Physical Insights into Ion Conduction in Polymeric Systems

ORAL

Abstract

Polymerized ionic liquids (PolyILs) are promising candidates for a broad range of applications. However, relatively low ionic conductivity limits their current use, and fundamental understanding of mechanisms controlling ion transport in PolyILs is critical for their rational design. In this talk, we present analysis of several PolyILs with different chemical structures and ion size. Combining results of dielectric spectroscopy with differential scanning calorimetry and nuclear magnetic resonance we analyzed the charge and mass transport of several different PolyILs. Based on Random Barrier Model, we demonstrate that conductivity relaxation provides information on ion diffusion and the magnitude of cross-correlations effects between ionic motions. We propose a model that estimates ionic diffusivity from characteristic times of the conductivity relaxation process and ionic concentration [1].

1. C. Gainaru, et al., J. Phys. Chem. B 120, 11074 (2016)

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Presenters

  • Eric Stacy

    • Department of Physics and Astronomy , Univ of Tennessee, Knoxville

Authors

  • Eric Stacy

    • Department of Physics and Astronomy , Univ of Tennessee, Knoxville

  • Catalin Gainaru

    • Department of Chemistry, University of Tennessee

  • Vera Bocharova

    • Oak Ridge National Laboratory
    • Chemical Sciences Division , Oak Ridge National Laboratory

  • Tomonori Saito

    • Chemical Sciences Division , Oak Ridge National Laboratory
    • Chemical Sciences Department, Oak Ridge National Laboratory

  • Zaneta Wojnarowska

    • Chemical Sciences Division , Oak Ridge National Laboratory

  • Adam Holt

    • Department of Physics and Astronomy , Univ of Tennessee, Knoxville

  • Steven Greenbaum

    • Department of Physics and Astronomy, Hunter College of the City University of New York
    • Hunter College

  • Mallory Gobet

    • Department of Physics and Astronomy, Hunter College of the City University of New York

  • Alexei Sokolov

    • Oak Ridge National Laboratory
    • Department of Chemistry, University of Tennessee
    • Univ of Tennessee, Knoxville
    • Chemical Sciences Department, Oak Ridge National Laboratory