The article reports an electrocatalytic system that reduces carbon dioxide (CO2) to carbon monoxide (CO) at overpotentials below 0.2 Volts (V). The system uses an ionic liquid electrolyte, specifically 1-ethyl-3-methylimidazolium tetrafluoroborate (EMIM-BF4), to lower the energy of the (CO2-) intermediate, thereby reducing the initial reduction barrier. The silver cathode then catalyzes the formation of CO. The system begins producing gaseous CO at an applied voltage of 1.5 V, slightly above the equilibrium voltage of 1.33 V. The system maintained CO production for at least 7 hours with Faradaic efficiencies over 96%. The energy efficiency of the process is 87% at low voltage, but it decreases as the voltage increases due to resistive losses. The authors acknowledge that the observed rates are lower than those required for commercial processes, but they expect further development to increase the turnover number and scale up the reactor configuration.The article reports an electrocatalytic system that reduces carbon dioxide (CO2) to carbon monoxide (CO) at overpotentials below 0.2 Volts (V). The system uses an ionic liquid electrolyte, specifically 1-ethyl-3-methylimidazolium tetrafluoroborate (EMIM-BF4), to lower the energy of the (CO2-) intermediate, thereby reducing the initial reduction barrier. The silver cathode then catalyzes the formation of CO. The system begins producing gaseous CO at an applied voltage of 1.5 V, slightly above the equilibrium voltage of 1.33 V. The system maintained CO production for at least 7 hours with Faradaic efficiencies over 96%. The energy efficiency of the process is 87% at low voltage, but it decreases as the voltage increases due to resistive losses. The authors acknowledge that the observed rates are lower than those required for commercial processes, but they expect further development to increase the turnover number and scale up the reactor configuration.