Flexible poly(vinylidene fluoride-co-hexafluoropropylene)-based gel polymer electrolyte for high-performance lithium-ion batteries

Pan Zhang, Rui Li, Jian Huang, Boyu Liu, Mingjiong Zhou, Bizheng Wen, Yonggao Xia, Shigeto Okada

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)

Abstract

Gel polymer electrolytes (GPEs) have attracted ever-increasing attention in Li-ion batteries, due to their great thermal stability and excellent electrochemical performance. Here, a flexible poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP)-based GPE doped with an appropriate proportion of the PEO and SiO2is developed through a universal immersion precipitation method. This porous PVDF-HFP-PEO-SiO2GPE with high ionic conductivity and lithium-ion transference number (tLi+) can enhance the electrochemical performance of LiFePO4cells, leading to superior rate capability and excellent cycling stability. Moreover, the PVDF-HFP-PEO-SiO2GPE effectively inhibits the lithium dendrite growth, thereby improving the safety of Li-ion batteries. In view of the simplicity in using the gel polymer electrolyte, it is believed that this novel GPE can be used as a potential candidate for high-performance Li-ion batteries.

Original languageEnglish
Pages (from-to)11943-11951
Number of pages9
JournalRSC Advances
Volume11
Issue number20
DOIs
Publication statusPublished - Mar 23 2021

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Chemical Engineering(all)

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