Abstract
In the present article, a simple technique is provided for the fabrication of a polymer electrolyte system composed of polyvinyl chloride (PVC) and doped with varying content of ammonium iodide (NH4I) salt using solution-casting methodology. The influences of NH4I on the structural, electrochemical, and electrical properties of PVC have been investigated using X-ray diffraction, electrochemical impedance spectroscopy (EIS), and dielectric properties. The X-ray study reveals the amorphous nature of the polymer–salt complex. The EIS measurement revealed an ionic conductivity of 5.57 × 10−10 S/cm for the electrolyte containing 10 wt.% of salt. Our hypothesis is provided, which demonstrated the likelihood of designing highly resistive solid electrolytes using the concept of a polymer electrolyte. Here, the results showed that the resistivity of the studied samples is not dramatically decreased with increasing NH4I. Bode plots distinguish the decrease in resistance or impedance with increasing salt contents. Dielectric measurements revealed a decrease in the dielectric constant with the increase of NH4I content in the PVC polymer. The relaxation time and dielectric properties of the electrolytes confirmed their non-Debye type behavior. This pattern has been validated by the existence of an incomplete semicircle in the Argand plot. Insulation materials with low εr have found widespread applications in electronic devices due to the reduction in delay, power dissipation, and crosstalk. In addition, an investigation of real and imaginary parts of electric modulus leads to the minimized electrode polarization being reached.
Highlights
This article is an open access articleDielectric materials with outstanding properties, such as high ε0, low ε00, and high electric breakdown strength are desired eagerly for their potential energy storage application [1].The research on polymer materials has further enhanced with the advances in science and technology
We discovered that our polymer-based samples exhibit low-k of ε0 = 1.15 at high frequencies, which can be considered as a novel way for designing polymers with low dielectric constants
The structural behavior of solid polymer electrolytes based on polyvinyl chloride (PVC)-NH4I has been carried out using an X-ray diffraction pattern
Summary
Dielectric materials with outstanding properties, such as high ε0 , low ε00 , and high electric breakdown strength are desired eagerly for their potential energy storage application [1]. The first method involves the reduction of molecular polarizability by opting for the suitable chemical elements for preparing such materials. Those atoms with appropriate electronegativity are exploited to induce molecular polarizability, and two factors have been taken into consideration. The use of electrical impedance spectroscopy has been confirmed as a unique tool suitable for studying the electrical and dielectric properties of polymeric materials [16–20]. An innovative strategy to create low-k polymeric film is presented in this paper On this matter, we discovered that our polymer-based samples exhibit low-k of ε0 = 1.15 at high frequencies, which can be considered as a novel way for designing polymers with low dielectric constants. As far as we know, this is the first article that demonstrates the limitations of a PVC polymer in the preparation of PEs, but it may be considered as a first report on the usage of PEs with high resistance and low-k
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