The Competition Between Cation-Anion and Cation-Triglyme Interaction in Solvate Ionic Liquids Probed by Far Infrared Spectroscopy and Molecular Dynamics Simulations.

ABSTRACT: Glyme-based electrolyte solutions provide new concepts for developing suitable lithium-ion batteries. The so-called solvate ionic liquids (SILs) are promising electrolytes. They are most efficient in equimolar mixtures of lithium bis(trifluoromethanesulfonyl)imide ([Li][NTf₂]) and glyme, wherein the [Li]⁺ cation is supposedly fully solvated by glyme molecules. Here, we performed far (FIR) and mid (MIR) infrared spectroscopy for probing the solvation and local structures around the [Li]⁺ ions. In particular, we studied the competition between the triglyme molecule (G3) and the salt anions for the coordination to the lithium cations with increasing [Li][NTf₂] concentration. The formation of nano structures in the [Li][NTf₂]:G3 mixtures i

SUBMITTER: Kristin Philipp J 

PROVIDER: S-EPMC11906275 | biostudies-literature | 2025 Mar

REPOSITORIES: biostudies-literature