Year: 2025
Type: article
Abstract: We study the key factors governing the high‐pressure electrochemical reduction of CO 2 to CO using commercial silver electrodes. Voltammetry and electrolysis results, combined with X‐ray diffraction and microscopy analyses, show that the applied current density is the most important parameter. When this is doubled from 150 to 300 mA/cm 2 geo , the CO yield goes down drastically, and more hydrogen is produced at the cathode. At the lower current density (150), the hydrogen production is independent of the type of electrode (roughness factor). Conversely, the CO yield does depend on the type of electrode. At the high current density, both H 2 and CO production depend on the electrode parameters. The highest CO yield (> 80%) is obtained using a commercially available etched silver foam at 150 mA/cm 2 geo .
Source: ChemCatChem
Authors: Noë I. Watson, Charlotte von Quadt, Stanislav Molodtsov, Lukas Balk, Bart van den Bosch, Gadi Rothenberg
Institutions: Avantium (Netherlands), University of Amsterdam
Language: English
Field: Energy
Domain: Physical Sciences
Open Access status: hybrid
Estimated APC paid: $4,500
Funder: European Commission
OpenAlex ID: W4414277288