Industrial Application Aspects of the Electrochemical Reduction of CO2 to CO in Aqueous Electrolyte. Issue 1 (15th January 2020)

• Record Type: Journal Article
• Authors: Krause, Ralf; Reinisch, David; Reller, Christian; Eckert, Helmut; Hartmann, David; Taroata, Dan; Wiesner‐Fleischer, Kerstin; Bulan, Andreas; Lueken, Alexander; Schmid, Guenter
• Other Names: Eichel Rüdiger‐A. guestEditor.; Leitner Walter guestEditor.; Wagemann Kurt guestEditor.
• Is Part Of: Chemie Ingenieur Technik. Volume 92:Issue 1/2(2020)
• Page Start: 53
• Page End: 61
• Publication Date: 2020-01-15
• Subjects: Aqueous electrolytes -- Current density -- Electrochemical reduction of CO2 -- Gas diffusion electrodes -- Pressurized operation mode; Chemical engineering -- Patents -- Periodicals; Chemical engineering -- Periodicals; Chemical industry -- Periodicals; Chemistry, Technical -- Periodicals; 660.05
• DOI: 10.1002/cite.201900092
• Languages: English
• ISSNs: 0009-286X

Abstract

Abstract: The industrialization of the electrochemical reduction of CO2 toward CO in aqueous electrolytes has recently been started using silver‐based gas diffusion electrodes. The performance of a CO2 ‐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. Abstract : Single‐step electrochemical reduction of CO2 in aqueous media is approaching industrial applicability. The article describes its fundamental properties, an industrial applicable operation window with the combined parameter set of faradaic efficiency, current density, single pass conversion efficiency and first scaling to 300 cm 2 .