and protonation of CO2*–...