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Covalently Linked Polymer/Inorganic Hybrid Electrolyte with Ionic Liquid for Lithium Metal Batteries
Author(s) -
Song Yaduo,
Jiang Yanxin,
Hu QingQing,
Deng Longjiang,
Yang Guang
Publication year - 2021
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.202101891
Subject(s) - electrolyte , lithium (medication) , fourier transform infrared spectroscopy , thermal stability , ionic conductivity , materials science , ionic liquid , polymer , electrochemistry , inorganic chemistry , ionic bonding , dissolution , chemical engineering , covalent bond , stripping (fiber) , metal , polymer chemistry , ion , chemistry , organic chemistry , electrode , composite material , medicine , engineering , metallurgy , endocrinology , catalysis
In this work, a type of polymer/inorganic hybrid electrolytes (PIHEs) containing imidazolium‐based ionic liquids (ILs) was prepared through polyaddition method. The obtained hybrid electrolytes possess excellent thermal stability (>240 °C), low glass transmission temperature (−46.8 °C) accompanied by good lithium ion transference number (t Li+ =0.35). The interaction of Li + ion with the HEs has been verified by Fourier Transform Infrared Spectroscopy (FTIR) tests. Furthermore, high ion conductivity (σ) of 0.97×10 −4  S cm −1 at 25 °C was found for this type of PIHEs. At the same time, stable and reversible lithium deposition and dissolution process mediated by the synthesized PIHEs was confirmed by galvanostatic plating/stripping cyclic measurements which reflected its excellent electrochemical stability. This work provides a facile way to construct PIHEs with covalent linkage and decent properties for lithium metal batteries.

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