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Abstract
Polycrystalline LiMnBO3 is a promising cathode material for Li-ion batteries. In this work, we investigated the thermal, structural and electrical properties of glassy and nanocrystallized materials having the same chemical composition. The original glass was obtained via a standard melt-quenching method. SEM and 7Li solid-state NMR indicate that it contains a mixture of two distinct glassy phases. The results suggest that the electrical conductivity of the glass is dominated by the ionic one. The dc conductivity of initial glass was estimated to be in the order of 10−18 S·cm−1 at room temperature. The thermal nanocrystallization of the glass produces a nanostructured glass-ceramics containing MnBO3 and LiMnBO3 phases. The electric conductivity of this glass-ceramics is increased by 6 orders of magnitude, compared to the starting material at room temperature. Compared to other manganese and borate containing glasses reported in the literature, the conductivity of the nanostructured glass ceramics is higher than that of the previously reported glassy materials. Such improved conductivity stems from the facilitated electronic transport along the grain boundaries.
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Authors (9)
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Przemysław Michalski
- Politechnika Warszawska Wydział Fizyki
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Agata Gołębiewska
- Politechnika Warszawska Wydział Fizyki
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Julien Trebosc
- University of Lille CNRS
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Olivier Lafon
- University of Lille CNRS
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Tomasz Pietrzak
- Politechnika Warszawska Wydział Fizyki
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Jan Nowiński
- Politechnika Warszawska Wydział Fizyki
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Marek Wasiucionek
- Politechnika Warszawska Wydział Fizyki
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Jerzy Garbarczyk
- Politechnika Warszawska Wydział Fizyki
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Details
- Category:
- Articles
- Type:
- artykuł w czasopiśmie wyróżnionym w JCR
- Published in:
-
SOLID STATE IONICS
no. 334,
pages 88 - 94,
ISSN: 0167-2738 - Language:
- English
- Publication year:
- 2019
- Bibliographic description:
- Michalski P., Gołębiewska A., Trebosc J., Lafon O., Pietrzak T., Ryl J., Nowiński J., Wasiucionek M., Garbarczyk J.: Properties of LiMnBO3 glasses and nanostructured glass-ceramics// SOLID STATE IONICS. -Vol. 334, (2019), s.88-94
- DOI:
- Digital Object Identifier (open in new tab) 10.1016/j.ssi.2019.02.006
- Verified by:
- Gdańsk University of Technology
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