Ultrathin heterogeneous nanolayer structure of FeCoNiCu multi-principal element alloy for robust water electrolysis

IF 13.3 1区工程技术 Q1 ENGINEERING, CHEMICAL

Chemical Engineering Journal Pub Date : 2025-01-27 DOI:10.1016/j.cej.2025.160016

Zhiyi Ding, Ziyang Chen, Xinyang Liu, Junjie Liu, Tong Wang, Aiying Chen, Bin Gan, Yong Zhang

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Abstract

Developing efficient, cost-effective alloy catalysts for the hydrogen evolution reaction (HER) is a promising strategy to convert electrical energy to chemical fuels efficiently, however, it remains challenge. Herein, a designed non-equimolar FeCoNiCu multi-principal element alloys (MPEAs) catalyst, fabricated via a simple physical metallurgy and chemical dealloying, exhibits HER performance comparable to commercial noble metal counterpart. The optimal (FeCoNi)₇₀Cu₃₀ (at.%) catalysts display a remarkable minimum overpotential of 34 mV (@10 mA cm⁻²) and a Tafel slope of 48 mV dec^-1. Meanwhile, the electrocatalyst exhibits excellent 24 h long-term durability stability at a high current density of −500 mA cm⁻²_. This is attributed to the multi-scale substructure of distinctive, self-supporting Colosseum-inspired skeletal structure, coupled with nanoscale porous architecture attached to ultra-thin serrated amorphous nanolayer structure, significantly enhancing the specific surface and active sites. This study provides a novel strategy for designing high-performance non-precious metal catalysts with heterogeneous substructures based on multicomponent combinations.

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来源期刊

Chemical Engineering Journal 工程技术-工程：化工

CiteScore

21.70

自引率

9.30%

发文量

6781

审稿时长

2.4 months

期刊介绍： The Chemical Engineering Journal is an international research journal that invites contributions of original and novel fundamental research. It aims to provide an international platform for presenting original fundamental research, interpretative reviews, and discussions on new developments in chemical engineering. The journal welcomes papers that describe novel theory and its practical application, as well as those that demonstrate the transfer of techniques from other disciplines. It also welcomes reports on carefully conducted experimental work that is soundly interpreted. The main focus of the journal is on original and rigorous research results that have broad significance. The Catalysis section within the Chemical Engineering Journal focuses specifically on Experimental and Theoretical studies in the fields of heterogeneous catalysis, molecular catalysis, and biocatalysis. These studies have industrial impact on various sectors such as chemicals, energy, materials, foods, healthcare, and environmental protection.