Investigation of poly(methyl-methacrylate)-poly(acrylonitrile) blended polymer electrolytes with alumina filler for lithium-ion energy storage device
Three types of polymer electrolyte systems are fabricated based on PMMA, PAN and PAN/PMMA host polymer through the solution cast method. A consistent amount of lithium trifluoromethanesulfonate (LiCF3SO3), ethylene carbonate (EC) and aluminium oxide (Al2O3) are added to the host polymer. The mixture...
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| Format: | Thesis |
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2023
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| Summary: | Three types of polymer electrolyte systems are fabricated based on PMMA, PAN and PAN/PMMA host polymer through the solution cast method. A consistent amount of lithium trifluoromethanesulfonate (LiCF3SO3), ethylene carbonate (EC) and aluminium oxide (Al2O3) are added to the host polymer. The mixture is dissolved in solvent follows by slow drying until a thin film is formed. The polymer electrolyte film from each system will undergo different characterizations, including Electrochemical Impedance Spectroscopy (EIS), Fourier Transform Infrared Analysis (FTIR), X-ray Diffraction (XRD) and Differential Scanning Calorimetry (DSC). The performance of the battery is mainly determined by ionic conductivity which is calculated based on EIS results. The formation of chemical bonding between the host polymer and other additives is analysed through FTIR. This can be observed through the formation of new bands, absence of bands and shifting of bands in the frequency spectrum. XRD is employed to examine the crystallinity of the polymer matrix. The complete dissolution of each additive and crystallinity of the polymer electrolyte system are the factors that contribute towards ionic conductivity. Thermal properties of polymer electrolytes are observed through DSC thermograms. Both endothermic and exothermic events are crucial in ensuring the capability of polymer electrolytes to perform safely within the temperature range. |
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