Sturm, Johannes (2018): Non-Destructive Detection of Local Aging in Lithium-Ion Pouch Cells by Multi-Directional Laser Scanning. Version 1. 4TU.ResearchData. dataset. https://doi.org/10.4121/uuid:c10a6b3f-efe9-41ce-99f6-4093df68c653

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Categories

• Electrical and Electronic Engineering

Keywords

Aging Laser scanning Lithium-ion battery Swelling

Licence

CC0

Collection

• EVERLASTING: Electric Vehicle Enhanced Range, Lifetime And Safety Through INGenious battery management.

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by Johannes Sturm

Understanding the mechanical activity of lithium-ion cells during cycling and its connection with aging phenomena is essential to improve cell design and operation strategies. Previous studies of lithium-ion pouch cells [B. Rieger et al., Journal of Energy Storage, 8, 1 (2016)] have shown non-uniform swelling with local displacement overshoots during charging. In this experimental work, a novel three-dimensional laser scanning method is used to investigate local reversible and irreversible thickness changes of six commercial LiCoO2/graphite cells during a cyclic aging experiment. Three cycle scenarios were included and two cells each were exposed to a specific temperature and charging rate. The cells showing local displacement overshoots also exhibit non-uniform distributions of irreversible thickness change. Post-mortem analysis showed largely inhomogenously degraded surfaces of the single anode layers. It is shown that the cells’ irreversible thickness change correlates with capacity fade and internal resistance increase monitored via electrochemical impedance spectroscopy.

History

• 2018-11-15 first online, published, posted

Publisher

Journal of the Electrochemical Society

Format

media types: application/octet-stream, application/pdf, application/vnd.openxmlformats-officedocument.spreadsheetml.sheet, application/zip, image/png

References

• https://doi.org/10.1149/2.0161707jes

Funding

• European Commission, EVERLASTING 713771

Organizations

Technical University of Munich, Institute for Electrical Energy Storage Technology

Contributors

• Jossen, A. (Andreas)
• Rheinfeld, A. (Alexander)
• Rieger, B. (Bernhard)
• Spingler, F.B. (Franz Benjamin)