UCL Discovery
UCL home » Library Services » Electronic resources » UCL Discovery

Identifying the Cause of Rupture of Li‐Ion Batteries during Thermal Runaway

Finegan, DP; Darcy, E; Keyser, M; Tjaden, B; Heenan, TMM; Jervis, R; Bailey, JJ; ... Shearing, PR; + view all (2018) Identifying the Cause of Rupture of Li‐Ion Batteries during Thermal Runaway. Advanced Science , 5 (1) , Article 1700369. 10.1002/advs.201700369. Green open access

[img]
Preview
Text
Finegan_et_al-2018-Advanced_Science.pdf - Published version

Download (7MB) | Preview

Abstract

As the energy density of lithium‐ion cells and batteries increases, controlling the outcomes of thermal runaway becomes more challenging. If the high rate of gas generation during thermal runaway is not adequately vented, commercial cell designs can rupture and explode, presenting serious safety concerns. Here, ultra‐high‐speed synchrotron X‐ray imaging is used at >20 000 frames per second to characterize the venting processes of six different 18650 cell designs undergoing thermal runaway. For the first time, the mechanisms that lead to the most catastrophic type of cell failure, rupture, and explosion are identified and elucidated in detail. The practical application of the technique is highlighted by evaluating a novel 18650 cell design with a second vent at the base, which is shown to avoid the critical stages that lead to rupture. The insights yielded in this study shed new light on battery failure and are expected to guide the development of safer commercial cell designs.

Type: Article
Title: Identifying the Cause of Rupture of Li‐Ion Batteries during Thermal Runaway
Open access status: An open access version is available from UCL Discovery
DOI: 10.1002/advs.201700369
Publisher version: https://doi.org/10.1002/advs.201700369
Language: English
Additional information: © 2017 The Authors. Published by WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim. This is an open access article under the terms of the Creative Commons Attribution License 4.0 (https://creativecommons.org/licenses/by/4.0/).
Keywords: high‐speed imaging, Li‐ion batteries, thermal runaway, venting, X‐ray CT
UCL classification: UCL
UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Chemical Engineering
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Electronic and Electrical Eng
URI: https://discovery.ucl.ac.uk/id/eprint/10041857
Downloads since deposit
42Downloads
Download activity - last month
Download activity - last 12 months
Downloads by country - last 12 months

Archive Staff Only

View Item View Item