High-entropy Bifunctional Electrocatalysts

Abstract

High-entropy materials (HEMs) composed of five or more elements with nearly equal atomic ratios have attracted great attention owing to their unique physical and chemical properties. HEMs exhibit superior performance and stability in the field of electrocatalysis thanks to their unique compositions and interactions between different atoms. In recent years, various bifunctional catalysts have been reported in which HEMs are considered ideal bifunctional catalysts owing to their nearly continuous distribution of binding energies, which provide multiple catalytic sites for various reactions. This chapter summarizes recent research on high-entropy bifunctional catalysts with particular attention to the fundamental principles. In addition, HEMs for bifunctional catalytic applications in the future are described with specific illustrations.