Preparation and characterization of novel solid polymer blend electrolytes based on poly (vinyl pyrrolidone) with various concentrations of lithium perchlorate

Kesavan, K.; Mathew, Chithra M.; Rajendran, S.; Ulaganathan, Mani

doi:10.1016/j.mseb.2014.01.009

Cited by 41 publications

(16 citation statements)

References 32 publications

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“…The absorption band located near 1461 cm -1 belongs to the CH2 wagging of PVP. Furthermore, PVP presence is verified by the location of two strong absorption bands at 1348 cm -1 and 1687 cm -1 which corresponds to the C-N stretching and C=O stretching, respectively[56,64].…”

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confidence: 94%

Optimization of salt concentration and explanation of two peak percolation in blend solid polymer nanocomposite films

Arya

Sharma

2018

J Solid State Electrochem

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The present paper report is focused toward the preparation of the flexible and freestanding blend solid polymer electrolyte films based on PEO-PVP complexed with NaPF6 by solution cast technique. The structural/morphological features of the synthesized polymer nanocomposite films have been investigated in detail using X-ray diffraction, Fourier transform infra-red spectroscopy, field emission scanning electron microscope, and atomic force microscopy techniques. The film PEO-PVP+NaPF6 (Ö/Na + = 8) exhibits highest ionic conductivity ~5.92×10 -6 S cm -1 at 40 °C and ~2.46×10 -4 S cm -1 at 100 °C. The temperature dependent conductivity shows Arrhenius type behavior and activation energy decreases with the addition of salt. The high temperature (100 °C) conductivity monitoring is done for the optimized PEO-PVP+NaPF6 (Ö/Na + =8) highly conductive system and the conductivity is still maintained stable up to 160 h (approx. 7 days). The thermal transitions parameters were measured by the differential scanning calorimetry (DSC) measurements. The prepared polymer electrolyte film displays the smoother surface in addition of salt and a thermal stability up to 300 o C. The ion transference number (tion) for the highest conducting sample is found to be 0.997 and evidence that the present system is ion dominating with negligible electron contribution. Both linear sweep voltammetry and cyclic voltammetry supports the use of prepared polymer electrolyte with long-term cycle stability and thermal stability for the solid state sodium ion batteries. Finally, a two peak percolation mechanism has been proposed on the basis of experimental findings.

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confidence: 94%

Optimization of salt concentration and explanation of two peak percolation in blend solid polymer nanocomposite films

Arya

Sharma

2018

J Solid State Electrochem

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“…PEO is a widely used film-forming polymer with high tensile strength and flexibility [4,5]. PEO also exhibits many other useful properties such as chemical stability, ease of electrolyte fabrication, and excellent complexation with many ionic salts [6,7]. However, most PEO based polymer electrolytes have low conductivity due to its semicrystalline polymer nature in which, below the melting temperature of PEO at 330 K, the polymer may consist of both lamellar crystals and amorphous regions, as well as intermediate regions at the crystal/amorphous interphase [8].…”

Section: Introductionmentioning

confidence: 99%

Conductivity and Dielectric Studies of Lithium Trifluoromethanesulfonate Doped Polyethylene Oxide-Graphene Oxide Blend Based Electrolytes

Azli

Manan

Kadir

2015

Advances in Materials Science and Engineering

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Series of polymer blend consisting of polyethylene oxide (PEO) and graphene oxide (GO) as co-host polymer were prepared using solution cast method. The most amorphous PEO-GO blend was obtained using 90 wt.% of PEO and 10 wt.% of GO as recorded by X-ray diffraction (XRD). Fourier transform infrared spectroscopy (FTIR) analysis proved the interaction between PEO, GO, lithium trifluoromethanesulfonate (LiCF3SO3), and ethylene sulfite (ES). Incorporation of 25 wt.% LiCF3SO3into the PEO-GO blend increases the conductivity to3.84±0.83×10-6 S cm−1. The conductivity starts to decrease when more than 25 wt.% salt is doped into the polymer blend. The addition of 1 wt.% ES into the polymer electrolyte has increased the conductivity to1.73±0.05×10-5 S cm−1. Dielectric studies show that all the electrolytes obey non-Debye behavior.

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“…The addition of SN having polar nitrile group in its structure promotes the salt dissociation and disruption of the crystalline arrangement of the PEO chains. The reduction of peak intensity clearly indicates the addition of SN enhances the amorphous content and promotes the faster segmental motion, hence the increase of ionic conductivity in the polymer matrix [30]. To support the above conclusion, the d-spacing was obtained using the Bragg's formula 2dsin=nλ and interchain separation (R) using the equation R=5λ/8sin.…”

Section: 2x-ray Diffraction (Xrd) Analysismentioning

confidence: 87%

Tailoring the Structural, Morphological, Electrochemical, and Dielectric Properties of Solid Polymer Electrolyte

Arya¹

2018

Preprint

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Abstract:Herein, we present preparation of solid polymer electrolyte (SPE) comprising of PEO, NaPF6 and varying fraction of Succinonitrile (SN) by standard solution cast technique. The morphological features and structural properties were studied by the FESEM, XRD, respectively. FTIR was performed to study the interactions between polymer host, salt, and SN. Impedance spectroscopy, Transference number measurements, LSV and CV were used to examine the electrochemical properties. The complex permittivity/conductivity & modulus were studied to understand the dielectric properties by evaluating the dielectric strength, relaxation time, hopping frequency and dc conductivity. Based on the experimental results an interaction mechanism is presented.

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Preparation and characterization of novel solid polymer blend electrolytes based on poly (vinyl pyrrolidone) with various concentrations of lithium perchlorate

Cited by 41 publications

References 32 publications

Optimization of salt concentration and explanation of two peak percolation in blend solid polymer nanocomposite films

Optimization of salt concentration and explanation of two peak percolation in blend solid polymer nanocomposite films

Conductivity and Dielectric Studies of Lithium Trifluoromethanesulfonate Doped Polyethylene Oxide-Graphene Oxide Blend Based Electrolytes

Tailoring the Structural, Morphological, Electrochemical, and Dielectric Properties of Solid Polymer Electrolyte

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