A La and Nb co-doped BaTiO3 film with positive-temperature-coefficient of resistance for thermal protection of batteries
A La and Nb co-doped BaTiO3 film with positive-temperature-coefficient of resistance for thermal protection of batteries
Battery safety is the number one priority for consumers and manufacturers, particularly for large-scale applications like electric vehicles and distributed energy storage systems, where the consequences of thermal runaway events can be devastating. Here we propose a novel approach to prevent battery thermal runaway by using La and Nb co-doped BaTiO3. The material is incorporated into a battery system as a thin film, having no effects on the room temperature operation, but rapidly switching off the battery current at high temperatures due to the positive temperature coefficient of resistivity (PTCR) exhibited by doped BaTiO3. La and Nb as co-dopants of BaTiO3 are found to be critical to ensure good room temperature conductivity combined with a significant PTCR effect. This work demonstrates the use of a purely inorganic PTCR material for thermal runaway protection for the first time. The high mechanical and chemical stability of the BaTiO3-based material proposed here makes it an advantageous competitor to current polymer-based protective switches.
11587 - 11599
Zhang, Min
dfc78617-c6bf-40d9-a643-427ba8f2c24f
Fop, Sacha
336731ce-2b16-4bc4-bc50-48b202613a0b
Kramer, Denis
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Garcia-Araez, Nuria
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Hector, Andrew L.
f19a8f31-b37f-4474-b32a-b7cf05b9f0e5
31 May 2022
Zhang, Min
dfc78617-c6bf-40d9-a643-427ba8f2c24f
Fop, Sacha
336731ce-2b16-4bc4-bc50-48b202613a0b
Kramer, Denis
1faae37a-fab7-4edd-99ee-ae4c30d3cde4
Garcia-Araez, Nuria
9358a0f9-309c-495e-b6bf-da985ad81c37
Hector, Andrew L.
f19a8f31-b37f-4474-b32a-b7cf05b9f0e5
Zhang, Min, Fop, Sacha, Kramer, Denis, Garcia-Araez, Nuria and Hector, Andrew L.
(2022)
A La and Nb co-doped BaTiO3 film with positive-temperature-coefficient of resistance for thermal protection of batteries.
Journal of Materials Chemistry A, 10 (21), .
(doi:10.1039/D2TA00998F).
Abstract
Battery safety is the number one priority for consumers and manufacturers, particularly for large-scale applications like electric vehicles and distributed energy storage systems, where the consequences of thermal runaway events can be devastating. Here we propose a novel approach to prevent battery thermal runaway by using La and Nb co-doped BaTiO3. The material is incorporated into a battery system as a thin film, having no effects on the room temperature operation, but rapidly switching off the battery current at high temperatures due to the positive temperature coefficient of resistivity (PTCR) exhibited by doped BaTiO3. La and Nb as co-dopants of BaTiO3 are found to be critical to ensure good room temperature conductivity combined with a significant PTCR effect. This work demonstrates the use of a purely inorganic PTCR material for thermal runaway protection for the first time. The high mechanical and chemical stability of the BaTiO3-based material proposed here makes it an advantageous competitor to current polymer-based protective switches.
Text
d2ta00998f
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Accepted/In Press date: 3 May 2022
e-pub ahead of print date: 3 May 2022
Published date: 31 May 2022
Additional Information:
Funding Information:
The authors thank EPSRC for support under the Industrial Strategy Challenge Fund (EP/R021295/1) and for an early career fellowship to NGA (EP/N024303/1). The raw data associated with figures in this manuscript and the ESI can be found at https://doi.org/10.5258/SOTON/D2206 .
Publisher Copyright:
© 2022 The Royal Society of Chemistry.
Identifiers
Local EPrints ID: 457315
URI: http://eprints.soton.ac.uk/id/eprint/457315
ISSN: 2050-7488
PURE UUID: eeba60fb-b89a-4bb2-abc2-90df4eb709d8
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Date deposited: 01 Jun 2022 16:31
Last modified: 17 Mar 2024 03:54
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Author:
Min Zhang
Author:
Sacha Fop
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