Characterization of Acetonitrile Isotopologues as Vibrational Probes of Electrolytes.

ABSTRACT: Acetonitrile has emerged as a solvent candidate for novel electrolyte formulations in metal-ion batteries and supercapacitors. It features a bright local C≡N stretch vibrational mode whose infrared (IR) signature is sensitive to battery-relevant cations (Li⁺, Mg²⁺, Zn²⁺, Ca²⁺) both in pure form and in the presence of water admixture across a full possible range of concentrations from the dilute to the superconcentrated regime. Stationary and time-resolved IR spectroscopy thus emerges as a natural tool to study site-specific intermolecular interactions from the solvent perspective without introducing an extrinsic probe that perturbs solution morphology and may not represent the intrinsic dynamics in these electrolytes. The metal-coordinated aceton

SUBMITTER: Dereka B 

PROVIDER: S-EPMC8762666 | biostudies-literature | 2022 Jan

REPOSITORIES: biostudies-literature