In-operando high-speed tomography of lithium-ion batteries during thermal runaway.
Nat Commun
; 6: 6924, 2015 Apr 28.
Article
em En
| MEDLINE
| ID: mdl-25919582
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.
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MEDLINE
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En
Ano de publicação:
2015
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Article