Mitigating battery thermal runaway through mild combustion

With the fast expansion of electric vehicle market, thermal runaway of Li-ion battery has become a major concern for ground transportation and public safety. Fundamentally, thermal runaway initiation of a Li-ion battery bears intrinsic similarity to a gas-phase thermal explosion process, where the s...

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Autores principales:	Peng Zhao, Lu Liu, Liwen Zhang, Yi Chen
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2022
Materias:	Thermal runaway S-curve Criticality Mild combustion Battery safety Chemical engineering TP155-156
Acceso en línea:	https://doaj.org/article/91ebfa466ede4b9db3355740670b172a
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spelling	oai:doaj.org-article:91ebfa466ede4b9db3355740670b172a2021-11-20T05:15:19ZMitigating battery thermal runaway through mild combustion2666-821110.1016/j.ceja.2021.100208https://doaj.org/article/91ebfa466ede4b9db3355740670b172a2022-03-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S266682112100123Xhttps://doaj.org/toc/2666-8211With the fast expansion of electric vehicle market, thermal runaway of Li-ion battery has become a major concern for ground transportation and public safety. Fundamentally, thermal runaway initiation of a Li-ion battery bears intrinsic similarity to a gas-phase thermal explosion process, where the system response is controlled by the competition between the heat generation and heat loss, each with distinct temperature dependence. In this work, the fundamentals of mild combustion described by the stretched S-curve is revisited from one-step overall reaction with and without reactant depletion. The key dimensionless parameter that can lead to mild combustion are identified. Furthermore, the critical state of Li-ion battery thermal runaway in the small Biot number limit has been theoretically and computationally analyzed using detailed thermochemistry of battery thermal runaway. With insight from the stretched S-curve concept, the conditions corresponding to the loss of criticality are investigated, where in principle only mild heat release can occur. It is found that reducing the reaction heat associated with negative-electrode and electrolyte has the strongest effect to mitigate thermal runaway, where the reaction heat of electrolyte decomposition plays a minor role. Li-ion battery thermal runaway can be mostly prevented if the reaction heat of the cathode and anode with electrolyte are both reduced by an order of magnitude. The results stimulate future experiments seeking novel battery materials, and can provide useful guidance on the screening of safer battery materials to reduce the possibility of thermal runaway.Peng ZhaoLu LiuLiwen ZhangYi ChenElsevierarticleThermal runawayS-curveCriticalityMild combustionBattery safetyChemical engineeringTP155-156ENChemical Engineering Journal Advances, Vol 9, Iss , Pp 100208- (2022)
institution	DOAJ
collection	DOAJ
language	EN
topic	Thermal runaway S-curve Criticality Mild combustion Battery safety Chemical engineering TP155-156
spellingShingle	Thermal runaway S-curve Criticality Mild combustion Battery safety Chemical engineering TP155-156 Peng Zhao Lu Liu Liwen Zhang Yi Chen Mitigating battery thermal runaway through mild combustion
description	With the fast expansion of electric vehicle market, thermal runaway of Li-ion battery has become a major concern for ground transportation and public safety. Fundamentally, thermal runaway initiation of a Li-ion battery bears intrinsic similarity to a gas-phase thermal explosion process, where the system response is controlled by the competition between the heat generation and heat loss, each with distinct temperature dependence. In this work, the fundamentals of mild combustion described by the stretched S-curve is revisited from one-step overall reaction with and without reactant depletion. The key dimensionless parameter that can lead to mild combustion are identified. Furthermore, the critical state of Li-ion battery thermal runaway in the small Biot number limit has been theoretically and computationally analyzed using detailed thermochemistry of battery thermal runaway. With insight from the stretched S-curve concept, the conditions corresponding to the loss of criticality are investigated, where in principle only mild heat release can occur. It is found that reducing the reaction heat associated with negative-electrode and electrolyte has the strongest effect to mitigate thermal runaway, where the reaction heat of electrolyte decomposition plays a minor role. Li-ion battery thermal runaway can be mostly prevented if the reaction heat of the cathode and anode with electrolyte are both reduced by an order of magnitude. The results stimulate future experiments seeking novel battery materials, and can provide useful guidance on the screening of safer battery materials to reduce the possibility of thermal runaway.
format	article
author	Peng Zhao Lu Liu Liwen Zhang Yi Chen
author_facet	Peng Zhao Lu Liu Liwen Zhang Yi Chen
author_sort	Peng Zhao
title	Mitigating battery thermal runaway through mild combustion
title_short	Mitigating battery thermal runaway through mild combustion
title_full	Mitigating battery thermal runaway through mild combustion
title_fullStr	Mitigating battery thermal runaway through mild combustion
title_full_unstemmed	Mitigating battery thermal runaway through mild combustion
title_sort	mitigating battery thermal runaway through mild combustion
publisher	Elsevier
publishDate	2022
url	https://doaj.org/article/91ebfa466ede4b9db3355740670b172a
work_keys_str_mv	AT pengzhao mitigatingbatterythermalrunawaythroughmildcombustion AT luliu mitigatingbatterythermalrunawaythroughmildcombustion AT liwenzhang mitigatingbatterythermalrunawaythroughmildcombustion AT yichen mitigatingbatterythermalrunawaythroughmildcombustion
_version_	1718419495288045568

Mitigating battery thermal runaway through mild combustion

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