Quantitative characterisation of the layered structure within lithium-ion batteries using ultrasonic resonance
File(s)
Published version
OA Location
Author(s)
Type
Journal Article
Abstract
Lithium-ion batteries (LIBs) are becoming an important energy storage solution to achieve carbon neutrality, but it remains challenging to characterise their internal states for the assurance of performance, durability and safety. This work reports a simple but powerful non-destructive characterisation technique, based on the formation of ultrasonic resonance from the repetitive layers within LIBs. A physical model is developed from the ground up, to interpret the results from standard experimental ultrasonic measurement setups. As output, the method delivers a range of critical pieces of information about the inner structure of LIBs, such as the number of layers, the average thicknesses of electrodes, the image of internal layers, and the states of charge variations across individual layers. This enables the quantitative tracking of internal cell properties, potentially providing new means of quality control during production processes, and tracking the states of health and charge during operation.
Date Issued
2022-06
Date Acceptance
2022-03-30
Citation
Journal of Energy Storage, 2022, 50, pp.1-14
ISSN
2352-152X
Publisher
Elsevier
Start Page
1
End Page
14
Journal / Book Title
Journal of Energy Storage
Volume
50
Copyright Statement
© 2022 The Author(s). Published by Elsevier Ltd. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).
License URL
Sponsor
Innovate UK
Identifier
https://www.sciencedirect.com/science/article/pii/S2352152X22006016?via%3Dihub
Grant Number
104427
Publication Status
Published
Date Publish Online
2022-04-09