High-dimensional strain unlocks fast polysulfide redox kinetics for lithium-sulfur batteries.

ABSTRACT: Strain engineering is an effective approach to enhancing the activity of catalysts by tuning the electrical and geometric configurations. However, the impact of strain dimension on the sulfur redox kinetics and polysulfide adsorption configuration has yet been deciphered. Herein, we employ a biaxial-strained dichalcogenide catalyst with highly curved basal planes to activate the reserve metal atoms and realize efficient lithium-sulfur batteries. The high-dimensional strain enhances the exposure of Mo sites, thereby shifting the polysulfide adsorption mechanism from weak Li-S/Se bonding to strong S*-Mo bonding. Moreover, biaxial strain upshifts both d and p band centers, fostering the interfacial charge transfer and catalytic activity. Based on this mechanism, we obtain apparent correlation

SUBMITTER: Yang JL 

PROVIDER: S-EPMC12504608 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature