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- In relation to this article, we declare that there is no conflict of interest.
- Publication history
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Received August 7, 2023
Accepted March 6, 2024
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This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits
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Impact of KNO 3 Concentration on Structural Properties, Dielectric and AC Conductivity Response of 80 PEO:20 PVDF Blend Polymer Electrolytes
Abstract
Due to the limited availability and unequal distribution of lithium resources, a thorough investigation into the viability and
fi nancial feasibility of using lithium as a long-term, sustainable solution has been initiated. Our work was focused to prepare
the solid polymer electrolyte systems using solvent cast technique and the ionic conductivity, dielectric properties were
studied using impedance spectroscopy from 1 Hz to 10 MHz at various temperatures. XRD (X-ray diff ractogram) and FTIR
(Fourier transform infrared) characterization techniques have been carried out to confi rm the electrolytes' complexation and
functional groups, respectively. Morphological study and thermal analysis have been studied using SEM (scanning electron
microscopy) and DSC (diff erential scanning calorimetry). The dielectric response of the samples was examined through
dielectric constant ( ε ′), dielectric loss ( ε ″), modulus ( M ′ and M ″) and relaxation time ( τ ). The electrical properties of polymer
electrolytes complexed with salt concentration were changed remarkably. The ionic conductivity of KNO 3 -complexed
polymer electrolytes has been enhanced and the maximum ionic conductivity (3.19 × 10 –5 S/cm) was noticed for 3 wt% of
KNO 3 which could be attributed to high dissociation and maximum movement of ions.
