Effect of Hold Time on Electrical Properties of Lithium Zinc Borate Glass Ceramics for Energy Storage Applications

Conductivity spectra of heat-treated 50B 2 O 3 ·30Li 2 O·20ZnO glass samples for different hold times, 2 h, 4 h, 6 h, and 8 h, were investigated across a wide temperature range (413–573 K) and frequency range (0.1–10 6  Hz). Parameters like crossover frequency ( ω H ), frequency exponent (s), and di...

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Bibliographic Details
Published in:Journal of electronic materials 2024-09, Vol.53 (9), p.5682-5695
Main Authors: Pawaria, Suman, Ahlawat, Jyoti, Sharma, Preeti, Ohlan, Anil, Dahiya, Sajjan, Punia, Rajesh, Maan, Anup Singh
Format: Article
Language:English
Subjects:
Characterization and Evaluation of Materials
Chemistry and Materials Science
Crystallization
Direct current
Electrical properties
Electrical resistivity
Electrode materials
Electronics and Microelectronics
Energy storage
Frequency ranges
Glass ceramics
Heat treatment
Instrumentation
Lithium
Materials Science
Optical and Electronic Materials
Original Research Article
Photomicrographs
Solid State Physics
Zinc borate
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Summary:Conductivity spectra of heat-treated 50B 2 O 3 ·30Li 2 O·20ZnO glass samples for different hold times, 2 h, 4 h, 6 h, and 8 h, were investigated across a wide temperature range (413–573 K) and frequency range (0.1–10 6  Hz). Parameters like crossover frequency ( ω H ), frequency exponent (s), and direct current conductivity ( σ dc ) have been retrieved from the Almond West model fit of the experimental data of ac conductivity. The applicability of overlapping large polaron tunneling has been observed in the examined glass ceramics system. The activation energy determined from the conductivity, electric modulus, and impedance analysis shows a consistent trend. The glass composition 50B 2 O 3 ·30Li 2 O·20ZnO exhibits the highest value of conductivity ~ 8.3 × 10 −6 Scm −1 when crystallized for 4 h at 573 K, making it an ideal choice for electrode material in energy storage devices. An enhancement in electrical conductivity was observed by converting the 50B 2 O 3 ·30Li 2 O·20ZnO glass samples into glass ceramics. Formation of the layered structure was observed from SEM micrographs, which indicates that the studied glass ceramics are appropriate for electric double-layer capacitance fabrication (EDLC).
ISSN:0361-5235
1543-186X
DOI:10.1007/s11664-024-11265-9