Journal
ENERGY & ENVIRONMENTAL SCIENCE
Volume 11, Issue 9, Pages 2531-2539Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c8ee01684d
Keywords
-
Funding
- Natural Sciences and Engineering Research Council (NSERC)
- Government of Ontario through Ontario Research Fund - Research Excellence program
- Connaught Fund
- NSERC
- FRQNT
- Government of Ontario
- Hatch
- Govt. of Canada
- NSERC, Hatch
Ask authors/readers for more resources
The electroreduction of carbon dioxide (CO2) to carbon monoxide (CO) is a promising strategy to utilize CO2 emissions while generating a high value product. Commercial CO2 electroreduction systems will require high current densities (>100 mA cm(-2)) as well as improved energetic efficiencies (EEs), achieved via high CO selectivity and lowered applied potentials. Here we report a silver (Ag)-based system that exhibits the lowest overpotential among CO2-to-CO electrolyzers operating at high current densities, 300 mV at 300 mA cm(-2), with near unity selectivity. We achieve these improvements in voltage efficiency and selectivity via operation in a highly alkaline reaction environment (which decreases overpotentials) and system pressurization (which suppresses the generation of alternative CO2 reduction products), respectively. In addition, we report a new record for the highest half-cell EE (>80%) for CO production at 300 mA cm(-2).
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available