Thermal-runaway experiments on consumer Li-ion batteries with metal-oxide and olivin-type cathodes

Li-ion batteries play an ever-increasing role in our daily life. Therefore, it is important to understand the potential risks involved with these devices. In this work we demonstrate the thermal runaway characteristics of three types of commercially available Li-ion batteries with the format 18650....

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Bibliographic Details
Published in:RSC advances 2014-01, Vol.4 (7), p.3633-3642
Main Authors: Golubkov, Andrey W., Fuchs, David, Wagner, Julian, Wiltsche, Helmar, Stangl, Christoph, Fauler, Gisela, Voitic, Gernot, Thaler, Alexander, Hacker, Viktor
Format: Article
Language:English
Subjects:
Blends
Cathodes
Devices
Lithium-ion batteries
Metal oxides
Overheating
Safety
Thermal runaway
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Summary:Li-ion batteries play an ever-increasing role in our daily life. Therefore, it is important to understand the potential risks involved with these devices. In this work we demonstrate the thermal runaway characteristics of three types of commercially available Li-ion batteries with the format 18650. The Li-ion batteries were deliberately driven into thermal runaway by overheating under controlled conditions. Cell temperatures up to 850 degree C and a gas release of up to 0.27 mol were measured. The main gas components were quantified with gas-chromatography. The safety of Li-ion batteries is determined by their composition, size, energy content, design and quality. This work investigated the influence of different cathode-material chemistry on the safety of commercial graphite-based 18650 cells. The active cathode materials of the three tested cell types were (a) LiFePO sub(4), (b) Li(Ni sub(0.45)Mn sub(0.45)Co sub(0.10))O sub(2) and (c) a blend of LiCoO sub(2) and Li(Ni sub(0.50)Mn sub(0.25)Co sub(0.25))O sub(2).
ISSN:2046-2069
2046-2069
DOI:10.1039/C3RA45748F