Ahmad Abrar, Nairan Adeela, Feng Zhuo, Zheng Ruiming, Bai Yelin, Khan Usman, Gao Junkuo
Institute of Functional Porous Materials, School of Material Science and Engineering, Zhejiang Sci-Tech University, Hangzhou, 310018, China.
Small. 2024 Jul;20(29):e2311929. doi: 10.1002/smll.202311929. Epub 2024 Feb 23.
The global pursuit of sustainable energy is focused on producing hydrogen through electrocatalysis driven by renewable energy. Recently, High entropy alloys (HEAs) have taken the spotlight in electrolysis due to their intriguing cocktail effect, broad design space, customizable electronic structure, and entropy stabilization effect. The tunability and complexity of HEAs allow a diverse range of active sites, optimizing adsorption strength and activity for electrochemical water splitting. This review comprehensively covers contemporary advancements in synthesis technique, design framework, and physio-chemical evaluation approaches for HEA-based electrocatalysts. Additionally, it explores design principles and strategies aimed at optimizing the catalytic activity, stability, and effectiveness of HEAs in hydrogen evolution reaction (HER), oxygen evolution reaction (OER), and overall water splitting. Through an in-depth investigation of these aspects, the complexity inherent in constituent element interactions, reaction processes, and active sites associated with HEAs is aimed to unravel. Eventually, an outlook regarding challenges and impending difficulties and an outline of the future direction of HEA in electrocatalysis is provided. The thorough knowledge offered in this review will assist in formulating and designing catalysts based on HEAs for the next generation of electrochemistry-related applications.
全球对可持续能源的追求集中在通过可再生能源驱动的电催化来生产氢气。最近，高熵合金（HEAs）因其引人入胜的混合效应、广阔的设计空间、可定制的电子结构和熵稳定效应而在电解领域备受关注。高熵合金的可调性和复杂性允许存在各种各样的活性位点，从而优化电化学水分解的吸附强度和活性。本综述全面涵盖了基于高熵合金的电催化剂在合成技术、设计框架和物理化学评估方法方面的当代进展。此外，还探讨了旨在优化高熵合金在析氢反应（HER）、析氧反应（OER）和全水分解中的催化活性、稳定性和有效性的设计原则和策略。通过对这些方面的深入研究，旨在揭示与高熵合金相关的组成元素相互作用、反应过程和活性位点所固有的复杂性。最终，提供了关于挑战和即将面临的困难的展望以及高熵合金在电催化领域的未来方向概述。本综述提供的全面知识将有助于为下一代电化学相关应用设计和开发基于高熵合金的催化剂。
