High performance RuPd catalysts for CO2 reduction at gas-diffusion electrodes

Abstract The reactivity and selectivity of CO 2 reduction has been examined at gas-diffusion electrodes made of Ru, Pd and their alloy (Ru:Pd = 1:1). It was found that the current efficiency for the formation of formic acid at the gas-diffusion electrodes with RuPd catalysts is 90% at −1.1 V vs. NHE, where the current density is 80 mA.cm −2 . In addition, no CO formation was observed at gas-diffusion electrodes with RuPd catalysts.