Optical and Conductivity Studies of Cr<sup>3+</sup> Doped Polyvinyl Pyrrolidone Polymer Electrolytes

Sreekanth, K.; Siddaiah, T.; Gopal, N.O.; Jyothi, N. Krishna; Kumar, K. Vinod; Ramu, Ch.

doi:10.1080/00222348.2019.1658372

Cited by 13 publications

(5 citation statements)

References 31 publications

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“…The conductivity 15 mol% GdCl3 doped PVP polymer electrolyte film exhibits the maximum ionic conductivity and is more orders of magnitude greater than that of different polymers and polymer blends doped with different metal salts [4-7, 11, 12, 14, 21-25]. The estimated dc value for higher concentration of GdCl3 doped film is about five orders of magnitude larger than the value obtained for PVP films doped with Mg 2+ ion and VO 2+ ion reported by Sreekanth et al They have obtained the dc value of 3.21 × 10 -8 S/cm and 5.39 × 10 -8 S/cm at room temperature [14,26]. The enhancement in dc with increasing in GdCl3 salt might be attributed to dissolution of GdCl3 salt in PVP with strong amorphous nature and boost the number of mobile charge carriers.…”

Section: Ac Conductivity Analysismentioning

confidence: 95%

Effect of Anhydrous Gdcl3 Doping on the Structural, Optical and Electrical Properties of PVP Polymer Electrolyte Films

Arasakumari

Subramanian

2021

Preprint

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Polymer electrolyte films containing GdCl3 salt and polyvinyl pyrrolidone polymer have been prepared by solution cast technique. X-ray diffraction patterns confirm the amorphous nature of all the films. UV-Visible optical absorption properties reveal the complex formation of polymer electrolyte with GdCl3 dopant. The absorption coefficient, direct band gap energy and indirect band gap energy are decreased with increasing GdCl3 dopant. Both dielectric and ac conductivity studies exhibit that the dielectric constant value at low frequency and ac conductivity at high frequency increases with increasing GdCl3 dopant concentration in PVP polymer. The complex impedance plots showed a single semi-circular arc for all the concentrations of CdCl3 doped in PVP. The ac conductivity and ionic conductivity are about 3.96´10-3 S/cm and 3.12´10-3 S/cm at room temperature for 15 mol% GdCl3 doped PVP polymer electrolyte films. The cyclic-voltammetry plots revealed large specific capacities with increasing in GdCl3 dopant concentration. The estimated ionic conductivity is five orders of magnitude larger than that of PVP doped with other metal salts reported earlier. The present study strongly recommends that the CdCl3 is worthy candidate for enhancing ionic conductivity of PVP and other polymers.

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Section: Ac Conductivity Analysismentioning

confidence: 95%

Effect of Anhydrous Gdcl3 Doping on the Structural, Optical and Electrical Properties of PVP Polymer Electrolyte Films

Arasakumari

Subramanian

2021

Preprint

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“…At room temperature, the conductivity value of RSNF ranged from 8.08 × 10 −5 at low frequency to 5.99 × 10 −4 at high frequency, lowest concentration at 2.5 wt.% ranged from 1.15 × 10 −5 to 2.15 × 10 −4 , 5 wt.% from 1.08 × 10 −5 to 3.6 × 10 −4 , 7.5 wt.% the value increased from 6.34 × 10 −6 to 1.22 × 10 −4 , and for 10 wt.% the value increased from 3.58 × 10 −5 to 5.35 × 10 −4 , which indicates the semiconductor properties for all concentration. The increase of conductivity to 1.22 × 10 −4 with 7.5 wt.% ZnONPs introduced in RSNF is due to the ions migration between coordinating sites 41 and improvement of ionic conductivity with the addition of ZnONPs; then decreases with the increase ZnONPs to 10 wt.%.…”

Section: Electrical Propertiesmentioning

confidence: 97%

Novel green flexible rice straw nanofibers/zinc oxide nanoparticles films with electrical properties

El-Wahab

Fadel

Abdel-karim

et al. 2023

Sci Rep

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In the current work, rice straw nanofibers (RSNF) with the width of elementary fibrils (~ 4–5 nm) were isolated from rice straw. The isolated nanofibers were used with zinc oxide nanoparticles (ZnONPs) to prepare flexible nanopaper films. Tensile strength and electrical properties of the prepared RSNF/ZnONPs nanopaper were investigated. The addition of ZnONPs to RSNF nanopaper did not deteriorate its mechanical properties and showed a slight improvement in tensile strength and Young's modulus of about 14% and 10%, respectively, upon the addition of 5% of ZnONPs. Microscopy investigation using scanning electron microscopy (SEM) showed the inclusion of the ZnONPs within the RSNF. Electrical conductivity and dielectric properties as a function of frequency at different temperatures were studied. The ac‐electrical conductivity increased with frequency and fitted with the power law equation. The dc‐ electrical conductivity of the samples verified the Arrhenius equation and the activation energies varied in the range from 0.9 to 0.42 eV. The dielectric constant decreased with increasing frequency and increased with increasing temperature, probably due to the free movement of dipole molecular chains within the RSNF nanopaper. The high values of the dielectric constant and conductivity of the prepared nanopaper films support their use in electronic components.

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“…The relatively lower band gap of ISPEs than PEO-KFSI was favorable for enhanced transportation of K + cations through the modified PEO chains. [41,42] It is also suggests that the electron-withdrawing nature of Bi-I groups in the ISPE may affect the electron distribution due to charge transfer complexes, favorably regulating the electron cloud at the interface. [43] Meanwhile, Raman spectroscopy was also used to characterize the ISPE (Figure S7, Supporting Information).…”

Section: Design Logic and Properties Of Ispementioning

confidence: 99%

Building Stable Solid‐State Potassium Metal Batteries

Lyu,

Yu,

et al. 2024

Advanced Materials

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Solid‐state potassium metal batteries (SPMBs) are promising candidates for the next generation of energy storage systems for their low cost, safety, and high energy density. However, full SPMBs have not yet been reported due to the K dendrites, interfacial incompatibility, and limited availability of suitable solid‐state electrolytes. Here, we present stable SPMBs using a new iodinated solid polymer electrolyte (ISPE). The functional ions reconstruct ion transport channels, providing efficient potassium ion transport. ISPE shows a combination of high ionic conductivity, superior interfacial compatibility, and electrochemical stability. In‐situ alloying and iodinated interlayer increase K metal compatibility for prolonged cycling with low polarization. Moreover, the ISPE enables SPMBs with Prussian blue cathode stable operation at a high voltage of 4.5 V, a superior rate capability, and long‐term cycling over 3,000 cycles (4.2 V versus K+/K) with an ultra‐high coulombic efficiency of 99.94%. More importantly, a classic solid‐state potassium metal pouch cell achieved 4.2 V stable cycling over 800 cycles with an high retention of 93.6%, presenting a new development strategy for secure and high‐performance rechargeable solid‐state potassium metal batteries.This article is protected by copyright. All rights reserved

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Optical and Conductivity Studies of Cr³⁺ Doped Polyvinyl Pyrrolidone Polymer Electrolytes

Cited by 13 publications

References 31 publications

Effect of Anhydrous Gdcl3 Doping on the Structural, Optical and Electrical Properties of PVP Polymer Electrolyte Films

Effect of Anhydrous Gdcl3 Doping on the Structural, Optical and Electrical Properties of PVP Polymer Electrolyte Films

Novel green flexible rice straw nanofibers/zinc oxide nanoparticles films with electrical properties

Building Stable Solid‐State Potassium Metal Batteries

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Optical and Conductivity Studies of Cr3+ Doped Polyvinyl Pyrrolidone Polymer Electrolytes

Cited by 13 publications

References 31 publications

Effect of Anhydrous Gdcl3 Doping on the Structural, Optical and Electrical Properties of PVP Polymer Electrolyte Films

Effect of Anhydrous Gdcl3 Doping on the Structural, Optical and Electrical Properties of PVP Polymer Electrolyte Films

Novel green flexible rice straw nanofibers/zinc oxide nanoparticles films with electrical properties

Building Stable Solid‐State Potassium Metal Batteries

Contact Info

Product

Resources

About

Optical and Conductivity Studies of Cr³⁺ Doped Polyvinyl Pyrrolidone Polymer Electrolytes