Polymers (Oct 2020)

Double-Crosslinked Polyurethane Acrylate for Highly Conductive and Stable Polymer Electrolyte

  • Han-Na Kim,
  • Kyung-Geun Kim,
  • Yeon Uk Jeong,
  • Sung Yeol Kim

DOI
https://doi.org/10.3390/polym12112557
Journal volume & issue
Vol. 12, no. 11
p. 2557

Abstract

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High ionic conductivity and good stability are major factors that influence the use of polymer electrolytes in electrochemical storage and conversion devices. In this study, we present polyurethane acrylate (PUA) membranes having enhanced ionic conductivity and swelling stability by double crosslinking the polyurethane (PU) and polyacrylate (PA) compartments. The crosslinking agent concentration was varied to control their mechanical properties, swelling stability, and ionic conductivity. Under optimum conditions, the electrolyte uptake of the double-crosslinked PUA membranes without notable defects was 245%. The maximum ionic conductivity of these membranes reached 9.6 mS/cm, which was higher than those with respect to most of the previously reported PUA- or PU-based polymer electrolytes.

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