Corrosion engineering on AlCoCrFeNi high-entropy alloys toward highly efficient electrocatalysts for the oxygen evolution of alkaline seawater

IF 5.6 2区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

International Journal of Minerals, Metallurgy, and Materials Pub Date : 2023-10-11 DOI:10.1007/s12613-023-2624-7

Zhibin Chen, Kang Huang, Bowei Zhang, Jiuyang Xia, Junsheng Wu, Zequn Zhang, Yizhong Huang

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引用次数: 1

Abstract

Seawater splitting is a prospective approach to yield renewable and sustainable hydrogen energy. Complex preparation processes and poor repeatability are currently considered to be an insuperable impediment to the promotion of the large-scale production and application of electrocatalysts. Avoiding the use of intricate instruments, corrosion engineering is an intriguing strategy to reduce the cost and presents considerable potential for electrodes with catalytic performance. An anode comprising quinary AlCoCrFeNi layered double hydroxides uniformly decorated on an AlCoCrFeNi high-entropy alloy is proposed in this paper via a one-step corrosion engineering method, which directly serves as a remarkably active catalyst for boosting the oxygen evolution reaction (OER) in alkaline seawater. Notably, the best-performing catalyst exhibited oxygen evolution reaction activity with overpotential values of 272.3 and 332 mV to achieve the current densities of 10 and 100 mA·cm⁻², respectively. The failure mechanism of the obtained catalyst was identified for advancing the development of multicomponent catalysts.

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AlCoCrFeNi高熵合金对碱性海水析氧高效电催化剂的腐蚀工程

海水裂解是生产可再生和可持续氢能的一种有前景的方法。复杂的制备工艺和较差的重复性目前被认为是促进电催化剂大规模生产和应用的不可逾越的障碍。避免使用复杂的仪器，腐蚀工程是一种降低成本的有趣策略，并为具有催化性能的电极提供了相当大的潜力。本文采用一步腐蚀工程方法，提出了一种在AlCoCrFeNi高熵合金上均匀修饰五元AlCoCrFe Ni层状双氢氧化物的阳极，该阳极直接作为促进碱性海水中析氧反应（OER）的显著活性催化剂。值得注意的是，性能最好的催化剂表现出析氧反应活性，过电位值为272.3和332 mV，分别达到10和100 mA·cm−2的电流密度。确定了所获得的催化剂的失效机理，以促进多组分催化剂的开发。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

International Journal of Minerals, Metallurgy, and Materials 工程技术-材料科学：综合

CiteScore

9.30

自引率

16.70%

发文量

205

审稿时长

2 months

期刊介绍： International Journal of Minerals, Metallurgy and Materials (Formerly known as Journal of University of Science and Technology Beijing, Mineral, Metallurgy, Material) provides an international medium for the publication of theoretical and experimental studies related to the fields of Minerals, Metallurgy and Materials. Papers dealing with minerals processing, mining, mine safety, environmental pollution and protection of mines, process metallurgy, metallurgical physical chemistry, structure and physical properties of materials, corrosion and resistance of materials, are viewed as suitable for publication.