Efficient Bio-Inspired Oxygen Reduction Electrocatalysis with Electropolymerized Cobalt Corroles

Ariel Friedman, Lena Landau, Shmuel Gonen, Zeev Gross, Lior Elbaz

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76 Scopus citations


Fuel cells are considered as the only viable solution for long-range electromobility, but very rare and expensive platinum is currently required for catalyzing the bottleneck reaction therein: oxygen reduction. Within the search for catalysts that are not based on precious metals, cobalt corroles were uncovered to fulfill the requirements of high selectivity and low overpotential. We now report on the electropolymerization of a specifically designed catalyst, a cobalt(III) complex of tris(4-aminophenyl)corrole, upon which 3D polymeric structures were obtained. Much better catalytic activity was obtained by this approach in comparison to monomeric catalyst, manifested by significantly lower overpotentials, as well as higher selectivity to the desired 4e-/4H+ pathway. The performance in an alkaline environment makes it the most active molecular catalyst for the oxygen reduction reaction reported to date.

Original languageEnglish
Pages (from-to)5024-5031
Number of pages8
JournalACS Catalysis
Issue number6
StatePublished - 1 Jun 2018

Bibliographical note

Funding Information:
The authors thank The Israeli Ministry of Energy, VATAT, and the Fuel Choices and Smart Mobility Initiative in the Israeli Prime Minister’s Office for supporting this work. A.F. thanks the Israeli Ministry of Energy for his Scholarship. This work was done in the framework of the Israeli Fuel Cells consortium (part of the Israeli National Center for Electrochemical Propulsion).

Publisher Copyright:
© 2018 American Chemical Society.


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