High-entropy alloys in electrocatalysis: from fundamentals to applications

时间:2024-03-28浏览:10

文题目:High-entropy alloys in electrocatalysis: from fundamentals to applications

论文作者:

发表期刊:Chem. Soc. Rev., 2023,52, 8319-8373

Abstract

High-entropy alloys (HEAs) comprising five or more elements in  near-equiatomic proportions have attracted ever increasing attention for  their distinctive properties, such as exceptional strength, corrosion  resistance, high hardness, and excellent ductility. The presence of  multiple adjacent elements in HEAs provides unique opportunities for  novel and adaptable active sites. By carefully selecting the element  configuration and composition, these active sites can be optimized for  specific purposes. Recently, HEAs have been shown to exhibit remarkable  performance in electrocatalytic reactions. Further activity improvement  of HEAs is necessary to determine their active sites, investigate the  interactions between constituent elements, and understand the reaction  mechanisms. Accordingly, a comprehensive review is imperative to capture  the advancements in this burgeoning field. In this review, we provide a  detailed account of the recent advances in synthetic methods, design  principles, and characterization technologies for HEA-based  electrocatalysts. Moreover, we discuss the diverse applications of HEAs  in electrocatalytic energy conversion reactions, including the hydrogen  evolution reaction, hydrogen oxidation reaction, oxygen reduction  reaction, oxygen evolution reaction, carbon dioxide reduction reaction,  nitrogen reduction reaction, and alcohol oxidation reaction. By  comprehensively covering these topics, we aim to elucidate the  intricacies of active sites, constituent element interactions, and  reaction mechanisms associated with HEAs. Finally, we underscore the  imminent challenges and emphasize the significance of both experimental  and theoretical perspectives, as well as the potential applications of  HEAs in catalysis. We anticipate that this review will encourage further  exploration and development of HEAs in electrochemistry-related  applications.