Industrial Application Aspects of the Electrochemical Reduction of CO<sub>2</sub> to CO in Aqueous Electrolyte
Ralf Krause, David Reinisch, Christian Reller, Helmut Eckert, David Hartmann, Dan Taroata, Kerstin Wiesner‐Fleischer, Andreas Bulan, Alexander Lueken, Guenter Schmid
Abstract
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.
Topics & Concepts
ElectrolyteElectrochemistryElectrolysisFaraday efficiencyAqueous solutionDiffusionMaterials sciencePower densityGas diffusion electrodeElectrodeGaseous diffusionElectrochemical cellChemical engineeringChemistryAnalytical Chemistry (journal)ThermodynamicsPower (physics)Environmental chemistryEngineeringPhysical chemistryPhysicsCO2 Reduction Techniques and CatalystsAdvanced battery technologies researchIonic liquids properties and applications