High-performing, flame-resistant gel polymer electrolytes derived from PMMA side chain grafted P(VDF-HFP) based nanocomposite membranes for lithium-ion batteries
Source abstract
Abstract
We report on high-performance gel polymer electrolytes (GPEs) with outstanding physical, electrical, electrochemical, and fire-resistant characteristics. These GPEs are derived from porous nanocomposite polymer membranes developed by grafting PMMA side chains onto the backbone of the P(VDF-HFP) copolymer, followed by blending with varying amounts of imidazolium ionic liquid (IL) functionalized SiO2 nanoparticles. The GPE exhibits outstanding ion conductivity of 6.09 mS cm–1 with an appreciable lithium ion transference number (0.55) at room temperature. The Li/LiFePO4 cell assembled with the GPE exhibits remarkable interfacial compatibility with the Li anode and LiFePO4 cathode. The cell delivers a high reversible capacity of ~129 mAh g-1 at 2C and high discharge capacities of 155.9 and 141.2 mAh g-1 after consecutive 40 and 60 cycles at C/3 and 1C rates, respectively. With its improved electrochemical performances and high level of safety, the as-developed GPE has a lot of promise for use in LIBs.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Advancements in Battery Materials · Advanced Battery Materials and Technologies · Advanced Battery Technologies Research
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