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Preparation and performance of a composite polyimide/poly(vinylidene fluoride-co-hexafluoropropylene)/nano-Al2O3 polymer electrolyte for lithium-sulfur cell

  • Mumin Rao
  • , Xiaogang Li
  • , Youhao Liao
  • , Xiaoping Li
  • , Weishan Li*
  • *Corresponding author for this work
  • South China Normal University
  • Ltd
  • South China University of Technology

Research output: Contribution to journalArticlepeer-review

Abstract

A novel gel polymer electrolyte (GPE) based on an electrospun polymer membrane of polyimide (PI) activating with poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP) and further coating with nano-Al2O3 was prepared, and its performance for lithium-sulfur (Li-S) cell was investigated. It is found that the Li-S cell using the new GPE enabled achieving a stable discharge capacity of 820 mAh g−1 after more than 100 cycles. This new GPE system with activating with PVDF-HFP and further coating with nano-Al2O3 was capable of upholding the electrolyte solution and can suppress the dissolution of the intermediate products generated during the discharge process and thus improves the performance of Li-S cell.

Original languageEnglish
Pages (from-to)1937-1943
Number of pages7
JournalIonics
Volume21
Issue number7
DOIs
StatePublished - 25 Jul 2015
Externally publishedYes

Keywords

  • Gel polymer electrolyte
  • Lithium sulfur cell
  • Nano-AlO
  • Poly(vinylidene fluoride-co-hexafluoropropylene)
  • Polyimide

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