Tailoring high-entropy alloys for cutting-edge hydrogen evolution electrocatalysis

IF 9.2 2区工程技术 Q1 ENERGY & FUELS

Sustainable Materials and Technologies Pub Date : 2025-09-17 DOI:10.1016/j.susmat.2025.e01655

Akbar Hojjati-Najafabadi , Reza Behmadi , Yezeng He , Hesam Kamyab , Yasser Vasseghian

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Abstract

This paper provides a general overview of high-entropy alloys (HEAs) as future electrocatalysts for the hydrogen evolution reaction (HER). Growing energy demands worldwide and the need to mitigate climate change have placed attention on the efficient, sustainable production of hydrogen through electrochemical water splitting. Traditional noble-metal electrocatalysts such as platinum (Pt) possess excellent HER activity but are burdened by exorbitantly inhibitive cost, scarcity, and poisoning sensitivity. High-entropy alloys that consist of five or more major components in nearly equimolar proportions offer a paradigmatic solution due to their unique structural and electronic properties. High configurational entropy, lattice distortion, sluggish diffusion, and synergistic "cocktail" effects, in combination, enhance the catalytic activity of these alloys. Improved synthesis techniques of HEAs in nanoparticle, nanowire, and porous network forms have been discovered to exhibit high HER activity with low overpotentials and long-term durability. This review critically explores the fundamental principles of HER, the design principles of HEA electrocatalysts, and their applications in catalysis, with special focus on directions for future research to realize their full potential.

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为尖端析氢电催化定制高熵合金

综述了高熵合金（HEAs）作为析氢反应（HER）电催化剂的前景。世界范围内不断增长的能源需求和缓解气候变化的需要使人们关注通过电化学水分解高效、可持续地生产氢气。传统的贵金属电催化剂如铂（Pt）具有优异的HER活性，但存在抑制成本过高、稀缺性和中毒敏感性等问题。高熵合金由于其独特的结构和电子性能，提供了一种典型的解决方案，它由五种或更多的主要成分以接近等摩尔的比例组成。高构型熵、晶格畸变、缓慢扩散和协同“鸡尾酒”效应共同增强了这些合金的催化活性。纳米粒子、纳米线和多孔网络形式的HEAs的改进合成技术已被发现具有高HER活性、低过电位和长期耐用性。本文对HEA的基本原理、HEA电催化剂的设计原则及其在催化中的应用进行了综述，并对其未来的研究方向进行了展望，以充分发挥其潜力。

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

Sustainable Materials and Technologies Energy-Renewable Energy, Sustainability and the Environment

CiteScore

13.40

自引率

4.20%

发文量

158

审稿时长

45 days

期刊介绍： Sustainable Materials and Technologies (SM&T), an international, cross-disciplinary, fully open access journal published by Elsevier, focuses on original full-length research articles and reviews. It covers applied or fundamental science of nano-, micro-, meso-, and macro-scale aspects of materials and technologies for sustainable development. SM&T gives special attention to contributions that bridge the knowledge gap between materials and system designs.