Jump to main content
Jump to site search


Poly(vinylidene fluoride)-based hybrid gel polymer electrolytes for additive-free lithium sulfur batteries

Author affiliations

Abstract

The permeation of dissolved lithium polysulfides across the porous polyolefin-based commercial separator is a major hindrance for using lithium sulfur batteries (LSBs). In this work, the poly(vinylidene fluoride) (PVDF)-based gel polymer electrolyte (GPE) with a compact morphology to block polysulfide penetration is prepared using a simple solution-casting method, and the strategy of incorporating poly(ethylene oxide) and nano zirconium dioxide is applied to guarantee electrolyte uptake and Li+ mobility. Superior to the commercial separator with liquid electrolyte, the LSB assembled with additive-free GPE exhibits a high initial capacity of 1429 mA h g−1, coulombic efficiency of 96% at 0.2C and improved rate performance. After 500 cycles at 1C, the LSB could still deliver a capacity of 847.2 mA h g−1, with a low fading rate of 0.05%. The LSB with high sulfur loading (5.2 mg cm−2) could attain a high areal capacity of 4.6 mA h cm−2. Results of scanning electron microscopy suggest that such a hybrid GPE could effectively protect the lithium anode from polysulfide corrosion. Therefore, this novel membrane of hybrid PVDF-based GPE provides a simple and effective method to establish high-performance LSBs.

Graphical abstract: Poly(vinylidene fluoride)-based hybrid gel polymer electrolytes for additive-free lithium sulfur batteries

Back to tab navigation

Supplementary files

Publication details

The article was received on 13 Jun 2017, accepted on 25 Jul 2017 and first published on 25 Jul 2017


Article type: Paper
DOI: 10.1039/C7TA05145J
Citation: J. Mater. Chem. A, 2017, Advance Article
  •   Request permissions

    Poly(vinylidene fluoride)-based hybrid gel polymer electrolytes for additive-free lithium sulfur batteries

    S. Gao, K. Wang, R. Wang, M. Jiang, J. Han, T. Gu, S. Cheng and K. Jiang, J. Mater. Chem. A, 2017, Advance Article , DOI: 10.1039/C7TA05145J

Search articles by author

Spotlight

Advertisements