Journal
RSC ADVANCES
Volume 5, Issue 70, Pages 57171-57186Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c5ra05897j
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- Austrian Federal Ministry for Transport, Innovation and Technology (BMVIT)
- Austrian Research Promotion Agency (FFG)
- province of Styria
- Styrian Business Promotion Agency (SFG)
- Federal Ministry of Science, Research and Economy (BMWFW)
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Thermal runaway characteristics of two types of commercially available 18650 cells, based on LixFePO4 and Li-x (Ni0.80Co0.15Al0.05) O-2 were investigated in detail. The cells were preconditioned to state of charge (SOC) values in the range of 0% to 143%; this ensured that the working SOC window as well as overcharge conditions were covered in the experiments. Subsequently a series of temperature-ramp tests was performed with the preconditioned cells. Charged cells went into a thermal runaway, when heated above a critical temperature. The following thermal runaway parameters are provided for each experiment with the two cell types: temperature of a first detected exothermic reaction, maximum cell temperature, amount of produced ventgas and the composition of the ventgas. The dependence of those parameters with respect to the SOC is presented and a model of the major reactions during the thermal runaway is made.
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