Tailoring Na⁺ Chelation Dynamics for Expedient Sulfur Redox Kinetics in Low-Temperature Sodium-Sulfur Batteries.

ABSTRACT: Sodium-sulfur (Na-S) batteries have attracted considerable attention due to their high theoretical energy density and the abundant natural availability of sodium and sulfur. However, sluggish kinetics of sulfur conversion, slow Na⁺ transport, and interfacial instability at low temperatures pose significant challenges for their operation and limit their practical application. Herein, three solvents with well-designed molecular configurations are examined. We systematically investigate the impact of chelation effect on the desolvation behavior, sulfur conversion process, ion dynamics, and Na⁺ plating/stripping behavior. Compared with conventional linear ether solvents, the incorporation of methyl groups not only weaken the chelation capability and tailors the inner solvation sheath, but also

SUBMITTER: Pai MH 

PROVIDER: S-EPMC12707357 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature