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Issue 25, 2020
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Fundamental understanding of the acidic oxygen evolution reaction: mechanism study and state-of-the-art catalysts

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Abstract

The oxygen evolution reaction (OER), as the anodic reaction of water electrolysis (WE), suffers greatly from low reaction kinetics and thereby hampers the large-scale application of WE. Seeking active, stable, and cost-effective OER catalysts in acidic media is therefore of great significance. In this perspective, studying the reaction mechanism and exploiting advanced anode catalysts are of equal importance, where the former provides guidance for material structural engineering towards a better catalytic activity. In this review, we first summarize the currently proposed OER catalytic mechanisms, i.e., the adsorbate evolution mechanism (AEM) and lattice oxygen evolution reaction (LOER). Subsequently, we critically review several acidic OER electrocatalysts reported recently, with focus on structure–performance correlation. Finally, a few suggestions on exploring future OER catalysts are proposed.

Graphical abstract: Fundamental understanding of the acidic oxygen evolution reaction: mechanism study and state-of-the-art catalysts

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Article information


Submitted
25 Mar 2020
Accepted
01 Jun 2020
First published
02 Jun 2020

Nanoscale, 2020,12, 13249-13275
Article type
Review Article

Fundamental understanding of the acidic oxygen evolution reaction: mechanism study and state-of-the-art catalysts

Z. Shi, X. Wang, J. Ge, C. Liu and W. Xing, Nanoscale, 2020, 12, 13249
DOI: 10.1039/D0NR02410D

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