Journal
JOURNAL OF HAZARDOUS MATERIALS
Volume 318, Issue -, Pages 164-172Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jhazmat.2016.06.047
Keywords
Energy; Heat; Lithium ion battery; Calorimetry; Thermal runaway; Fire hazard
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The energy released by failure of rechargeable 18-mm diameter by 65-mm long cylindrical (18650) lithium ion cells batteries was measured in a bomb calorimeter for 4 different commercial cathode chemistries over the full range of charge using a method developed for this purpose. Thermal runaway was induced by electrical resistance (Joule) heating of the cell in the nitrogen-filled pressure vessel (bomb) to preclude combustion. The total energy released by cell failure, Delta H-f, was assumed to be comprised of the stored electrical energy E (cell potential x charge) and the chemical energy of mixing, reaction and thermal decomposition of the cell components, Delta U-rxn. The contribution of E and Delta U-rxn, to Delta H-f was determined and the mass of volatile, combustible thermal decomposition products was measured in an effort to characterize the fire safety hazard of rechargeable lithium ion cells. Published by Elsevier B.V.
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