Issue 17, 2024

A review of noble metal-free high entropy alloys for water splitting applications

Abstract

Nano-sized high entropy alloy (HEA) catalysts have attracted much attention as extraordinary electrocatalysts in water-splitting applications, i.e., the hydrogen evolution reaction (HER) and oxygen evolution reaction (OER). Recently, there has been heightened interest in metal-free HEA catalysts, which are often considered more sustainable than their noble metal counterparts, while still performing competitively. Therefore, updating the current progress of the state-of-the-art electrolysis of HEAs is essential. This review aims to summarize the recent research progress of noble metal-free HEA nanocatalysts and their performances in the HER and OER. The critical concepts of HEAs, recently reported preparation methods and their performances in water-splitting are focused on in this review. This review also provides a perspective on the existing limitations of HEAs and an outlook for research into noble metal-free HEA nanocatalysts for the HER and OER.

Graphical abstract: A review of noble metal-free high entropy alloys for water splitting applications

Article information

Article type
Review Article
Submitted
30 Jan 2024
Accepted
20 Mar 2024
First published
11 Apr 2024
This article is Open Access
Creative Commons BY license

J. Mater. Chem. A, 2024,12, 9933-9961

A review of noble metal-free high entropy alloys for water splitting applications

H. Kamaruddin, Z. Jianghong, L. Yu, W. Yuefan and H. Yizhong, J. Mater. Chem. A, 2024, 12, 9933 DOI: 10.1039/D4TA00690A

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