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Universal scaling relations for the rational design of molecular water oxidation catalysts with near-zero overpotential

Open access
Craig, Michael John, Coulter, Gabriel, Dolan, Eoin, Soriano-López, Joaquín, Mates-Torres, Eric, Schmitt, Wolfgang, García-Melchor, Max·2019·Nature Communications

Abstract

A major roadblock in realizing large-scale production of hydrogen via electrochemical water splitting is the cost and inefficiency of current catalysts for the oxygen evolution reaction (OER). Computational research has driven important developments in understanding and designing heterogeneous OER catalysts using linear scaling relationships derived from computed binding energies. Herein, we interrogate 17 of the most active molecular OER catalysts, based on different transition metals (Ru, Mn, Fe, Co, Ni, and Cu), and show they obey similar scaling relations to those established for heterogeneous systems. However, we find that the conventional OER descriptor underestimates the activity for very active OER complexes as the standard approach neglects a crucial one-electron oxidation that many molecular catalysts undergo prior to O–O bond formation. Importantly, this additional step allows certain molecular catalysts to circumvent the “overpotential wall”, leading to enhanced performance. With this knowledge, we establish fundamental principles for the design of ideal molecular OER catalysts.

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Metadata

Authors
Craig, M. J., Coulter, G., Dolan, E., Soriano-López, J., Mates-Torres, E., Schmitt, W., & García-Melchor, M.
Venue
Nature Communications
Published
2019-11-08
Volume
10
Issue
1
Pages
4993-4993
ISSN
2041-1723 (ISSN-L)
OpenAlex
W2974389001
Cited by
291
References
13
FWCI
5.88
Type
journal article
Language
en
Open access
gold

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CoChat. (2026). Citation check: Universal scaling relations for the rational design of molecular water oxidation catalysts with near-zero overpotential. https://app.cochat.ai/papers/10.1038/s41467-019-12994-w
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Craig, M. J., Coulter, G., Dolan, E., Soriano-López, J., Mates-Torres, E., Schmitt, W., & García-Melchor, M. (2019). Universal scaling relations for the rational design of molecular water oxidation catalysts with near-zero overpotential. Nature Communications. https://doi.org/10.1038/s41467-019-12994-w

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