Issue 11, 2023

The rotating disc electrode: measurement protocols and reproducibility in the evaluation of catalysts for the oxygen evolution reaction

Abstract

A measurement protocol for the evaluation of catalyst inks for the oxygen evolution reaction via rotating disc electrode measurements was conceived and applied in a multi-partner project. It was found that the electrochemical performances determined for a standardized electrode based on nickel–cobalt–oxide in 1 M KOH show a spread in the range of 50 mV at 10 mA cm−2, when comparing results from different groups. The variation of results obtained within individual groups, on the other hand, were found to be significantly lower. From this finding, we argue that the characterization of catalyst inks via rotating disk electrode measurements is strongly affected by individual sample preparation and handling, leading to an additional uncertainty that depends on the individual experimenter. Consequently, the use of this technique for the evaluation and comparison of catalysts for the oxygen evolution reaction needs to be discussed and potentially revisited.

Graphical abstract: The rotating disc electrode: measurement protocols and reproducibility in the evaluation of catalysts for the oxygen evolution reaction

Supplementary files

Article information

Article type
Paper
Submitted
20 Jul 2023
Accepted
16 Sep 2023
First published
19 Sep 2023
This article is Open Access
Creative Commons BY license

Energy Adv., 2023,2, 1823-1830

The rotating disc electrode: measurement protocols and reproducibility in the evaluation of catalysts for the oxygen evolution reaction

M. F. Tesch, S. Neugebauer, P. V. Narangoda, R. Schlögl and A. K. Mechler, Energy Adv., 2023, 2, 1823 DOI: 10.1039/D3YA00340J

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