Abstract
AbstractNeutral CO2 electroreduction to multi‐carbons (C2+) offers a promising pathway to reduce the CO2 and energy losses originating from the carbonate formation. However, the sluggish kinetics of C−C coupling brings a significant challenge of achieving high selectivity of a single product (such as ethylene), especially at industrial‐relevant current densities (>300 mA cm−2). Here, we reported an optimized Ag‐Cu2O interfacial catalyst that exhibited C2+ Faradaic efficiency (FE) of 73.6 % at 650 mA cm−2 in a flow cell. Remarkably, it obtained FEC2H4 of 66.0 % with a partial current density of 429.1 mA cm−2, making it stand out among the reported Cu‐based electrocatalysts. In situ Raman spectra uncovered that the Ag/Cu2O interfaces enabled a high coverage of *CO around the partially reduced Cu+/Cu0 active sites. Furthermore, theoretical calculations demonstrated the enhanced CO formation and C−C coupling at the Ag/Cu2O interface. This work reported an unprecedented neutral CO2 electroreduction to C2H4 performance and provided an in‐depth comprehension of the role of the bimetallic interface.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
