Reconstructing interfacial electric double layer for efficient sulfur conversion reaction in aqueous zinc sulfur batteries.

ABSTRACT: Aqueous zinc sulfur batteries promise low-cost and safe grid-scale energy storage, but face challenges due to sluggish interfacial Zn²⁺ transfer and H₂O-induced ZnS disproportionation reactions at the interface of sulfur positive electrode. Here, we develop a hybrid electrolyte by introducing ZnI₂ and organic N,N-dimethylformamide cosolvent, in which iodide species contribute to catalytic oxidation of ZnS, while N,N-dimethylformamide cosolvent can effectively facilitate sulfur reduction reaction. By combining operando Raman spectroscopy with non-destructive electrochemical impedance spectroscopy and theoretical calculations/simulations, it demonstrates that N,N-dimethylformamide molecules preferentially adsorb on sulfur electrode surface and strongly intera

SUBMITTER: Lei J 

PROVIDER: S-EPMC12630962 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature