Dielectric constant and electrical study of solid-state electrolyte lithium phosphate glasses

Hamam, Khalil J.; Salman, Fathy

doi:10.1007/s00339-019-2868-2

Cited by 30 publications

(5 citation statements)

References 47 publications

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“…It should be noted that the impedance behavior of the solidstate electrochemical systems under external polarization is rarely discussed in the literature. For instance, there are only a few studies that link the impedance spectra at different polarizations and loss functions to underlying physical quantities such as the jump-rate 30 and relaxation processes. 31 The dielectric constant, as it is determined in this work, is used in the following for the calculation of the thickness of the SCL, although this implies that the impact of the changes in the charge carrier concentration on the dielectric properties is neglected.…”

Section: ■ Materials and Experimental Sectionmentioning

confidence: 99%

Properties of the Space Charge Layers Formed in Li-Ion Conducting Glass Ceramics

Katzenmeier

Helmer

Braxmeier

et al. 2021

ACS Appl. Mater. Interfaces

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For years, the space charge layer formation in Li-conducting solid electrolytes and its relevance to so-called all solid-state batteries have been controversially discussed from experimental and theoretical perspectives. In this work, we observe the phenomenon of space charge layer formation using impedance spectroscopy at different electrode polarizations. We analyze the properties of these space charge layers using a physical equivalent circuit describing the response of the solid electrolytes and solid/solid electrified interfaces under blocking conditions. The elements corresponding to the interfacial layers are identified and analyzed with different electrode metals and applied biases. The effective thickness of the space charge layer was calculated to be ∼60 nm at a bias potential of 1 V. In addition, it was possible to estimate the relative permittivity of the electrolytes, specific resistance of the space charge layer, and the effective thickness of the electric double layer (∼0.7 nm).

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Section: ■ Materials and Experimental Sectionmentioning

confidence: 99%

Properties of the Space Charge Layers Formed in Li-Ion Conducting Glass Ceramics

Katzenmeier

Helmer

Braxmeier

et al. 2021

ACS Appl. Mater. Interfaces

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“…Figures 5(c) and (d) show the frequency dependence of the real and imaginary parts of conductivity, respectively, at different temperatures for the Na 11 Sn 2 AsS 12 . The lowfrequency region is related to the electrode polarization and the frequency-independent plateau region at mid frequencies belongs to DC conductivity followed by dispersion in the AC conductivity at high frequencies [32,46]. The dispersion of conductivity in the region of high and low frequencies could be explained by the jump relaxation model.…”

Section: Ionic Conduction Mechanismmentioning

confidence: 97%

Diffusion mechanism in a sodium superionic sulfide-based solid electrolyte: Na₁₁Sn₂AsS₁₂

Tiwari¹,

Singh²,

Srivastava³

et al. 2022

J. Phys. D: Appl. Phys.

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Recently, in all solid state batteries, the sulfide based solid electrolytes have received increasing attention due to their high ionic conductivity, good mechanical features and better chemical stability. Therefore, in the present study, we have synthesized sodium superionic conducting novel sulfide based inorganic solid electrolyte (Na11Sn2AsS12) by solid state reaction method. The prepared solid electrolyte (Na11Sn2AsS12) has been characterized by different techniques such as XRD, SEM, XPS, TGA, EIS and LSV to study its various properties such as structure, surface morphology, thermal stability, dielectric properties, ionic conductivity and electrochemical stability window for sodium ion battery applications. The XRD analysis confirms the coexisting two phases- tetragonal and cubic with the phase fraction of 0.69 and 0.31 respectively. The SEM study reveals the irregular shape and dense morphology of solid electrolyte. On the other hand, TGA analysis shows that the prepared solid electrolyte is suitable for high temperature battery application. The ionic and transport studies confirm that the synthesized Na11Sn2AsS12 is purely ionic in nature having ionic conductivity found to be 1.14×〖10〗^(-4) S/cm and negligible electronic conductivity ~ 1.43×〖10〗^(-10) S/cm at room temperature. Furthermore, the detailed ionic conduction mechanism is studied using temperature and frequency dependent ac impedance analysis. In addition, the synthesized solid electrolyte Na11Sn2AsS12 exhibits wide electrochemical window (~7.0 V) and high diffusion coefficient (1.3×〖10〗^(-7) cm2/s) showing suitable electrolyte property for solid state sodium ion battery application.

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“…Moreover, a third relaxation peak is almost hidden in the intermediate frequency region, which is clear in the Kramers-Kronig transformation of the dielectric loss tangent at 170 K, as presented in Figure 7a. The dielectric relaxations at low and high frequencies are associated with the electrode and grain contributions, respectively, while the dielectric Furthermore, it was observed that the dielectric constant rises as temperature increases, primarily ascribed to the increase in various polarization contributions, resulting from thermally activated charge carriers [62]. The presented curves of the dielectric constant show 3 plateaus (with a slight dependence on frequency) at around 400, 10 4 , and 3 × 10 5 , between which the curves decrease rapidly with increasing frequency.…”

Section: Magnetic Propertiesmentioning

confidence: 99%

Structural, Dielectric, Electrical, and Magnetic Characteristics of Bi0.8Ba0.1Er0.1Fe0.96Cr0.02Mn0.02O3 Nanoparticles

Bougoffa,

Benali,

Benali

et al. 2024

Crystals

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Bi0.8Ba0.1Er0.1Fe0.96Cr0.02Mn0.02O3 (BBEFCMO) multiferroic ceramic was synthesized through the sol-gel route. The impact of incorporating various dopants into both A and B sites of the BiFeO3 was investigated, and structural, Raman, dielectric, electric, and magnetic properties were studied. X-ray diffraction analysis and Raman spectroscopy revealed a rhombohedral structure with the R3c space group for the doped material (BBEFCMO). Dielectric properties were examined across a frequency range of 102–106 Hz. The present multiferroic material exhibits a colossal dielectric constant and minimal dielectric loss tangent, making it suitable for applications in energy storage. Furthermore, the Cole-Cole type of relaxation was deduced from the imaginary part of the modulus for both grain and boundary-grain contributions. Overall, this study indicates that substituting ions in both A and B sites of BiFeO3 significantly enhances its multiferroic properties, as evidenced by dielectric and magnetic measurements.

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Dielectric constant and electrical study of solid-state electrolyte lithium phosphate glasses

Cited by 30 publications

References 47 publications

Properties of the Space Charge Layers Formed in Li-Ion Conducting Glass Ceramics

Properties of the Space Charge Layers Formed in Li-Ion Conducting Glass Ceramics

Diffusion mechanism in a sodium superionic sulfide-based solid electrolyte: Na₁₁Sn₂AsS₁₂

Structural, Dielectric, Electrical, and Magnetic Characteristics of Bi0.8Ba0.1Er0.1Fe0.96Cr0.02Mn0.02O3 Nanoparticles

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Dielectric constant and electrical study of solid-state electrolyte lithium phosphate glasses

Cited by 30 publications

References 47 publications

Properties of the Space Charge Layers Formed in Li-Ion Conducting Glass Ceramics

Properties of the Space Charge Layers Formed in Li-Ion Conducting Glass Ceramics

Diffusion mechanism in a sodium superionic sulfide-based solid electrolyte: Na11Sn2AsS12

Structural, Dielectric, Electrical, and Magnetic Characteristics of Bi0.8Ba0.1Er0.1Fe0.96Cr0.02Mn0.02O3 Nanoparticles

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Diffusion mechanism in a sodium superionic sulfide-based solid electrolyte: Na₁₁Sn₂AsS₁₂