Identification and quantification of decomposition mechanisms in Lithium-ion batteries; Input to heat flow simulation for modeling thermal runaway

The risks and possible accidents related to the normal use of lithium-ion batteries remains a serious concern. In order to get a better understanding of thermal runaway (TR) the exothermic decomposition reactions in anode and cathode were studied, using a Simultaneous Thermal Analysis (STA)/ Gas Chromatography Mass Spectrometry (GC-MS)/ Fourier Transform Infrared (FTIR) spectrometer system. This hyphenated technique allowed the identification of the reaction mechanisms in each electrode, owing to the analysis of evolved gaseous species, of the amount of heat released and of mass loss. These results helped to get insight of the thermal events happening within a broader temperature range than covered in previously published models. This allowed the formulation of an improved thermal model to depict TR. The heat of reaction, the activation energy and the frequency factor (thermal triplets) for each major exothermic process were investigated and analysed, and their kinetics derived. These data can be used to successfully simulate the experimental heat flow

ADANOUJ Ibtissam;  KRISTON Akos;  RUIZ RUIZ Vanesa;  PFRANG Andreas; 

2022-06-27

JOURNAL OF VISUALIZED EXPERIMENTS

JRC122861

1940-087X (online),   

https://www.jove.com/t/62376,    https://publications.jrc.ec.europa.eu/repository/handle/JRC122861,   

doi:10.3791/62376 (online),