Abstract
Electrochemical reduction of CO 2 at metal- meso-tetraphenylporphyrin (TPP) supported gas diffusion electrodes (GDEs) under CO 2 at atmospheric pressure and 20 atm was carried out. At Co- and Fe-TPP supported GDEs that are comparatively active in the electrochemical reduction of CO 2 under atmospheric CO 2, the current efficiencies for the reduction of CO 2 increased up to 97.4 and 84.6%, respectively, by an increase in CO 2 pressure. At Cu- and Zn-TPP supported GDEs that showed low activity under atmospheric CO 2, the current efficiencies for CO 2 reduction increased up to 50.5 and 65.8%, respectively, under 20 atm CO 2. At these active metal-TPP supported GDEs, the potential of CO 2 reduction shifted positively by an increase in CO 2 pressure. These results indicate that the increase in concentration of CO 2 in the electrolyte solution caused by high pressure enhanced the electrocatalytic activity of metal-TPPs for CO 2 reduction.
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.
