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Issue 9, 2019
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Recent progress made in the mechanism comprehension and design of electrocatalysts for alkaline water splitting

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Abstract

Alkaline water splitting is an attractive method for sustainable hydrogen production. Owing to the sluggish kinetics of alkaline water reduction and oxidation, it is crucial to understand the mechanism of the hydrogen evolution reaction/oxygen evolution reaction (HER/OER) and construct efficient electrocatalysts based on the structure–activity relationship. This review describes the fundamentals of the alkaline HER and OER, the design of noble and nonnoble HER electrocatalysts with low energy barriers, OER electrocatalysts based on binding energy, electronic structure, lattice oxygen, and surface reconstruction as well as the recent developments of bifunctional HER/OER electrocatalysts. Future perspectives towards alkaline water splitting electrocatalysts are also proposed.

Graphical abstract: Recent progress made in the mechanism comprehension and design of electrocatalysts for alkaline water splitting

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Article information


Submitted
15 Apr 2019
Accepted
26 Jun 2019
First published
26 Jun 2019

Energy Environ. Sci., 2019,12, 2620-2645
Article type
Review Article

Recent progress made in the mechanism comprehension and design of electrocatalysts for alkaline water splitting

C. Hu, L. Zhang and J. Gong, Energy Environ. Sci., 2019, 12, 2620
DOI: 10.1039/C9EE01202H

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