High‐Entropy Materials for Water Electrolysis

Green hydrogen production by renewables‐powered water electrolysis holds the key to energy sustainability and a carbon‐neutral future. The sluggish kinetics of water‐splitting reactions, namely, evolution reaction (HER) oxygen (OER), however, remains bottleneck technology. High‐entropy materials, due their compositional flexibility, structural stability, synergy between various elemental components, have recently aroused considerable interest in catalyzing reactions. Herein, timely review recent achievements is provided high‐entropy materials for electrolysis. An overview different kinds HER OER half‐reactions introduced, followed discussion theoretical experimental efforts understanding fundamental origins enhanced catalytic performance observed on catalysts. Various design strategies, including control size shape, construction porous structure, engineering defect, formation hybrid/composite develop catalysts with improved are highlighted. Finally, remaining challenges pointed out corresponding perspectives address these put forward promote development research field