A study on PVDF-HFP gel polymer electrolyte for lithium-ion batteries

W. LIU*, X. K. ZHANG, F. WU, Y. XIANG

*Corresponding author for this work

Research output: Journal PublicationsJournal Article (refereed)peer-review

45 Citations (Scopus)

Abstract

In this paper, poly (vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP) gel polymer electrolyte was fabricated via solvent casting method in order to improve the performance of the lithium-ion batteries. By comparing the physical and electrochemical properties of PVDF-HFP gel polymer electrolyte with three different proportions, the optimization of the PVDF-HFP gel polymer electrolyte was obtained: 10wt% PVDF-HFP - 80wt% tetrahydrofuran (THF) / acetone - 10wt% 1mol L-1 lithium perchlorate (LiClO4) in elthylene carbonate (EC) and diethyl carbonate (DEC). The optimized PVDF-HFP gel polymer electrolyte displayed a high conductivity of 1.0610-3 S cm-1 at room temperature, a high lithium transference number of 0.36 and a good thermal stability within 100C. Moreover, the discharge specific capacity was 135.1 mAh g-1, and the charge / discharge efficiency was 99.1% at 0.1C rate. Therefore, the fabricated PVDF-HFP gel polymer electrolyte was an effective gel polymer electrolyte to be applied on lithium-ion batteries.

Original languageEnglish
Article number012036
Number of pages6
JournalIOP Conference Series: Materials Science and Engineering
Volume213
Issue number1
DOIs
Publication statusE-pub ahead of print - 13 Jul 2017
Externally publishedYes
Event2017 Global Conference on Polymer and Composite Materials, PCM 2017 - Guangzhou, China
Duration: 23 May 201725 May 2017

Bibliographical note

Publisher Copyright:
© Published under licence by IOP Publishing Ltd.

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