Electrowetting limits electrochemical CO₂ reduction in carbon-free gas diffusion electrodes.

ABSTRACT: CO₂ electrolysis might be a key process to utilize intermittent renewable electricity for the sustainable production of hydrocarbon chemicals without relying on fossil fuels. Commonly used carbon-based gas diffusion electrodes (GDEs) enable high Faradaic efficiencies for the desired carbon products at high current densities, but have limited stability. In this study, we explore the adaption of a carbon-free GDE from a Chlor-alkali electrolysis process as a cathode for gas-fed CO₂ electrolysis. We determine the impact of electrowetting on the electrochemical performance by analyzing the Faradaic efficiency for CO at industrially relevant current density. The characterization of used GDEs with X-ray photoelectron spectroscopy (XPS) and X-Ray diffraction (XRD) reveals a

SUBMITTER: Baumgartner LM 

PROVIDER: S-EPMC10634457 | biostudies-literature | 2023 Nov

REPOSITORIES: biostudies-literature