Impact of EC-plasticizer on electrical and dielectrical properties of PEO/PVdF/NaNO3 solid polymer electrolyte systems

Yalla, Malla Reddy; Jeedi, Venkata Ramana; Devi, S. Shashi; Reddy, S. Narender; A, SADANANDA CHARY

doi:10.1007/s12034-023-03007-0

Cited by 1 publication

(1 citation statement)

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“…They help to reduce the side effects of dendritic growth on sodium (Na) anode and their inert nature minimizes leakage problems. Furthermore, SPEs also have advantages in terms of decreased contact resistance, increased mechanical strength, flexibility, adaptability, lightweight design, and cost-effectiveness [2][3][4][5][6]. SPEs perform the dual function of separators and electrolytes.…”

Section: Introductionmentioning

confidence: 99%

Investigating Ion Conduction Mechanism and Dielectric Characteristics of Sodium-Based PEO + PVDF-HFP Solid Polymer Electrolyte Membranes

Ravi Varma,

Kumar Ganta,

Ramana Jeedi

et al. 2024

J. Phys.: Conf. Ser.

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This paper focuses on the preparation, characterization and dielectric studies of the flexible and free-standing solid polymer electrolyte membranes based on PEO + PVDF-HFP complexed with NaPF6 by the solution casting technique. The X-ray diffraction, Differential scanning calorimetry techniques were employed to analyse the structural properties and melting temperatures of the prepared solid polymer electrolyte membranes. In this study, we have explored the impact of polymer blending. The weight percentages of PEO and PVDF-HFP were systematically varied, while keeping the NaPF6 weight percentage constant. The impedance spectra of the prepared solid polymer electrolyte membranes are recorded using the N4L-PSM1735 Impedance Analysis Interface across a frequency range spanning from 1 Hz to 30 MHz. The obtained impedance spectroscopy data facilitated the determination of bulk resistance (R b ) and enabled an in-depth exploration of the dielectric and electrical modulus characteristics of the prepared solid polymer electrolyte membranes. Ionic conductivity values are derived through the analysis of bulk resistance (R b ) measurements. The most notable ionic conductivity value of 5.418x10−7 S/cm at room temperature was achieved with the solid polymer electrolyte membrane 70wt%PEO+30wt%PVDF-HFP+3wt%NaPF6. In this study, the solid polymer electrolyte membrane comprising 70wt%PEO, 30wt%PVDF-HFP, and 3wt%NaPF6 emerged as the optimum conducting composition.

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