![]() XRD showed that NaI incorporation decreased the crystallinity of NaCMC/PVA-based SPE. The films were characterized by Fourier-transform infrared spectroscopy (FTIR), X-Ray diffraction (XRD), electrical impedance spectroscopy, thermogravimetric analysis (TGA), and differential scanning calorimetry (DSC). Solution casting approach was used to prepare solid polymer electrolyte (SPE) films. In this paper, we report the effect of doping sodium iodide (NaI) salt into a polymer blend matrix of sodium carboxymethyl cellulose (NaCMC) and poly(vinyl alcohol) (PVA). Self-extinguishing time for pure+salt displays ⁓ 41 s g⁻¹ whereas in the case of P圓% PCCE it has a value ⁓ 6 s g⁻¹. P圓% film demonstrated considerable flame retardation that was stable over several ignitions. ![]() To ensure the safety of our prepared energy storage systems, we tested films for flame retardancy and dimensional stability. The proposed PCCE system's open circuit voltage was 1.7 V, and the discharge characteristics of a primary sodium battery built with a high-conductivity electrolyte system (P圓%) were thoroughly examined. The LSV technique determined the potential window for the P圓% PCCE system to be 3 V, indicating that it could be used in energy storage applications. The highest conducting sample (P圓%) had an ion transference number (tion) of 0.919, indicating that the current system was ion-dominant with a small amount of electron participation. It was found that P圓% was least crystalline with highest ionic conductivity 3.25 × 10⁻⁴ S/cm which is strongly influenced by the highest charge concentration (n), not its mobility (μ). Between these two values, the value for P圓% was ascertained. #FITYK PEAK FITTING FREE#For 7wt%, 1wt% Y2O3 nanoparticle loading (Py7%, Py1%) in the PCCE matrix, the positron lifetime parameters o-Ps lifetime (τ3) and free volume size (Vf) showed a minimum (Py7%) and maximum value (Py1%). The elemental composition and mapping were confirmed by the presence of Y2O3 and NaClO4 particles. From SEM studies, the morphology was observed to be smoother, homogeneous, and coherent for the pure+salt PCCE system after addition of Y2O3 nanoparticles to the matrix, In P圓% system, the nanoparticles were randomly linearly aligned due to inter- and intramolecular bonding. Chemical interactions between the PVA/NaClO4 matrix and yttrium ions were revealed using FTIR studies. The XRD results revealed a change in crystallinity. This study aimed to develop a framework to investigate the structural, dielectric, and transport properties of a sequence-based PVA matrix polymer ceramic composite electrolyte system with sodium perchlorate (NaClO4) and yttrium oxide (Y2O3) as nanofillers. This might be due to a change (increase) in the carrier concentration. The Nyquist plot for dielectric measurement was investigated, and an equivalent circuit model was used to evaluate variables such as carrier concentration, mobility, and diffusion coefficient/ diffusivity Ionic conductivity of 2.77 × 10−7 S cm−1 was recorded for the ZrO2/PVA sample. ![]() The positron trapping rate increased for ZrO2/PVA polymer ceramic composite (PCC), which indicated that both volume expansion and vacancy trapping effects occur when the positrons are effectively trapped at vacancies. ZrO2 nanoparticles had a better interfacial interaction with the PVA matrix, which resulted in a higher and shorter o-Ps lifetime. ![]() ![]() Positron annihilation lifetime profile showed identical behavior for, , and their intensities. Threadlike chains and scattershot crystal morphologies were seen in AFM images, and the PVA/ZrO2 has the lowest level of roughness (1.27 nm). ZrO2 added sample shows the lowest degree of crystallinity with the least free volume compared to pristine PVA. Changes in IR bands revealed the interaction of nanofillers with the PVA matrix. X-ray diffraction, Fourier transform infrared spectroscopy (FTIR), and atomic force microscopy (AFM) were used for the study of structural, chemical composition (functional groups), and morphological properties. This article presents a comparative analysis of three distinct zirconia-inserted polyvinyl alcohol (PVA) polymer matrices. ![]()
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