Issue 24, 2021

Design principles of noble metal-free electrocatalysts for hydrogen production in alkaline media: combining theory and experiment

Abstract

Water electrolysis is a promising solution to convert renewable energy sources to hydrogen as a high-energy-density energy carrier. Although alkaline conditions extend the scope of electrocatalysts beyond precious metal-based materials to earth-abundant materials, the sluggish kinetics of cathodic and anodic reactions (hydrogen and oxygen evolution reactions, respectively) impede the development of practical electrocatalysts that do not use precious metals. This review discusses the rational design of efficient electrocatalysts by exploiting the understanding of alkaline hydrogen evolution reaction and oxygen evolution reaction mechanisms and of the electron structure–activity relationship, as achieved by combining experimental and computational approaches. The enhancement of water splitting not only deals with intrinsic catalytic activity but also includes the aspect of electrical conductivity and stability. Future perspectives to increase the synergy between theory and experiment are also proposed.

Graphical abstract: Design principles of noble metal-free electrocatalysts for hydrogen production in alkaline media: combining theory and experiment

Article information

Article type
Review Article
Submitted
05 avq 2021
Accepted
19 okt 2021
First published
19 okt 2021
This article is Open Access
Creative Commons BY-NC license

Nanoscale Adv., 2021,3, 6797-6826

Design principles of noble metal-free electrocatalysts for hydrogen production in alkaline media: combining theory and experiment

H. Jung, S. Choung and J. W. Han, Nanoscale Adv., 2021, 3, 6797 DOI: 10.1039/D1NA00606A

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