Correlating ionic conductivity and nanoscale morphology of backbone type polymerized ionic liquids

ORAL

Abstract

Polymerized ionic liquids (PILs) are single ion conducting ionomers in which one ionic species (typically the anion) is free for transport, while the other is either located directly in the polymer chain (backbone PILs) or as a pendant group off the main chain (pendant PILs). In this study, backbone PILs with 3-methyl-pentyl spacers between the imidazolium cation and varying counter anions [trifluoromethane sulfonyl imide (TFSI-), nonafluorobuthane sulfonate (NfO-), and 1,1,2,2,3,3-hexafluoropropane-1,3-disulfonimide (CPFSI-)] were synthesized. Tg-independent ionic conductivities were then characterized using broadband dielectric spectroscopy and correlated to morphology by wide-angle X-ray scattering. It was found that changing the size of the counter anion can yield an up to 1.5 order of magnitude difference in Tg-independent ionic conductivity. Moreover, after comparing these results to pendant PILs of equivalent structure, it was found that backbone PILs result in a lower ionic conductivity, suggesting that pendant PILs yield a more correlated path for charge transport.

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Presenters

  • Preeya Kuray

    Materials Science and Engineering, Pennsylvania State University

Authors

  • Preeya Kuray

    Materials Science and Engineering, Pennsylvania State University

  • Alexey Feofanov

    University of Innsbruck, University of Waterloo, Korea University, Okinawa Institute of Science and Technology, University of California - Los Angeles, The University of Manchester, University of Puerto Rico at Humacao, Department of Physics & Electronics, University of Puerto Rico at Cayey, Department of Mathematics-Physics, Oak Ridge National Lab, Max Planck Institute for Chemical Physics of Solids, Department of Physics, University of Puerto Rico, Electrical Engineering Department, University of Arkansas, Department of Physics, University of Arkansas, School of Basic Sciences at IIT Mandi, H.P., India, Computational Biology, Flatiron Institute, Physics, Hong Kong Univ of Sci & Tech, University of California, Los Angeles, Max Planck Inst, Institute for Theoretical Physics, University of Cologne, Department of Physics, Simon Fraser University, Deutsches Elektronen Synchrotron (DESY), Institut fur Theoretische Physik, Univerisitat zu Berlin, Institut fur Physik, Univerisitat zu Berlin, Plymouth State University, The Graduate Center, CUNY, Nordita, KTH Royal Institute of Technology and Stockholm University, Univ of Connecticut - Storrs, Univ Stuttgart, University of Chicago, University of Texas at El Paso, University of Tulsa, California Institute of Technology, Georgia Institute of Technology, Universite Paris Diderot, Laboratoire MPQ, Universita di Trento, BEC Center, ICTP Trieste, Universita di Pisa, Inst of Physics Academia Sinica, Batelle, Cal State Univ- San Bernardino, Chemical Engineering, University of Michigan, QCD Labs, Department of Applied Physics, Aalto University, Yale University, MIT, Harvard Univ, Chemical & Environmental Engineering, University of California, Riverside, University of Frankfurt, Germany, University of Hamburg, Germany, Naval Research Laboratory, Cornell Univ, National Institute for Material Science, U.S. Naval Research Laboratory, Washington DC, Materials Engineering, University of Santa Barbara, Institute of Physics, Chinese Academy of Sciences, Univ of Texas, Arlington, MIT Lincoln Laboratory, University of Sydney, Iowa State University, Purdue University, Kansas State University, University of Maryland, John Hopkins University, Universite de Sherbrooke, Physics, Konkuk University, Perimeter Institute, University of Waterloo, D-Wave, San Jose State University, Université de Sherbrooke, Institute of Physics, EPFL - Lausanne​

  • Takeru Noda

    Department of Macromolecular Science, Osaka University

  • Ciprian Iacob

    Materials Science and Engineering, Pennsylvania State University, Department of Materials Science and Engineering, Pennsylvania State University

  • Natalie Mamroi

    Materials Science and Engineering, Pennsylvania State University

  • Tadashi Inoue

    Department of Macromolecular Science, Osaka University

  • James Runt

    Materials Science and Engineering, Pennsylvania State University, Department of Materials Science and Engineering, Pennsylvania State University