20.500.12556/DKUM-91775 Comparative study of different polymeric binders in electrochemical CO reduction Electrochemical reduction of carbon monoxide offers a possible route to produce valuable chemicals (such as acetate, ethanol or ethylene) from CO2 in two consecutive electrochemical reactions. Such deeply reduced products are formed via the transfer of 4–6 electrons per CO molecule. Assuming similar-sized CO2 and CO electrolyzers, 2–3-times larger current densities are required in the latter case to match the molar fluxes. Such high reaction rates can be ensured by tailoring the structure of the gas diffusion electrodes. Here, the structure of the cathode catalyst layer was systematically varied using different polymeric binders to achieve high reaction rates. Simple linear polymers, bearing the same backbone but different functional groups were compared to highlight the role of different structural motifs. The comparison was also extended to simple linear, partially fluorinated polymers. Interestingly, in some cases similar results were obtained as with the current state-of-the-art binders. Using different surface-wetting characterization techniques, we show that the hydrophobicity of the catalyst layer─provided by the binder─ is a prerequisite for high-rate CO electrolysis. The validity of this notion was demonstrated by performing CO electrolysis experiments at high current density (1 A cm–2) for several hours using PVDF as the catalyst binder. electrochemical CO reduction polymeric binders carbon monoxide elektrokemijska redukcija CO polimerna veziva ogljikov dioksid true false true ACS Publications Angleški jezik Slovenski jezik https://pubs.acs.org/journal/enfuem?ref=breadcrumb © 2024 The Authors Članek v reviji 2025-02-04 12:13:37 2025-02-04 12:13:37 2026-01-15 11:42:31 0000-00-00 00:00:00 2024 0 0 str. 22307–22314 iss. 22 Vol. 38 2024 0000-00-00 Zaloznikova Objavljeno NiDoloceno 2024-08-21 2024-10-23 2024-11-05 544.5/.6 217480195 10.1021/acs.energyfuels.4c04058 1520-5029 galbicsek-et-al-2024-comparative-study-of-different-polymeric-binders-in-electrochemical-co-reduction.pdf galbicsek-et-al-2024-comparative-study-of-different-polymeric-binders-in-electrochemical-co-reduction.pdf 1 1102F2B65DBD40E38066518A9A6E8BBB 9a1b68caf3e90762eb14c6ad29d57334153d76c7d03766d71631ee38b3faf0df 6f80195d-e2e9-11ef-ba28-00155d000105 https://dk.um.si/Dokument.php?lang=slv&id=188442 https://pubs.acs.org/doi/10.1021/acs.energyfuels.4c04058 0 e4ada3c5-f1fe-11f0-9ca2-00155d580e02 https://dk.um.si/Dokument.php?lang=slv&id=202047 Fakulteta za kemijo in kemijsko tehnologijo 0 0 0