Nanoporous high-entropy alloys for electrochemical applications

As an emerging class of functional materials, nanoporous high-entropy alloys (NPHEAs) combine the structural merits of nanoporous metals with the intrinsic advantages of high-entropy alloys. NPHEAs exhibit remarkable properties, including a large specific surface area with multi-element active sites, efficient mass transfer and electron transport channels, excellent structural stability and degradation resistance, as well as tunable elemental composition. This review summarizes the synthesis strategies, key properties, and representative electrochemical applications of NPHEAs, while highlighting the key challenges in the future and providing insights for potential research directions.