Favorable Moderate Adsorption of Polysulfide on FeNi₃ Intermetallic Compound Accelerating Conversion Kinetics for Advanced Lithium–Sulfur Batteries (Small 17/2025)

Lithium–Sulfur Batteries In article number 2407116, Zhen Wu, Jingwen Sun, Yongsheng Fu, and co-workers propose a lattice engineering strategy to regulate the d-electronic structure of FeNi3 intermetallic compounds to optimize the adsorption of polysulfides. The FeNi2.25 catalyst with moderate adsorption strength for polysulfides not only promotes the catalytic conversion of polysulfides but also facilitates desorption of Li2S2/Li2S, significantly reducing the reaction energy barrier and improving the catalytic activity.