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In-operando high-speed tomography of lithium-ion batteries during thermal runaway.

ABSTRACT: Prevention and mitigation of thermal runaway presents one of the greatest challenges for the safe operation of lithium-ion batteries. Here, we demonstrate for the first time the application of high-speed synchrotron X-ray computed tomography and radiography, in conjunction with thermal imaging, to track the evolution of internal structural damage and thermal behaviour during initiation and propagation of thermal runaway in lithium-ion batteries. This diagnostic approach is applied to commercial lithium-ion batteries (LG 18650 NMC cells), yielding insights into key degradation modes including gas-induced delamination, electrode layer collapse and propagation of structural degradation. It is envisaged that the use of these techniques will lead to major improvements in the design of Li-ion batteries and their safety features.

SUBMITTER: Finegan DP

PROVIDER: S-EPMC4423228 | biostudies-other | 2015

REPOSITORIES: biostudies-other

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In-operando high-speed tomography of lithium-ion batteries during thermal runaway.

Finegan Donal P DP Scheel Mario M Robinson James B JB Tjaden Bernhard B Hunt Ian I Mason Thomas J TJ Millichamp Jason J Di Michiel Marco M Offer Gregory J GJ Hinds Gareth G Brett Dan J L DJL Shearing Paul R PR

Nature communications 20150428

Prevention and mitigation of thermal runaway presents one of the greatest challenges for the safe operation of lithium-ion batteries. Here, we demonstrate for the first time the application of high-speed synchrotron X-ray computed tomography and radiography, in conjunction with thermal imaging, to track the evolution of internal structural damage and thermal behaviour during initiation and propagation of thermal runaway in lithium-ion batteries. This diagnostic approach is applied to commercial ...[more]

PMID: 25919582

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