Three-dimensional heterogeneity in liquid electrolyte structures promotes Na ion transport and storage performance in Na-ion batteries.

ABSTRACT: Unlike solid materials, the molecular structure and chemical distribution in electrolyte solutions have been considered in isotropic states. Herein, we reveal controllable regulation of solution structures in electrolytes by manipulating solvent interactions for Na-ion batteries. Low-solvation fluorocarbons as diluents in concentrated phosphate electrolytes induce adjustable heterogeneity in electrolyte structures through variable intermolecular forces between high-solvation phosphate and diluents. An optimal trifluorotoluene (PhCF₃) diluent weakens the solvation strength around Na⁺ and spontaneously leads to a locally enlarged Na⁺ concentration and global 3D continuous Na⁺ transport path thanks to the appropriate electrolyte heterogeneity. Besid

SUBMITTER: Ma M 

PROVIDER: S-EPMC10246696 | biostudies-literature | 2023 Jun

REPOSITORIES: biostudies-literature