Optical properties and ionic conductivity studies of an 8 MeV electron beam irradiated poly(vinylidene fluoride-<i>co</i>-hexafluoropropylene)/LiClO<sub>4</sub>electrolyte film for opto-electronic applications

Yesappa, L.; Niranjana, M.; Ashokkumar, S. P.; Vijeth, H.; Basappa, M.; Dwivedi, Jishnu; Petwal, Vikash Chandra; Sanjeev, Ganesh; Devendrappa, H.

doi:10.1039/c8ra00970h

Cited by 53 publications

(4 citation statements)

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“…The NMR spectra reveals that the shift in the signal peak at 43.27 ppm in the unirradiated PHL polymer electrolyte to 43.51 ppm after 120 kGy EB dose is attributed to the presence of carbon atoms and fluorinated carbon atoms in the peak range 118–122 ppm, and the spectral lines between 118 and 121 ppm are assigned to the CF 2 group of the host polymer. The NMR study confirms that relative change in chemical bonds and radiation-induced changes in polymeric materials due to irradiation results in degradation of the polymer electrolyte upon irradiation, 48 and the results are in good agreement with FT-IR analysis.…”

Section: Resultssupporting

confidence: 75%

“…It reveals the increased redox reaction process with increased scan rate, the oxidation and reduction peak currents increase significantly. 48−50 The results reveal that the polymer electrolytes are electrochemically active after EB irradiation and are active materials for potential storage and lithium-ion battery applications.…”

Section: Resultsmentioning

confidence: 96%

“…The observed results confirm that the EB irradiation can modify the chemical bonds through oxidative chain scission process and increase the amorphousity in the polymer electrolyte; this was clearly reported in our previous publication. 25 It can be illustrated that the decrease in peak intensity (transmittance increases) with increase in the dose to 120 kGy results from the cross-linking and the decrease in transmittance with increase in the irradiation dose is attributed to the predomination of chain scission over cross-linking with increasing EB dose. 26 The observed results confirm the alteration in structural properties after EB irradiation.…”

Section: Resultsmentioning

confidence: 98%

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Modified Thermal, Dielectric, and Electrical Conductivity of PVDF-HFP/LiClO₄Polymer Electrolyte Films by 8 MeV Electron Beam Irradiation

et al. 2018

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The polymer electrolyte films (poly((vinylidene fluoride)- co -hexafluoropropylene)/LiClO 4 @90:10 w/w, PHL10) were prepared by solution-casting technique and the effect of various dosages of electron beam (EB) irradiation on structure, morphology, thermal, dielectric, and conductivity properties at various dosages. The atomic force microscope topography image shows substantial change in surface morphology due to irradiation and the modification of chemical bonds through chain scission process with increased EB dose was confirmed by Fourier transform infrared spectroscopy studies. NMR studies confirm the change in structural properties due to irradiation. The X-ray diffractometer confirms the decreased crystallinity from 50.10 for unirradiated film to 40.96 at 120 kGy doses; hence, increase in amorphousity due to a decrease in melting temperature from 460 to 418 °C leads to the degradation of the polymer, and the differential scanning calorimetry study reveals the decreased crystallinity with increased irradiation dose. The dielectric and modulus parameters are observed to decrease with increasing frequency as well as temperature. The conductivity increases with frequency and EB dose due to the increased segmental motion of charged ions by chain scission/cross-linking process. The high conductivity of 1.81 × 10 –3 S/cm with the corresponding relaxation time of 1.697 × 10 –6 at 120 kGy dose was observed. The conduction mechanism reveals an Ohmic behavior and the I – V plot exhibits a gradual increase in current with applied voltage as well as irradiation dose. The electrochemical performance of the irradiated polymer electrolyte was improved significantly and hence the polymer electrolytes can be used in solid-state batteries and storage applications after altering the properties by the influence of irradiation.

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Section: Resultssupporting

confidence: 75%

Section: Resultsmentioning

confidence: 96%

Section: Resultsmentioning

confidence: 98%

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Modified Thermal, Dielectric, and Electrical Conductivity of PVDF-HFP/LiClO₄Polymer Electrolyte Films by 8 MeV Electron Beam Irradiation

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“…As manifested by Fig. 2a, the Schiff base compounds are semiconductors with relatively small bandgaps (HNAN: 2.15 eV, HNAN-NO 2 : 2.02 eV) [39]. .…”

Section: Science China Materialsmentioning

confidence: 99%

All-organic composites with strong photoelectric response over a wide spectral range

Liu

Wang

et al. 2020

Sci. China Mater.

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Facile Li⁺ Transport in Interpenetrating O‐ and F‐Containing Polymer Networks for Solid‐State Lithium Batteries

Nguyen

Zhang

et al. 2023

Adv Funct Materials

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Solid polymer electrolytes (SPEs) provide an intimate contact with electrodes and accommodate volume changes in the Li‐anode, making them ideal for all‐solid‐state batteries (ASSBs); however, confined chain swing, poor ion‐complex dissociation, and barricaded Li+‐transport pathways limit the ionic conductivity of SPEs. This study develops an interpenetrating polymer network electrolyte (IPNE) comprising poly(ethylene oxide)‐ and poly(vinylidene fluoride)‐based networked SPEs (O‐NSPE and F‐NSPE, respectively) and lithium bis(fluorosulfonyl) imide (LiFSI) to address these challenges. The CF2/CF3 segments of the F‐NSPE segregate FSI− to form connected Li+‐diffusion domains, and COC segments of the O‐NSPE dissociate the complexed ions to expedite Li+ transport. The synergy between O‐NSPE and F‐NSPE gives IPNE high ionic conductivity (≈1 mS cm−1) and a high Li‐transference number (≈0.7) at 30 °C. FSI− aggregation prevents the formation of a space‐charge zone on the Li‐anode surface to enable uniform Li deposition. In Li||Li cells, the proposed IPNE exhibits an exchange current density exceeding that of liquid electrolytes (LEs). A Li|IPNE|LiFePO4 ASSB achieves charge–discharge performance superior to that of LE‐based batteries and delivers a high rate of 7 mA cm−2. Exploiting the synergy between polymer networks to construct speedy Li+‐transport pathways is a promising approach to the further development of SPEs.

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Optical properties and ionic conductivity studies of an 8 MeV electron beam irradiated poly(vinylidene fluoride-co-hexafluoropropylene)/LiClO₄electrolyte film for opto-electronic applications

Abstract: A study into the effect of 8 MeV energy electron beam irradiation on the optical properties and ionic conductivity of a PVDF–HFP/LiClO4 electrolyte film.

Cited by 53 publications

References 51 publications

Modified Thermal, Dielectric, and Electrical Conductivity of PVDF-HFP/LiClO₄Polymer Electrolyte Films by 8 MeV Electron Beam Irradiation

Modified Thermal, Dielectric, and Electrical Conductivity of PVDF-HFP/LiClO₄Polymer Electrolyte Films by 8 MeV Electron Beam Irradiation

All-organic composites with strong photoelectric response over a wide spectral range

Facile Li⁺ Transport in Interpenetrating O‐ and F‐Containing Polymer Networks for Solid‐State Lithium Batteries

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Optical properties and ionic conductivity studies of an 8 MeV electron beam irradiated poly(vinylidene fluoride-co-hexafluoropropylene)/LiClO4electrolyte film for opto-electronic applications

Abstract: A study into the effect of 8 MeV energy electron beam irradiation on the optical properties and ionic conductivity of a PVDF–HFP/LiClO4 electrolyte film.

Cited by 53 publications

References 51 publications

Modified Thermal, Dielectric, and Electrical Conductivity of PVDF-HFP/LiClO4Polymer Electrolyte Films by 8 MeV Electron Beam Irradiation

Modified Thermal, Dielectric, and Electrical Conductivity of PVDF-HFP/LiClO4Polymer Electrolyte Films by 8 MeV Electron Beam Irradiation

All-organic composites with strong photoelectric response over a wide spectral range

Facile Li+ Transport in Interpenetrating O‐ and F‐Containing Polymer Networks for Solid‐State Lithium Batteries

Contact Info

Product

Resources

About

Optical properties and ionic conductivity studies of an 8 MeV electron beam irradiated poly(vinylidene fluoride-co-hexafluoropropylene)/LiClO₄electrolyte film for opto-electronic applications

Modified Thermal, Dielectric, and Electrical Conductivity of PVDF-HFP/LiClO₄Polymer Electrolyte Films by 8 MeV Electron Beam Irradiation

Modified Thermal, Dielectric, and Electrical Conductivity of PVDF-HFP/LiClO₄Polymer Electrolyte Films by 8 MeV Electron Beam Irradiation

Facile Li⁺ Transport in Interpenetrating O‐ and F‐Containing Polymer Networks for Solid‐State Lithium Batteries