Solute-solvent dual engineering toward versatile electrolyte for high-voltage aqueous zinc-based energy storage devices.

ABSTRACT: Manufacturing cost-effective electrolytes featuring high (electro)chemical stability, high Zn anode reversibility, good ionic conductivity, and environmental benignity is highly desired for rechargeable aqueous zinc-based energy storage devices but remains a great challenge. Herein, a solute-solvent dual engineering strategy using lithium bis(trifluoromethane)sulfonimide (LiTFSI) and inexpensive poly(ethylene glycol) (PEG, M _n = 200) as a coadditive with an optimized ratio accomplished an all-round performance enhancement of electrolytes. Due to the synergistic inhibition of water activity and Zn²⁺ solvation structure reorganization by LiTFSI-PEG, as well as a stable F-rich interfacial layer and PEG adsorption on the Zn anode surface, dendrite-free Zn plating/s

SUBMITTER: Peng M 

PROVIDER: S-EPMC11670703 | biostudies-literature | 2024 Nov

REPOSITORIES: biostudies-literature