Study of nanostructure and ionic conductivity of Li1.3Nb0.3V1.7(PO4)3 glass ceramics used as cathode material for solid batteries

Hassaan, M. Y.; Salem, Shaaban M.

doi:10.1016/j.jnoncrysol.2014.03.001

Cited by 26 publications

(9 citation statements)

References 43 publications

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“…the ions closely packed than in glass. [4] X-ray Diffraction (XRD) XRD of the glass samples and its HT samples was measured using CuKα radiation at room temperature to examine their amorphous and/or crystalline nature. Fig.…”

Section: Densitymentioning

confidence: 99%

“…[17] The band appearing at 1596 cm -1 will be due to the deformation vibration mode of the H2O. [4,18] The band observed at around 3425 cm -1 is ascribed to the stretching vibration of OH group. [4,18] Mössbauer Spectroscopy Figure 5 shows Mössbauer spectra measured at room temperature.…”

Section: Fourier-transform Infrared Spectroscopymentioning

confidence: 99%

“…[4,18] The band observed at around 3425 cm -1 is ascribed to the stretching vibration of OH group. [4,18] Mössbauer Spectroscopy Figure 5 shows Mössbauer spectra measured at room temperature. In the case of S-free samples, Mössbauer spectra exhibited one doublet of Fe 3+ tetrahedral (Td) in both the as-quenched and HT samples.…”

Section: Fourier-transform Infrared Spectroscopymentioning

confidence: 99%

“…If the heat treatment time is short (e.g., less than 1 h), the size of crystalline particles is expected to be of nanometer size, and provides interesting physical properties. [3][4] Transition metal (TM) ions introduced in the glass matrix improve the physicochemical properties of glass and glass-ceramics. These ions improve the electrical conduction due to electron hopping from the lower valence state to the higher state (e.g.…”

Section: Introductionmentioning

confidence: 99%

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Role of Sulfur as a Reducing Agent for the Transition Metals Incorporated into Lithium Silicate Glass

Hassaan¹,

El‐Desoky²,

Moustafa³

et al. 2015

Croat. Chem. Acta

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Li2O·0.25Fe2O3·0.25NiO·1.5SiO2 glass was prepared with and without 5 wt % sulfur (S) while melting the mixture of the starting materials at 1350 C for 1 h in air. A part of the as-prepared glass was heat treated for 1 h near its crystallization temperature (Tc) as determined from differential thermal analysis. Each glass was also investigated by means of Mössbauer spectroscopy, X-ray diffraction, FTIR, and DC conductivity. The Mössbauer spectra showed ionic Fe 2+ and Fe 3+ species in the glass as well as in the precipitated phase obtained after heat treatment. XRD patterns demonstrated the glassy phase formation in the as-quenched samples irrespective of the presence of sulfur. The heat treated samples showed different precipitated phases containing iron particles of nanometer size. The electric conductivity measurements showed that sulfur-doped samples had high values of () probably because of small polaron hopping between Fe 2+ and Fe 3+ .

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Section: Densitymentioning

confidence: 99%

Section: Fourier-transform Infrared Spectroscopymentioning

confidence: 99%

Section: Fourier-transform Infrared Spectroscopymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Role of Sulfur as a Reducing Agent for the Transition Metals Incorporated into Lithium Silicate Glass

Hassaan¹,

El‐Desoky²,

Moustafa³

et al. 2015

Croat. Chem. Acta

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“…e The band that appeared at 1430 cm -1 is assigned to some deformed vibration of H-O-H groups diffused throw the structure of glass or surface adsorbed water [25]. f The band at 1600 cm -1 is due also to the deformed vibration modes of H 2 O groups [26,27]. g Besides, the bands appeared around the region 3430 cm -1 is due to the stretching vibration modes of some O-H and H-O-H groups as well as the vibration of some hydrogen bonds [14,27].…”

Section: Fourier-transform Infrared Spectroscopymentioning

confidence: 99%

Effect of Sulfur on the Structure and Physical Properties of Vanadium-Iron-Lithium-Silicate Glass and Glass-Ceramics Nano Composite

Hassaan¹

2016

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Glass sample with the composition 1 Li 2 O • 0.25 Fe 2 O 3 • 0.25 V 2 O 5 • 1.5 SiO 2 has been studied for the usage as a cathode material in solid batteries. Another sample with the previous composition in addition to 5wt. % sulfur as reduced agent to yelled multi-valance Fe and V ions was also studied. Both sulfur-free and sulfur-doped glass samples were subjected to heat treatment for one hour at 550°C to obtain two glass-ceramic samples. Structural studies were made using X-ray diffraction (XRD), Mössbauer effect (ME) and Fourier-transform infrared spectroscopy (FT-IR). The precipitation of various phases in heat treated glass samples with particle size in the nano-range was observed in X-ray pattern. Mössbauer spectra indicated that iron exist as a ferric ions occupy two non-equivalent tetrahedral sites in the sulfur-free samples, while ferrous ions in octahedral site in addition to the previous two ferric phases was appeared in sulfur-doped samples. Differential thermal analysis (DTA) was also carried out to monitor the crystallization temperature and the thermal stability of the obtained glasses. DC electrical conductivity measurements exhibit an enhancement of the conductivity of sulfur-doped glass sample compared with sulfur-free which make it more suitable to use as cathode in the solid batteries.

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Oxide‐based ternary composite solid‐state electrolyte for next‐generation lithium batteries

Ahmad,

Haseeb,

Shabbir

et al. 2024

Energy Storage

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Oxide‐based solid electrolytes are gaining popularity among researchers owing to their great structural stability. In this work, a novel oxide‐based ternary composite (AlPO4‐SiO2‐Li4P2O7) electrolyte is synthesized via a conventional solid‐state process with excellent water stability and high ionic conductivity. The crystallographic structure of ternary composite is confirmed using x‐ray diffraction and has a significant effect on ionic conductivity. The thermogravimetric analysis result shows a 22.26 wt% loss in the region of 25°C to 900°C due to the evaporation of volatile constituents, including nitrates, carbonates, and moisture. Surface analysis results revealed compact morphology and low porosity with arbitrary grain sizes. Electrochemical impedance spectroscopy has been used to evaluate ionic conductivities. The Mn‐ternary composite sintered at 900°C has shown ionic conductivity of 1.63 × 10−6 S/cm at ambient temperature. 8 wt%‐LiBr enhanced the ionic conductivity up to 1.68 × 10−4 S/cm by significantly reducing the grain boundaries without high‐temperature sintering. Results suggested the suitability of LiBr mixed ternary composites as a favorite candidate for lithium batteries in terms of safety, stability, and high ionic conductivity.

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Study of nanostructure and ionic conductivity of Li1.3Nb0.3V1.7(PO4)3 glass ceramics used as cathode material for solid batteries

Cited by 26 publications

References 43 publications

Role of Sulfur as a Reducing Agent for the Transition Metals Incorporated into Lithium Silicate Glass

Role of Sulfur as a Reducing Agent for the Transition Metals Incorporated into Lithium Silicate Glass

Effect of Sulfur on the Structure and Physical Properties of Vanadium-Iron-Lithium-Silicate Glass and Glass-Ceramics Nano Composite

Oxide‐based ternary composite solid‐state electrolyte for next‐generation lithium batteries

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