Recent Advances of High-Entropy Intermetallics for Electrocatalysis

High-entropy intermetallics (HEIs) combining the advantages of ordered intermetallics and high-entropy alloys have been considered as highly promising candidates for electrocatalysis. Nevertheless, the comprehension and rational design of HEI electrocatalysts still lack a systematic summary. In this Review, we summarize the recent advances in HEI electrocatalysts and their applications in energy conversion reactions for the advancement of efficient electrocatalysts. At first, we propose the underlying thermodynamic mechanism and design principles of HEI electrocatalysts. After that, various synthetic strategies for HEI electrocatalysts are introduced. Furthermore, we highlight representative catalytic examples in important electrocatalytic reactions, such as the liquid fuel oxidation reaction (FOR), the oxygen reduction reaction (ORR), the hydrogen evolution reaction (HER), and so on. Finally, current issues and future perspectives on HEI electrocatalysts are presented.