Enhanced electrochemical CO reduction selectivity by application of self-assembled polymer microparticles to a silver electrode

The electrocatalytic reduction of CO 2 to CO using an Ag electrode in an aqueous solution was enhanced following modification of the cathode surface with high-density self-assembled polystyrene microspheres. The modified electrode exhibited improved water repellency, which is believed to have increased its selectivity for the reduction of gaseous CO 2 . The self-assembled PS-modified Ag electrodes increased the selectivity for CO 2 reduction to CO and inhibited H 2 generation.