Journal
SCIENCE ADVANCES
Volume 6, Issue 11, Pages -Publisher
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/sciadv.aaz3318
Keywords
-
Categories
Funding
- NSF [1828190]
- Center for Molecular Electrocatalysis, an Energy Frontier Research Center - U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences
- NSF Graduate Research Fellowship
- Division Of Chemistry
- Direct For Mathematical & Physical Scien [1828190] Funding Source: National Science Foundation
Ask authors/readers for more resources
The development of advanced chemical-to-electrical energy conversions requires fast and efficient electrocatalysis of multielectron/multiproton reactions, such as the oxygen reduction reaction (ORR). Using molecular catalysts, correlations between the reaction rate and energy efficiency have recently been identified. Improved catalysis requires circumventing the rate versus overpotential trade-offs implied by such scaling relationships. Described here is an ORR system-using a soluble iron porphyrin and weak acids-with the best reported combination of rate and efficiency for a soluble ORR catalyst. This advance is achieved not by breaking scaling relationships but rather by combining two of them. Key to this behavior is a polycationic ligand, which enhances anionic ligand binding and changes the catalyst E-1/2. These results show how combining scaling relationships is a powerful way toward improved electrocatalysis.
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