Abstract
The electrochemical reduction of CO 2 in KOH + methanol electrolyte was investigated with a gold electrode at −25, −15, 0 and 15°C. The main products from CO 2 were carbon monoxide and formic acid. The current efficiency for CO formation was larger than that for formic acid formation. In general, the formation efficiency for CO increased as the temperature decreased, however in contrast, hydrogen formation decreased. The selectivity of CO 2 reduction over H 2 evolution was ameliorated by decreasing temperature. From the Tafel plot study, a sufficiently high mass transfer of CO 2 to the electrode was confirmed even in the low temperature region. Consequently, it was found that temperatures of less than 0°C were effective for the suppression of hydrogen formation on the Au electrode in the KOH + methanol electrolyte.
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.
