A Coupled Electrochemical-Thermal Failure Model for Predicting the Thermal Runaway Behavior of Lithium-Ion Batteries

Content Provider	United States Department of Energy Office of Scientific and Technical Information (OSTI.GOV)
Author	Feng, Xuning He, Xiangming Ouyang, Minggao Wang, Li Lu, Languang Ren, Dongsheng Santhanagopalan, Shriram
Organization	National Renewable Energy Lab. (NREL), Golden, CO (United States)
Abstract	Thermal runaway is always a troublesome problem that hinders the safe application of high energy lithium-ion batteries. There is an urgent need to interpret the voltage and temperature changes and their underlying mechanisms during thermal runaway, in order to guide the safe design of a battery system. This paper is dedicated to building a coupled electrochemical-thermal model that can well predict the voltage drop and temperature increase during thermal runaway. The model can capture the underlying mechanism of 1) the capacity degradation under high temperature; 2) the internal short circuit caused by the thermal failure of the separator; and 3) the chemical reactions of the cell components that release heat under extreme temperature. The model is validated using by experimental data, therefore the modeling analysis has high fidelity. We employ the model to analyze 1) the capacity degradation under extreme temperature; 2) the influence of the SEI decomposition and regeneration on the thermal runaway behavior; 3) the heat generation by internal short circuit in the thermal runaway process. In conclusion, the discussions presented here help extend the usage of lithium-ion batteries at extreme high temperature (>80 degrees C), and guide the safe design of lithium-ion batteries with less hazard level during thermal runaway.
Sponsorship	USDOE Office of Energy Efficiency and Renewable Energy (EERE)
Related Links	https://www.osti.gov/biblio/1492506
Starting Page	A3748
Ending Page	A3765
Page Count	18
File Format	PDF
ISSN	00134651
DOI	10.1149/2.0311816jes
Journal	Journal of the Electrochemical Society
Volume Number	165
Issue Number	16
Language	English
Publisher	The Electrochemical Society
Publisher Date	2018-12-06
Publisher Department	National Renewable Energy Lab. (NREL), Golden, CO (United States)
Publisher Place	United States
Access Restriction	Open
Subject Keyword	ENERGY STORAGE batteries energy storage battery safety lithium-ion batteries thermal runaway
Content Type	Text
Resource Type	Article
Subject	Surfaces, Coatings and Films Materials Chemistry Renewable Energy, Sustainability and the Environment Electronic, Optical and Magnetic Materials Condensed Matter Physics Electrochemistry