biostudies-literatureUnknown16(33)Shi JThe shuttle effect and sluggish redox kinetics of polysulfides pose significant challenges to the long-cycle stability of alkali metal-sulfur batteries, necessitating the development of highly efficient catalysts. High-entropy alloys (HEAs) have emerged as promising electrocatalysts for energy storage due to their unique electronic properties and high configurational entropy. Tailoring the electronic configuration of HEAs to achieve a well-positioned d-band center is a vital strategy for enhancing catalytic performance in alkali metal-sulfur batteries systems. In this study, the electronic configurations of HEAs were systematically tuned by varying the fifth metal element. Among them, NiCoFeCuMo (HEA-Mo) exhibited an optimized electronic configuration and a favorable d-band center, fully dChemical science14956-14966https://www.ebi.ac.uk/biostudies/studies/S-EPMC12301893biostudies-literatureHigh-entropy alloy catalysts with tunable electronic configurations for enhanced sulfur reduction electrocatalysis.PMC12301893Fang YJiao MLiu YWu MZhao RJiang WHe XZhang HShi JZhou ZfalseHigh-entropy alloy catalysts with tunable electronic configurations for enhanced sulfur reduction electrocatalysis.The shuttle effect and sluggish redox kinetics of polysulfides pose significant challenges to the long-cycle stability of alkali metal-sulfur batteries, necessitating the development of highly efficient catalysts. High-entropy alloys (HEAs) have emerged as promising electrocatalysts for energy storage due to their unique electronic properties and high configurational entropy. Tailoring the electronic configuration of HEAs to achieve a well-positioned d-band center is a vital strategy for enhancing catalytic performance in alkali metal-sulfur batteries systems. In this study, the electronic configurations of HEAs were systematically tuned by varying the fifth metal element. Among them, NiCoFeCuMo (HEA-Mo) exhibited an optimized electronic configuration and a favorable d-band center, fully d2025-01-01T00:00:00Z2025 Aug2026-05-09T17:54:18.446Z2025-08-28T03:06:00.25ZS-EPMC123018934073568310.1039/d5sc04586j