Amorphous Fe–Co oxide as an active and durable bifunctional catalyst for the urea-assisted H2 evolution reaction in seawater

Tianran Wei; Ge Meng; Yinhai Zhou; Zhifeng Wang; Qian Liu; Jun Luo; Xijun Liu

doi:10.1039/D3CC02419A

Amorphous Fe–Co oxide as an active and durable bifunctional catalyst for the urea-assisted H₂ evolution reaction in seawater†

Tianran Wei,

^ab Ge Meng,*^a Yinhai Zhou,^bc Zhifeng Wang,*^d Qian Liu,^e Jun Luo^f and Xijun Liu

*^b

Author affiliations

* Corresponding authors

^a Key Laboratory of Carbon Materials of Zhejiang Province, College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, China
E-mail: mengge@wzu.edu.cn

^b State Key Laboratory of Featured Metal Materials and Life-cycle Safety for Composite Structures, School of Resources, Environment and Materials, Guangxi University, Nanning 530004, China
E-mail: xjliu@gxu.edu.cn

^c School of Chemistry & Chemical Engineering, Henan University of Science and Technology, Luoyang 471023, China

^d School of Materials Science and Engineering, Hebei University of Technology, Tianjin 300401, China
E-mail: wangzf@hebut.edu.cn

^e Institute for Advanced Study, Chengdu University, Chengdu 610106, Sichuan, China

^f ShenSi Lab, Shenzhen Institute for Advanced Study, University of Electronic Science and Technology of China, Longhua District, Shenzhen 518110, China

Abstract

In this study, we prepared amorphous iron-cobalt oxide through the dealloying of trimetallic FeCoAl, showing excellent performance in both urea oxidation and hydrogen evolution reactions (UOR and HER) in alkaline seawater. The catalyst demonstrated stable UOR and HER activity during long-term operations due to the abundant active sites and oxygen vacancies. The catalyst required applied potentials of 1.52 and −0.185 V to yield 100 mA cm⁻² for the UOR and HER, respectively. Moreover, when used as both the cathode and anode, the electrolyzer required a working voltage of 1.68 V to yield 100 mA cm⁻² for urea-assisted hydrogen production.

This article is part of the themed collection: ChemComm Most Popular 2023 Articles

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Article information

DOI: https://doi.org/10.1039/D3CC02419A
Article type: Communication
Submitted: 18 Mey 2023
Accepted: 21 Jul 2023
First published: 22 Jul 2023

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Chem. Commun., 2023,59, 9992-9995

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Amorphous Fe–Co oxide as an active and durable bifunctional catalyst for the urea-assisted H₂ evolution reaction in seawater

T. Wei, G. Meng, Y. Zhou, Z. Wang, Q. Liu, J. Luo and X. Liu, Chem. Commun., 2023, 59, 9992 DOI: 10.1039/D3CC02419A

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