Simulations of swollen, self-assembled single-ion-conducting multiblock copolymers

ORAL

Abstract

Polymer electrolytes are valued for their improved stability and mechanical properties over traditional organic solvent electrolytes. Unfortunately, polymer electrolytes often suffer from low conductivities due to coupling between ions and slow-moving polymer segments. In this work we study self-assembled single-ion-conducting multiblock copolymers that are swollen with solvents and that show improved lithium-ion conductivity over dry materials. We use a combination of experimental techniques and molecular dynamics simulations to understand the improved conductivity and changes in the self-assembled microstructure from added solvent.

* This work was performed, in part, at the Center for Integrated Nanotechnologies, an Office of Science User Facility operated for the U.S. Department of Energy (DOE) Office of Science. Sandia National Laboratories is a multimission laboratory managed and operated by National Technology & Engineering Solutions of Sandia, LLC, a wholly owned subsidiary of Honeywell International, Inc., for the U.S. DOE’s National Nuclear Security Administration under contract DE-NA-0003525. The views expressed in the article do not necessarily represent the views of the U.S. DOE or the United States Government.

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Presenters

  • Mark J Stevens

    Sandia National Laboratories

Authors

  • Mark J Stevens

    Sandia National Laboratories

  • Amalie L Frischknecht

    Sandia National Laboratories

  • Daniel L Vigil

    Sandia National Laboratories

  • Benjamin T Ferko

    University of Pennsylvania

  • Karen I Winey

    University of Pennsylvania