High entropy alloy electrocatalysts

Compared to traditional pure metals or alloys based on just one principal element, high entropy alloys (HEAs) exhibit notable structural and physical characteristics, drawing significant attention. While significant advancements have been made in the synthesis and utilization of HEAs, there is a lack of comprehensive understanding and systematic approach towards the rational design of electrocatalysts. This review begins by introducing the fundamental principles and impacts of HEAs, followed by an overview of traditional and emerging synthesis techniques; in particular, we categorize and critically analyze approaches. Subsequently, a detailed examination of the advancements and comparative performance of HEAs in specific electrocatalytic reactions is presented. The paper concludes by outlining the current challenges and opportunities associated with HEAs catalysts, along with offering personal insights on potential future developments.