6533b7d7fe1ef96bd1268ff4

RESEARCH PRODUCT

Mesoscopic structural organization in fluorinated pyrrolidinium-based room temperature ionic liquids

Giovanni Battista AppetecchiAlessandro TrioloLorenzo GontraniE. SimonettiF. Lo CelsoOlga RussinaUwe Keiderling

subject

Materials sciencefluorinated02 engineering and technologyElectrolyteNeutron scattering010402 general chemistrymicroscopic01 natural sciencesionic liquidschemistry.chemical_compoundMolecular dynamicsSettore CHIM/02Materials ChemistrymesoscopicPhysics::Chemical PhysicsPhysical and Theoretical ChemistryImideSpectroscopyMesoscopic physicsStructural organizationscatteringionic liquids; fluorinated; microscopic; mesoscopic; scattering; simulation021001 nanoscience & nanotechnologyCondensed Matter PhysicssimulationAtomic and Molecular Physics and OpticsLithium battery0104 chemical sciencesElectronic Optical and Magnetic MaterialschemistryChemical physicsOthersIonic liquidionic liquids structural organization0210 nano-technology

description

Abstract In this contribution the microscopic and mesoscopic structural organization in a series of fluorinated room temperature ionic liquids, based on N-methyl-N-alkylpyrrolidinium cations and on bis(perfluoroalkylsulfonyl)imide anions, is investigated, using a synergy of experimental (X-ray and neutron scattering) and computational (Molecular Dynamics) techniques. The proposed ionic liquids are of high interest as electrolyte media for lithium battery applications. Together with information on their good ion transport properties in conjunction with low viscosity, we also describe the existence of nm-scale spatial organization induced by the segregation of fluorous moieties into domains. This study shows the strong complementarity between X-ray/neutron scattering in detecting the complex segregated morphology in these systems at mesoscopic spatial scales and MD simulations in successfully delivering a robust description of the segregated morphology at atomistic level.

yearjournalcountryeditionlanguage
2019-09-01
10.1016/j.molliq.2019.111110http://hdl.handle.net/10447/361076