Influence of Cobalt (II) Chloride Catalysed on the Thermal and Optical Characterization of PEO Based Solid Polymer Electrolytes

Chapi, Sharanappa; Devendrappa, H.

doi:10.6000/1929-5995.2014.03.04.2

Cited by 12 publications

(4 citation statements)

References 37 publications

(33 reference statements)

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“…These results emphasize that the decrease in the crystalline phase is due to the lowering of the compact nature of the polymer body [ 36 , 37 ]. It was found that the PEO building units such as C–H bond, C–C bond, and C–O bond provide a good crystalline and electrochemical stability nature [ 36 , 38 ]. The PEO is found to exhibit as a linear and semi-crystalline polymer with distinguishable diffraction peaks [ 38 , 39 ].…”

Section: Resultsmentioning

confidence: 90%

“…The optical absorption coefficient ( α ) as opposed to wavelength (λ) is described as the power portion, which is absorbed per unit length of a medium. The α is assessed from the absorption data investigation using the giving equation [ 6 , 36 , 49 ]

where d and A are the thickness of the samples and the absorbance, respectively; then α can also be defined as a measure of the ability of materials to absorb light photons [ 50 ]. Optical absorption examination offers insight into the solid’s band structure.…”

Section: Resultsmentioning

confidence: 99%

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Optical Dielectric Loss as a Novel Approach to Specify the Types of Electron Transition: XRD and UV-vis as a Non-Destructive Techniques for Structural and Optical Characterization of PEO Based Nanocomposites

et al. 2020

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The structure and optical properties of polyethylene oxide (PEO) doped with tin titanate (SnTiO3) nano-filler were studied by X-ray diffraction (XRD) and UV-Vis spectroscopy as non-destructive techniques. PEO-based composed polymer electrolytes inserted with SnTiO3 nano-particles (NPs) were synthesized through the solution cast technique. The change from crystalline phase to amorphous phase of the host polymer was established by the lowering of the intensity and broadening of the crystalline peaks. The optical constants of PEO/SnTiO3 nano-composite (NC), such as, refractive index (n), optical absorption coefficient (α), dielectric loss (εi), as well as dielectric constant (εr) were determined for pure PEO and PEO/SnTiO3 NC. From these findings, the value of n of PEO altered from 2.13 to 2.47 upon the addition of 4 wt.% SnTiO3NPs. The value of εr also increased from 4.5 to 6.3, with addition of 4 wt.% SnTiO3. The fundamental optical absorption edge of the PEO shifted toward lower photon energy upon the addition of the SnTiO3 NPs, confirming a decrement in the optical band gap energy of PEO. The band gap shifted from 4.78 eV to 4.612 eV for PEO-doped with 4 wt.% SnTiO3. The nature of electronic transitions in the pure and the composite material were studied on the basis of Tauc’s model, while optical εi examination was also carried out to calculate the optical band gap.

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Section: Resultsmentioning

confidence: 90%

Section: Resultsmentioning

confidence: 99%

Optical Dielectric Loss as a Novel Approach to Specify the Types of Electron Transition: XRD and UV-vis as a Non-Destructive Techniques for Structural and Optical Characterization of PEO Based Nanocomposites

et al. 2020

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“…By separating intensities resulting from crystalline and amorphous phases, the crystallinity is computed. The percentage of crystalline is estimated using the ratio of crystalline area to total area, which has the following relationship, 23

χ_{normalc} % = \{\frac{A_{normalC}}{A_{a} + A_{C}}\} \times 100,

where, A c = Area of crystalline phase, A a = Area of amorphous phase.…”

Section: Resultsmentioning

confidence: 99%

Enhanced structural, electrical, and electrochemical performance of polyethylene oxides (PEO)‐based polymer electrolytes for solid state K⁺ ion batteries

Chapi,

Murugendrappa,

Rayar

et al. 2024

J of Applied Polymer Sci

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Flexible polymer electrolytes with effective electrochemical characteristics must be developed to meet smart electronic technology demands. The current investigation explores the solid polymer electrolytes (SPEs) prepared by solution‐casting technique, using polyethylene oxides (PEO) doped with KCl salt in different weight percentages. The effect of the dopant on the chemical interactions and structural, optical, thermal, electrical, and electrochemical properties were studied using various strategies. It was found that the incorporation of KCl salt to PEO results in a three order of magnitude enhancement in ionic conductivity of polymer matrix from 10−9 to 10−6 S cm−1. The PEO doped with 20 wt.% KCl salt exhibited the highest ionic conductivity (4.32 × 10−6 S cm−1) and low activation energy (0.25 eV). According to the thermal analysis, the thermal stability of the films improved as the dopant concentration increased. Further, the electrochemical strength improved with increasing dopant concentration, according to cyclic voltammogram experiments. From the results of all the characterizations, PEO loaded with 20 wt.% KCl SPE system is a suitable candidate for use as an electrolyte in energy storage devices such as solid‐state batteries.

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“…The consequence of dopant addition was the decrease in the crystalline phase, i.e., lowering the compact nature of the polymer structure [28,29]. It was documented that the chemical stability of the PEO polymer crystalline structure is related to the building block units, such as C-H, C-O, and C-C bonds [28,30].…”

Section: Xrd Analysismentioning

confidence: 99%

Characteristics of PEO Incorporated with CaTiO3 Nanoparticles: Structural and Optical Properties

et al. 2021

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In this research, direct band gap polymer composites with amorphous phase, which are imperative for optoelectronic devices applications were synthesized. The solution cast technique was used to produce polyethylene oxide (PEO)/calcium titanate (CaTiO3) nanocomposite (NC) films. The X-ray diffraction (XRD) confirms the growth of amorphous nature within PEO with CaTiO3 addition. The optical band gaps of pure PEO and PEO/CaTiO3 NC films were calculated using analysis of ultraviolet–visible (UV-Vis) spectra. The change in absorption edge toward lower photon energy is evidence of polymer modification. The dispersion behavior of the refractive index of PEO was manipulated to a higher wavelength upon doping with CaTiO3. Upon adding CaTiO3 to the pure PEO polymer, the dielectric constant and refractive index were considerably modified. The band gap shifts from 4.90 eV to 4.19 eV for the PEO incorporated with an optimum portion of 8 wt. % of CaTiO3. The types of the electronic transition in composite samples were specified, based on the Taucs model and the optical dielectric loss. The alteration of UV/Vis absorption spectra of the NC film was considered a suitable candidate to be applied in nanotechnology-based devices. The spherulites ascribed to the crystalline phase were distinguished through the optical microscopy (OM) study.

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Influence of Cobalt (II) Chloride Catalysed on the Thermal and Optical Characterization of PEO Based Solid Polymer Electrolytes

Cited by 12 publications

References 37 publications

Optical Dielectric Loss as a Novel Approach to Specify the Types of Electron Transition: XRD and UV-vis as a Non-Destructive Techniques for Structural and Optical Characterization of PEO Based Nanocomposites

Optical Dielectric Loss as a Novel Approach to Specify the Types of Electron Transition: XRD and UV-vis as a Non-Destructive Techniques for Structural and Optical Characterization of PEO Based Nanocomposites

Enhanced structural, electrical, and electrochemical performance of polyethylene oxides (PEO)‐based polymer electrolytes for solid state K⁺ ion batteries

Characteristics of PEO Incorporated with CaTiO3 Nanoparticles: Structural and Optical Properties

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Influence of Cobalt (II) Chloride Catalysed on the Thermal and Optical Characterization of PEO Based Solid Polymer Electrolytes

Cited by 12 publications

References 37 publications

Optical Dielectric Loss as a Novel Approach to Specify the Types of Electron Transition: XRD and UV-vis as a Non-Destructive Techniques for Structural and Optical Characterization of PEO Based Nanocomposites

Optical Dielectric Loss as a Novel Approach to Specify the Types of Electron Transition: XRD and UV-vis as a Non-Destructive Techniques for Structural and Optical Characterization of PEO Based Nanocomposites

Enhanced structural, electrical, and electrochemical performance of polyethylene oxides (PEO)‐based polymer electrolytes for solid state K+ ion batteries

Characteristics of PEO Incorporated with CaTiO3 Nanoparticles: Structural and Optical Properties

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Enhanced structural, electrical, and electrochemical performance of polyethylene oxides (PEO)‐based polymer electrolytes for solid state K⁺ ion batteries