Influence of incorporation of Fe2O3 content on the structural and the dielectric relaxation properties of lithium boro-vanadate oxide glass: toward ideal cathode glasses

Gomaa, Hosam M.; Moneep, A.M.; Abdel-Moety, A. S.; Bendary, A. A.; Yahia, I.S.; Zyoud, Samer H.

doi:10.1007/s00339-022-06350-x

Cited by 3 publications

(5 citation statements)

References 39 publications

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“…This suggests that the hindrance developed for dipole orientations are increasing with increase of temperature. The present relaxation activation energy and dc activation energy are slightly higher than those reported for Fe2O3 doped lithum borovanadate glasses [16] and Li2O doped barium vanadate glasses [23]. The range of activation energy for DC conduction, the electric modulus and impedence have been found to be almost same.…”

Section: Relaxation Mechanismcontrasting

confidence: 60%

“…There is no change in the peak intensity as its hopping frequency significantly increases. This shows that the mobility of charge carriers has clear effect on temperature [16]. In addition, it can be noted that the modulus graphs have almost the same shapes (at all temperatures), indicating that the distribution of the relaxation time is unaffected by temperature [18].…”

Section: Electric Modulus (M)mentioning

confidence: 62%

“…There have been electrical and dielectric investigations conducted on vanadate doped glasses, V2O5-ZnO [1-2, 14], B2O3-V2O5 [15][16][17][18] and B2O3-V2O5-ZnO [19]. They observed that high concentration of the transition metal cations produces electronic conduction and the ionic contribution is blocked, exhibited single relaxation process.…”

Section: Introductionmentioning

confidence: 99%

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Dielectric relaxation studies in Sm₂O₃ doped boro-zinc-vanadate glasses

Ashwini,

Sankarappa,

Amarkumar

et al. 2024

IOP Conf. Ser.: Mater. Sci. Eng.

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In this work, the conventional melting procedure was adopted to synthesize glasses with a composition of (ZnO)0.3 – (V2O5)0.3 – (B2O3)0.4-x – (Sm2O3)x, x = 0.002, 0.005, 0.007, 0.01 and 0.02 mol%. The dielectric properties of these glasses were measured. The dielectric constant (εʹ) and dielectric loss (εʹʹ) of glasses are found to vary in the range from 1.9177x102 to 3.9456x103 and from 1.5751 to 6.9095x105 respectively for the temperature range 343 K – 573 K and frequency range 50 Hz to 10 MHz. With increase of frequency, both dielectric constant and loss decreased and increased with increase of temperature. The analysis of dielectric constant and dielectric loss confirmed that the phenomenon of dielectric relaxation is mainly due to the frequency-dependent polarization mechanism. Electric modulus and impedence spectroscopy revealed non-Debye type and a single phase relaxation process. Activation energy for dc conductivity and dielectric relaxation are found to be of same size indicating that the potential barrier encountered by the charge carriers is same in both the processes. The master curves suggested that temperature-independent relaxation is occurring in the present glasses. The high values of measured dielectric parameters suggest that the present glasses are suitable in semiconducting and energy storage applications.

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Section: Relaxation Mechanismcontrasting

confidence: 60%

Section: Electric Modulus (M)mentioning

confidence: 62%

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Dielectric relaxation studies in Sm₂O₃ doped boro-zinc-vanadate glasses

Ashwini,

Sankarappa,

Amarkumar

et al. 2024

IOP Conf. Ser.: Mater. Sci. Eng.

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“…Moreover, the dependence of s(T) on temperature suggests that the conduction mechanism aligns with the correlated barrier hopping (CBH) approach, a phenomenon previously observed in various other substances. [38][39][40] In the following section, we will engage in a more comprehensive exploration of the conduction mechanism and its interplay with dc conductivity. As depicted in Fig.…”

Section: Resultsmentioning

confidence: 99%

Structural, morphological, electrical, and dielectric properties of Na₂Cu₅(Si₂O₇)₂ for ASSIBs

Ben Bechir,

Akermi

2024

RSC Adv.

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“…The slower backward motion is due to the smaller Coulombic interaction between the mobile ions. Moreover, the observed temperature-dependent behavior of s ( T ) reveals that the conduction mechanism is of the correlated barrier hoping (CBH) type, as reported for many other compounds. − We will further discuss the nature of the conduction mechanism and its correlation with dc conductivity in a later section.…”

Section: Resultsmentioning

confidence: 99%

Li-Ion Conduction Mechanism and Relaxation Dynamics in Sorosilicate Compound Li₂Cu₅(Si₂O₇)₂

Chikara,

Bera,

Kumar

et al. 2023

ACS Appl. Electron. Mater.

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Inorganic solid electrolytes are the building blocks for all-solid-state lithium-ion batteries and have substantial advantages in safety and electrochemical as well as mechanical stability compared to organic liquid electrolytes. We report here the Li-ion conduction mechanism and relaxation dynamics in a potential solid electrolyte material, viz. sorosilicate compound Li 2 Cu 5 (Si 2 O 7 ) 2 , by impedance spectroscopy. The dc conductivity follows the Arrhenius behavior with an activation energy of 1.25(4) eV, and it reveals thermally activated lithium-ion conduction. We have shown the importance of a careful selection of an equivalent circuit model to determine the dc conductivity parameters from the impedance data involving contributions from the grain and grain boundaries. The frequency-and temperaturedependent ac conductivity and dielectric constant measurements reveal that the ionic conduction in the present compound occurs through the correlated barrier hopping (CBH) of charge carriers. The ionic conduction pathways within the unit cell have been mapped by the soft bond valence sum (BVS) analysis of the measured neutron diffraction pattern. The analysis indicates the presence of bottlenecks in the lithium-ion conduction pathways along the a axis and along the diagonal direction of the bc plane of the triclinic unit cell which are responsible for the observed high value of activation energy and, hence, the low value of ionic conductivity. Electric modulus studies have confirmed that the ionic conduction relaxation process is thermally activated and it has a spread of relaxation time. Therefore, the present study involving the dc conductivity, ac conductivity, electric modulus, and dielectric constant analyses sheds light on the microscopic mechanism of ionic conduction in Li 2 Cu 5 (Si 2 O 7 ) 2 . The acquired knowledge on the ionic conduction mechanism will be useful for designing efficient ionic conductors for battery applications.

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Influence of incorporation of Fe2O3 content on the structural and the dielectric relaxation properties of lithium boro-vanadate oxide glass: toward ideal cathode glasses

Cited by 3 publications

References 39 publications

Dielectric relaxation studies in Sm₂O₃ doped boro-zinc-vanadate glasses

Dielectric relaxation studies in Sm₂O₃ doped boro-zinc-vanadate glasses

Structural, morphological, electrical, and dielectric properties of Na₂Cu₅(Si₂O₇)₂ for ASSIBs

Li-Ion Conduction Mechanism and Relaxation Dynamics in Sorosilicate Compound Li₂Cu₅(Si₂O₇)₂

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Influence of incorporation of Fe2O3 content on the structural and the dielectric relaxation properties of lithium boro-vanadate oxide glass: toward ideal cathode glasses

Cited by 3 publications

References 39 publications

Dielectric relaxation studies in Sm2O3 doped boro-zinc-vanadate glasses

Dielectric relaxation studies in Sm2O3 doped boro-zinc-vanadate glasses

Structural, morphological, electrical, and dielectric properties of Na2Cu5(Si2O7)2 for ASSIBs

Li-Ion Conduction Mechanism and Relaxation Dynamics in Sorosilicate Compound Li2Cu5(Si2O7)2

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Product

Resources

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Dielectric relaxation studies in Sm₂O₃ doped boro-zinc-vanadate glasses

Dielectric relaxation studies in Sm₂O₃ doped boro-zinc-vanadate glasses

Structural, morphological, electrical, and dielectric properties of Na₂Cu₅(Si₂O₇)₂ for ASSIBs

Li-Ion Conduction Mechanism and Relaxation Dynamics in Sorosilicate Compound Li₂Cu₅(Si₂O₇)₂