article · Discover Materials
Thin polymeric films made of poly(vinylidene fluoride) combined with varying amounts of lithium zinc vanadate nanoparticles were created through a solution casting method. Structural, optical, and electrical properties were assessed using X-ray diffraction, infrared spectroscopy, ultraviolet-visible spectroscopy, and dielectric measurements. Analysis confirmed the crystalline rhombohedral structure of the 83-nanometre nanoparticles and verified chemical interaction between the polymer matrix and the nanoparticles. Adding higher concentrations of nanoparticles decreased optical band gap energies, linked to alterations in localized electronic states. Testing across different frequencies and temperatures showed that dielectric permittivity values reached their highest levels at low frequencies and dropped as frequency and temperature increased. The observed shifts in structure, infrared absorption, and dielectric behaviour at peak nanoparticle concentrations suggest these flexible nanocomposite films could serve as foundation materials in lithium-ion battery components.
Developing flexible composite materials with tailored optical and electrical properties is important for advancing modern energy storage technologies. By demonstrating how the addition of specific nanoparticles alters the dielectric and structural behaviour of a standard polymer, this study provides measurable insights into designing novel solid materials that could contribute to the development of improved components for lithium-ion batteries.
The abstract suggests potential application as basic components for lithium-ion batteries, which could be relevant to battery cell manufacturers and energy storage hardware developers. However, the work remains at an early laboratory stage, focused on material synthesis and fundamental structural, optical, and dielectric characterisation without device prototyping or battery cycle testing.
AI-generated from the published abstract. Always read the original work before citing.
Abstract Thin polymeric films of poly(vinylidene fluoride) (PVDF) containing variable mass fractions of nanoparticles (LiZnVO 4 ) were successfully synthesized via the ordinary solution casting method. X-ray diffraction (XRD), Fourier transform infrared (FT-IR), and ultraviolet–visible spectroscopy were used to explore the role of LiZnVO 4 on the structural and optical characteristics of synthesized nanocomposites. In addition, dielectric permittivity (ε' and ε") and dielectric modulus (M' and M") were investigated. The XRD spectral data reveals the crystalline nature of pure LiZnVO 4 with rhombohedral structure with an average size of 83 nm calculated using the Scherrer’s equation and W-L plot. The interaction between PVDF and LiZnVO 4 was approved through the shift in characteristics in some IR bands. The decrease in band gap energies with increasing LiZnVO 4 was attributed to the change of density in the localized states within the PVDF matrix. The effect of both frequency and temperature on the AC parameters was also investigated. Both ε' and ε" had their maximum values at low frequencies and decreased as the frequency and temperature increased. The results from XRD and FT-IR were correlated with changes in the dielectric characteristics at the maximum level value of LiZnVO4, suggesting the potential of these materials as basic components for lithium-ion batteries.
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DOI: 10.1007/s43939-023-00053-7
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