Impact of Ionic Liquid Functionalized ZrO2 Nanoparticles on Poly (stearyl methacrylate) Grafted Poly (vinylidene fluoride-co-hexafluoropropylene) Based Highly Conductive Gel Polymer Electrolytes for Lithium-Metal Batteries

Parui, R and Deb, D and Bose, P and Bhattacharya, S (2024) Impact of Ionic Liquid Functionalized ZrO2 Nanoparticles on Poly (stearyl methacrylate) Grafted Poly (vinylidene fluoride-co-hexafluoropropylene) Based Highly Conductive Gel Polymer Electrolytes for Lithium-Metal Batteries. In: Batteries and Supercaps, 7 (5).

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Abstract

In this study, an organic-inorganic hybrid polymer membrane is successfully designed and developed by grafting stearyl methacrylate (SMA) side chains onto the backbone of the P(VDF-HFP) copolymer followed by blending with varying amounts of imidazolium ionic liquids functionalized ZrO2 nanoparticles. Different microporous gel polymer electrolytes (MGPEs) are prepared by immersing the membranes into a LiTFSI salt-dissolved ionic liquid electrolyte. The membranes� crystallinity, surface morphology, porosity, and thermal stability are investigated using various characterization techniques. The copolymer membrane blended with 60 wt functionalized nanoparticles exhibits the highest porosity of 64.5 , which allows it to achieve a maximum electrolyte uptake of 387 wt . That enables the corresponding MGPE to achieve the highest room temperature lithium ion conductivity of ~5.34�10�3 S cm�1 with a wide electrochemical stability window and good electrochemical stability against Li metal. Leveraging these advantageous characteristics, the lab-scale truly solid-state Li|MGPE|LiFePO4 and Li|MGPE|LiNi0.8Mn0.1Co0.1O2 cells demonstrate excellent rate capability and reversible cycling stability while maintaining high specific capacities (up to 154 and 172 mAh g�1, respectively, at 0.5 C) with >99.0 coulombic efficiency over 100 cycles. Such exceptional interfacial compatibility with both low- and high-voltage cathodes establishes the applicability of these newly developed MGPEs in next-generation all-solid-state lithium-metal batteries. © 2024 Wiley-VCH GmbH.

Item Type:	Journal Article
Publication:	Batteries and Supercaps
Publisher:	John Wiley and Sons Inc
Additional Information:	The copyright for this article belongs to John Wiley and Sons Inc.
Keywords:	Blending; Crystallinity; Fluorine compounds; Grafting (chemical); Ionic liquids; Iron compounds; Lithium compounds; Lithium-ion batteries; Metal ions; Metal nanoparticles; Microporosity; Morphology; Organic-inorganic materials; Polyelectrolytes; Silica nanoparticles; Solid electrolytes; Zirconia, Functionalized; Functionalized nanoparticles; Gel polymer electrolytes; Grafted copolymer nanocomposite membrane; Grafted copolymers; Interfacial compatibility; Ionic liquid functionalized nanoparticle; Microporous; Microporous gel polymer electrolyte; Nano-composite membranes, Membranes
Department/Centre:	Division of Chemical Sciences > Solid State & Structural Chemistry Unit
Date Deposited:	03 Jul 2024 06:27
Last Modified:	03 Jul 2024 06:27
URI:	http://eprints.iisc.ac.in/id/eprint/84487

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