Covalently Linked Polymer/Inorganic Hybrid Electrolyte with Ionic Liquid for Lithium Metal Batteries. Issue 32 (26th August 2021) - Song, Yaduo
Abstract: 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 (tLi+ =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. Abstract : A type of Polymer/inorganic hybrid electrolyte (PIHE) was prepared by polyaddition method with covalently bonded ionic liquid structure. PIHE shows high room temperature ionic conductivity, high lithium‐ion transference number, good interfacial stability with lithium electrode, and electrochemical stability.