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Gas explosions and thermal runaways during external heating abuse of commercial lithium-ion graphite-LiCoO2 cells at different levels of ageing
RISE - Research Institutes of Sweden, Säkerhet och transport, Elektronik. Chalmers University of Technology, Sweden.ORCID-id: 0000-0001-5364-449x
Chalmers University of Technology, Sweden.
University of Gothenburg, Sweden.
University of Gothenburg, Sweden.
Vise andre og tillknytning
2018 (engelsk)Inngår i: Journal of Power Sources, ISSN 03787753, Vol. 373, s. 220-231Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Commercial 6.8 Ah lithium-ion cells with different ageing/status have been abused by external heating in an oven. Prior to the abuse test, selected cells were aged either by C/2 cycling up to 300 cycles or stored at 60 °C. Gas emissions were measured by FTIR and three separate vents were identified, two well before the thermal runaway while the third occurred simultaneously with the thermal runaway releasing heavy smoke and gas. Emissions of toxic carbon monoxide (CO), hydrogen fluoride (HF) and phosphorous oxyfluoride (POF3) were detected in the third vent, regardless if there was a fire or not. All abused cells went into thermal runaway and emitted smoke and gas, the working cells also released flames as well as sparks. The dead cells were however less reactive but still underwent thermal runaway. For about half of the working cells, for all levels of cycle ageing, ignition of the accumulated battery released gases occurred about 15 s after the thermal runaway resulting in a gas explosion. The thermal runaway temperature, about 190 °C, varied somewhat for the different cell ageing/status where a weak local minimum was found for cells cycled between 100 and 200 times.

sted, utgiver, år, opplag, sider
2018. Vol. 373, s. 220-231
Emneord [en]
Gas explosion, Lithium-ion, Safety, Gas emission, Ageing, Thermal runaway
HSV kategori
Identifikatorer
URN: urn:nbn:se:ri:diva-32903DOI: 10.1016/j.jpowsour.2017.10.085Scopus ID: 2-s2.0-85034633253OAI: oai:DiVA.org:ri-32903DiVA, id: diva2:1168492
Forskningsfinansiär
Swedish Energy Agency, 35755-1Tilgjengelig fra: 2017-12-20 Laget: 2017-12-20 Sist oppdatert: 2019-01-08bibliografisk kontrollert

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