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Cross-linkable Polymer Matrix for Enhanced Thermal Stability of Succinonitrile-based Polymer Electrolyte in Lithium Rechargeable Batteries

  • Ryou, Myung-Hyun (Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology) ;
  • Lee, Dong-Jin (Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology) ;
  • Lee, Je-Nam (Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology) ;
  • Lee, Hong-Kyeong (Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology) ;
  • Seo, Myung-Won (Department of Applied Chemistry, Hanbat National University) ;
  • Lee, Hye-Won (Department of Applied Chemistry, Hanbat National University) ;
  • Shin, Weon-Ho (Graduate School of EEWS (WCU), Korea Advanced Institute of Science and Technology) ;
  • Lee, Yong-Min (Department of Applied Chemistry, Hanbat National University) ;
  • Choi, Jang-Wook (Graduate School of EEWS (WCU), Korea Advanced Institute of Science and Technology) ;
  • Park, Jung-Ki (Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology)
  • Received : 2011.12.03
  • Accepted : 2011.12.27
  • Published : 2011.12.31

Abstract

A polymer electrolyte was prepared by using polyvinylidenefluoride-co-hexafluoropropylene (PVdF-HFP) or poly(ethylene glycol) dimethacrylate (PEGDMA) as polymer matrices, succinonitrile as an additive, and lithium perchlorate as a lithium salt. Compared to the polymer electrolyte employing PVdF-HFP, the PEGDMA-based polymer electrolyte exhibits substantially superior thermal stability when exposed to high temperatures. Nonetheless, the ionic conductivity of the PEGDMA-based polymer electrolyte was preserved in a wide temperature range between $-20^{\circ}C$ and $80^{\circ}C$.

Acknowledgement

Grant : Human Resource Training Project for Regional Innovation

Supported by : National Research Foundation of Korea, Korea Science & Engineering Foundation (KOSEF)

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