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Research Article | Open Access

A novel septenary high-entropy (oxy)hydroxide electrocatalyst for boosted oxygen evolution reaction

Lingjie Zhanga,( ), Fangshi Fana, Xiaomin Songa, Weiwei Caia, Jie Rena, Hui Yanga, Ningzhong Baoa,b
State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou, Zhejiang, 310027, China
State Key Laboratory of Material-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing, Jiangsu, 210009, China

Peer review under responsibility of The Chinese Ceramic Society.

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Graphical Abstract

Abstract

High-entropy materials (HEMs) have attracted extensive attention in the field of electrochemical catalysis due to their unique properties. However, the preparation of high-entropy catalysts typically relies on high-temperature, energy-intensive, and time-consuming synthesis methods due to their compositional complexity. In this study, a facile low-temperature electrochemical reconstruction approach is adopted to synthesize Ag-decorated septenary Co-Cu-Fe-Mo-Zn-Ag-Ru high-entropy (oxy)hydroxide electrocatalysts for oxygen evolution reaction (OER). By introducing Ag and Ru elements and implanting Ag nanoparticles to co-regulate the electronic structure of the catalysts, the as-prepared catalyst achieves remarkable OER performance with a low overpotential of 298 mV at 100 mA/cm2 and a small Tafel slope of 30.1 mV/dec in 1 mol/L KOH. This work offers a valuable strategy for developing high-performance high-entropy OER electrocatalysts.

Keywords

Oxygen vacancyHigh-entropy materialsOxygen evolution reactionElectrochemical reconstructionSeptenary metallic (oxy)hydroxide

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Journal of Materiomics
Volume 10 Issue 2,
March 2024
Pages 348-354
DOI: 10.1016/j.jmat.2023.06.006
Cite this article:
Zhang L, Fan F, Song X, et al. A novel septenary high-entropy (oxy)hydroxide electrocatalyst for boosted oxygen evolution reaction. Journal of Materiomics, 2024, 10(2): 348-354. https://doi.org/10.1016/j.jmat.2023.06.006

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Received: 18 May 2023
Revised: 06 June 2023
Accepted: 09 June 2023
Published: 03 July 2023
© 2023 The Authors.

This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
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