Issue 23, 2023

Rational design of efficient electrocatalysts for hydrogen production by water electrolysis at high current density

Abstract

Hydrogen (H2) is an important clean energy carrier due to the merits of high combustion value and zero-carbon emission. Water electrolysis has been regarded as a promising technology for achieving green and sustainable production of H2. However, most of the electrocatalysts for water splitting can only work at low current density with poor long-term durability, and it is difficult to meet the extensive requirements of industrial-scale applications. In this article, challenges including the charge transfer, mass diffusion, and catalyst stability during high-current–density water electrolysis are discussed. With the aim of addressing these issues, various electrocatalyst design strategies including morphology engineering, electronic structure modulation, and surface/interface engineering are summarized in detail. For the purpose of promoting practical applications, recent achievements of practical anion exchange membrane water electrolysis (AEMWE) and proton exchange membrane water electrolysis (PEMWE) technologies are discussed. Finally, outlooks toward future investigations on high-current–density water electrolysis are presented. It is believed that this review will guide the rational design of catalysts with both high activity and high stability for high-current–density water electrolysis, and promote the development of industrial-scale green H2 production.

Graphical abstract: Rational design of efficient electrocatalysts for hydrogen production by water electrolysis at high current density

Article information

Article type
Review Article
Submitted
28 Mezh. 2023
Accepted
21 Eost 2023
First published
12 Gwen. 2023

Mater. Chem. Front., 2023,7, 6035-6060

Rational design of efficient electrocatalysts for hydrogen production by water electrolysis at high current density

Y. Wan, L. Zhou and R. Lv, Mater. Chem. Front., 2023, 7, 6035 DOI: 10.1039/D3QM00722G

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