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Comparative study of thermal runaway and cell failure of lab-scale Li-ion batteries using accelerating rate calorimetry
- Source :
- Journal of Industrial and Engineering Chemistry. 83:247-251
- Publication Year :
- 2020
- Publisher :
- Elsevier BV, 2020.
-
Abstract
- The safety of Li-ion batteries (LIBs) has long been a critical issue for their widespread application. The ever-increasing requirements for large-scale applications such as electric vehicles and stationary energy storage systems have spurred great interest in ensuring high standards of safety, which requires an understanding of the thermal runaway features of cells and modules. In this study, we evaluated the thermal runaway of pouch-type LIB cells with cell capacities of 33–3300 mA h by using accelerated rate calorimetry (ARC) and lab-made hotbox ramping measurements. The large-capacity cells (1000 and 3300 mA h) exhibited distinct stage behaviors of the self-heating rate in the ARC profiles and large exothermic reactions accompanied by an abrupt open-circuit voltage drop (internal short circuit) in the ramping test. The small-capacity cell (33 mA h) showed an incomplete thermal runaway feature. These findings were attributed to the large proportion of inactive components relative to the active components, which is discussed in terms of the heat capacity. The data sensitivity factor is also suggested as a reliable measure of thermal runaway evaluation of LIB cells.
- Subjects :
- Exothermic reaction
Materials science
Thermal runaway
General Chemical Engineering
Nuclear engineering
02 engineering and technology
Calorimetry
010402 general chemistry
021001 nanoscience & nanotechnology
01 natural sciences
Sensitivity (explosives)
Heat capacity
Energy storage
0104 chemical sciences
0210 nano-technology
Short circuit
Voltage drop
Subjects
Details
- ISSN :
- 1226086X
- Volume :
- 83
- Database :
- OpenAIRE
- Journal :
- Journal of Industrial and Engineering Chemistry
- Accession number :
- edsair.doi...........1abc23dd8ff6fd13c4589f6586afb118