Industrial Application Aspects of the Electrochemical Reduction of CO₂ to CO in Aqueous Electrolyte

Abstract The industrialization of the electrochemical reduction of CO 2 toward CO in aqueous electrolytes has recently been started using silver‐based gas diffusion electrodes. The performance of a CO 2 ‐to‐CO electrolyzer model on a 10‐cm 2 cell size is assessed with respect to operating pressure, achievable current density at faradaic efficiency of CO above 90 %, composition of gas streams and operational lifetime. Operational lifetime has exceeded 1500 h. The first scaling step to 300 cm 2 has been accomplished. The rated power of such a cell is around 300 W.