Journal
JOURNAL OF MEMBRANE SCIENCE
Volume 550, Issue -, Pages 399-406Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.memsci.2018.01.017
Keywords
Gel polymer electrolyte; Ester groups; Stable cycling; Shuttle effect; SEI film
Categories
Funding
- National Natural Science Foundation of China Program [21473228]
- Qingdao Key Lab of Solar Energy Utilization and Energy Storage Technology
- Strategic Priority Research Program of the Chinese Academy of Sciences [XDA09010105]
- Shandong Provincial Natural Science Foundation, China [ZR2015QZ01]
- 135 Projects Fund of CAS-QIBEBT Director Innovation Foundation
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Gel polymer electrolyte (GPE) is promising to accomplish high energy density and high safe lithium-sulfur (Li-S) batteries owing to their higher ionic conductivity than solid electrolyte and lower mobility than liquid electrolyte. Herein, a novel polyethylene (PE) separator supported GPE rich in ester groups was synthesized via in-situ polymerized pentaerythritol tetraacrylate (PETEA) with divinyladipate (Ester) on PE separator. This novel PE supported GPE (PEGPE) achieved a decent ionic conductivity of 2.8x10(-4) S cm(-1) at room temperature and exhibited a wide electrochemical window up to 4.75 V vs Li/Li+. The assembled Li-S battery using this novel PEGPE delivered better rate capability and cycling stability than liquid electrolyte. Our work presents a reliable and efficient GPE enabling high energy density and high safe Li-S batteries, which would boost the practical application of Li-S batteries.
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