Issue 10, 2022

Determining overpotentials for the oxidation of alcohols by molecular electrocatalysts in non-aqueous solvents

Abstract

Molecular electrocatalysts for energy-related transformations offer unique opportunities to elucidate mechanistic principles that contribute to improved rates and energy efficiency. New catalysts for electrochemical alcohol oxidation in non-aqueous conditions have been developed recently, but it is difficult to make meaningful performance comparisons between them because the different conditions used for each catalyst result in unquantified differences in driving force. The present report outlines an approach to determine the equilibrium potential for the oxidation of alcohols in organic solvents or solvent mixtures. These equilibrium potentials are then used to determine the overpotentials for a series of molecular electrocatalysts. Overall, the methodology outlined herein provides a foundation for future advances in this field and enables comparison of electrocatalyst performance under aqueous and non-aqueous reaction conditions.

Graphical abstract: Determining overpotentials for the oxidation of alcohols by molecular electrocatalysts in non-aqueous solvents

Supplementary files

Article information

Article type
Perspective
Submitted
06 May 2022
Accepted
09 Aug 2022
First published
17 Aug 2022
This article is Open Access
Creative Commons BY license

Energy Environ. Sci., 2022,15, 4015-4024

Determining overpotentials for the oxidation of alcohols by molecular electrocatalysts in non-aqueous solvents

A. L. Speelman, J. B. Gerken, S. P. Heins, E. S. Wiedner, S. S. Stahl and A. M. Appel, Energy Environ. Sci., 2022, 15, 4015 DOI: 10.1039/D2EE01458K

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