Sun, W; Chen, X; Kubiak, P; Lopez, C M (2025) A new approach for health monitoring of cylindrical lithium-ion cells using X-ray computed tomography. Journal of Energy Storage, 111. 115375 ISSN 2352152X

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Abstract

Cylindrical cells are essential for industrial applications. However, health monitoring of cells remains a significant challenge. Ageing gradually occurs while cycling, and the internal structural changes of the cell related to this can serve as an early indication of cell failure. X-ray computer tomography (XCT) is an ideal method to quantify these changes. This paper proposes a new and robust method, based on a modified spiral function, to mathematically model the internal structure of cylindrical lithium-ion (Li-ion) cells. The sensitivity and robustness of the proposed method have been demonstrated using different types of cylindrical cells at different stages of their cycle life. [AW1] This method can also be used for failure analysis, and to evaluate cells for second life applications.

Item Type:	Article
Keywords:	Cylindrical cell, health monitoring, x-ray computed tomography, ageing, failure analysis, cell evaluation
Subjects:	Advanced Materials > Electrochemistry
Divisions:	Electromagnetic & Electrochemical Technologies
Identification number/DOI:	10.1016/J.EST.2025.115375
Last Modified:	19 May 2026 09:42
URI:	https://eprintspublications.npl.co.uk/id/eprint/10409