A crosslinked nonwoven separator based on an organosoluble polyimide for high-performance lithium-ion batteries

  • Seoungwoo Byun
  • , Seung Hyun Lee
  • , Danoh Song
  • , Myung Hyun Ryou
  • , Yong Min Lee
  • , Won Ho Park

Research output: Contribution to journalArticlepeer-review

46 Scopus citations

Abstract

Thermostable polymers offer excellent thermal and mechanical stabilities, and in this study, an organosoluble polyimide (PI) was employed to fabricate high-performance separators for use in advanced lithium-ion batteries (LIBs). The organosoluble PI was synthesized and its nanofibrous membrane was fabricated via electrospinning. A subsequent heat treatment induced thermal crosslinking between the PI nanofibers to improve the heat resistance of the separators. PI nanofibrous membrane exhibited excellent wettability toward the liquid electrolyte, resulting in a greatly improved rate capability and cycle life. These results suggest that organosoluble PI nanofibrous membranes have a high potential for use as separators in high-performance LIBs.

Original languageEnglish
Pages (from-to)390-399
Number of pages10
JournalJournal of Industrial and Engineering Chemistry
Volume72
DOIs
StatePublished - 25 Apr 2019

Bibliographical note

Publisher Copyright:
© 2018 The Korean Society of Industrial and Engineering Chemistry

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

  1. SDG 7 - Affordable and Clean Energy
    SDG 7 Affordable and Clean Energy

Keywords

  • Electrochemical performance
  • Lithium-ion battery
  • Organosoluble polyimide
  • Separator
  • Thermal stability

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