Super Soft All-Ethylene Oxide Polymer Electrolyte for Safe All-Solid Lithium Batteries

Scientific Reports
Luca PorcarelliJijeesh Ravi Nair

Abstract

Here we demonstrate that by regulating the mobility of classic -EO- based backbones, an innovative polymer electrolyte system can be architectured. This polymer electrolyte allows the construction of all solid lithium-based polymer cells having outstanding cycling behaviour in terms of rate capability and stability over a wide range of operating temperatures. Polymer electrolytes are obtained by UV-induced (co)polymerization, which promotes an effective interlinking between the polyethylene oxide (PEO) chains plasticized by tetraglyme at various lithium salt concentrations. The polymer networks exhibit sterling mechanical robustness, high flexibility, homogeneous and highly amorphous characteristics. Ambient temperature ionic conductivity values exceeding 0.1 mS cm(-1) are obtained, along with a wide electrochemical stability window (>5 V vs. Li/Li(+)), excellent lithium ion transference number (>0.6) as well as interfacial stability. Moreover, the efficacious resistance to lithium dendrite nucleation and growth postulates the implementation of these polymer electrolytes in next generation of all-solid Li-metal batteries working at ambient conditions.

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Citations

Jul 30, 2016·International Journal of Molecular Sciences·Marie-Alix PizzoccaroAnne Julbe
Nov 4, 2016·The Journal of Physical Chemistry Letters·Xuewei FuWei-Hong Zhong
Jun 7, 2017·Advanced Materials·Yanpeng GuoTianyou Zhai
Feb 26, 2019·Chemphyschem : a European Journal of Chemical Physics and Physical Chemistry·Mark A RoseStephen A Morin
Nov 30, 2019·Materials·Alain MaugerKarim Zaghib
Apr 7, 2020·Macromolecular Rapid Communications·Fengquan LiuLin Li
Apr 26, 2019·Chemistry : a European Journal·Yao-Yao WangJing-Ping Zhang
Sep 16, 2016·Advanced Materials·Leigang XueJohn B Goodenough
Mar 1, 2019·ChemistryOpen·Nicolas DelaporteKarim Zaghib
Jul 16, 2019·The Journal of Chemical Physics·Michael D GalluzzoNitash P Balsara
Jul 14, 2019·Nature Communications·Snehashis ChoudhuryLynden A Archer
Oct 21, 2017·Chemistry : a European Journal·Peng ZhangTetsuro Majima
Jun 13, 2018·Proceedings of the National Academy of Sciences of the United States of America·Snehashis ChoudhuryLynden A Archer
Aug 14, 2020·ACS Applied Materials & Interfaces·Jed D LaCosteLing Fei
Dec 12, 2019·ACS Applied Materials & Interfaces·Vidyanand VijayakumarJijeesh Ravi Nair

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Methods Mentioned

BETA
differential scanning calorimetry
scanning
X-ray

Software Mentioned

Electrochemistry Power Suite

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