Liquid Structure of a Water-in-Salt Electrolyte with a Remarkably Asymmetric Anion.

ABSTRACT: Water-in-salt systems, i.e., super-concentrated aqueous electrolytes, such as lithium bis(trifluoromethanesulfonyl)imide (21 mol/kg_water), have been recently discovered to exhibit unexpectedly large electrochemical windows and high lithium transference numbers, thus paving the way to safe and sustainable charge storage devices. The peculiar transport features in these electrolytes are influenced by their intrinsically nanoseparated morphology, stemming from the anion hydrophobic nature and manifesting as nanosegregation between anions and water domains. The underlying mechanism behind this structure-dynamics correlation is, however, still a matter of strong debate. Here, we enhance the apolar nature of the anions, exploring the properties of the aqueous electrolytes of lithium s

SUBMITTER: Triolo A 

PROVIDER: S-EPMC9282637 | biostudies-literature | 2021 Nov

REPOSITORIES: biostudies-literature