Abstract
Heat release within a Li-ion battery is a significant safety concern. If the temperature rises above a certain threshold, secondary chemical reactions begin with potential thermal runaway outcomes. This work investigates spatially dependent electrolyte conditions in the presence of a thermal gradient to produce an electrolyte-centric thermal runaway model in the absence of passage of electrical current. Li ions, momentum, and thermal flux are the main components of the analysis, which accounts for free convection within the electrolyte. Numerical simulation techniques are used for this purpose. The model shows that hot spots can be found at the interface between the anode and the liquid electrolyte. The temperature trends are in line with previous thermal models for an entire Li-ion cylindrical battery. A thorough comprehension of the transport processes inside the battery contributes to mitigate damage induced due to thermal abuse conditions.
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The datasets generated during the current study are available from the corresponding author on reasonable request.
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Acknowledgements
This work was supported by the U.S. Office of Naval Research, through Grant: N00014-18-1-2732.
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Guillamon, J.I., Love, C.T., Carter, R. et al. Electrolyte conditions in lithium-ion batteries in presence of a thermal gradient. MRS Advances 6, 564–569 (2021). https://doi.org/10.1557/s43580-021-00074-5
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DOI: https://doi.org/10.1557/s43580-021-00074-5