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

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...

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Bibliographic Details
Published in:Energy storage (Hoboken, N.J. : 2019) N.J. : 2019), 2024-04, Vol.6 (3), p.n/a
Main Authors: Ahmad, Haseeb, Haseeb, Hafiz Muhammad, Shabbir, Altamash, Khan, Zuhair S., Noor, Tayyaba, Ali, Ghulam
Format: Article
Language:English
Subjects:
Aluminum phosphate
Ambient temperature
Carbonates
Conductivity
Crystal structure
Crystallography
dopants
Electrochemical impedance spectroscopy
Electrolytes
Grain boundaries
Grain size
Ion currents
Lithium batteries
Molten salt electrolytes
Silicon dioxide
Sintering (powder metallurgy)
Solid electrolytes
solid‐state electrolyte
Structural stability
Surface analysis (chemical)
ternary composite
Thermogravimetric analysis
Water stability
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Summary: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.
ISSN:2578-4862
2578-4862
DOI:10.1002/est2.619