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Simultaneous neutron and X-ray tomography for ex-situ 3D visualization of graphite anode degradation from extremely fast-charged lithium-ion batteries

Published

Author(s)

Maha Yusuf, Jacob LaManna, Partha Paul, David Agyeman-Budu, Chuntian Cao, Alison Dunlop, Andrew Jansen, Bryant Polzin, Stephen Trask, Tanvir Tanim, Eric Dufek, Vivek Thampy, Hans-Georg Steinruck, Michael Toney, Johanna Weker

Abstract

Extreme fast charging (XFC) of commercial lithium-ion batteries (LIBs) in ≤10-15 minutes will significantly advance the deployment of electric vehicles globally. However, XFC leads to considerable capacity fade, mainly due to graphite anode degradation. Non-destructive three-dimensional (3D) investigation of XFC-cycled anodes is crucial to connect degradation to capacity loss. Here, we demonstrate the viability of simultaneous neutron and X-ray tomography (NeXT) for ex-situ 3D visualization of graphite anode degradation. NeXT is advantageous because of sensitivity of neutrons to Li and H and X-rays to Cu. We combine the neutron and X-ray tomography with micron resolution for material identification and segmentation on one pristine and one XFC-cycled graphite anode, thereby underscoring the benefits of the simultaneous nature of NeXT. Our ex-situ results pave the way for the design of NeXT-friendly LIB geometries that will allow operando and/or in-situ 3D visualization of graphite anode degradation during XFC.
Citation
Cell Reports Physical Science
Pub Type
Journals

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Keywords

Neutron imaging, X-ray imaging, tomography, extreme-fast charging, lithium-ion batteries
Neutron research, Materials characterization and Alternative energy

Citation

Yusuf, M. , LaManna, J. , Paul, P. , Agyeman-Budu, D. , Cao, C. , Dunlop, A. , Jansen, A. , Polzin, B. , Trask, S. , Tanim, T. , Dufek, E. , Thampy, V. , Steinruck, H. , Toney, M. and Weker, J. (2022), Simultaneous neutron and X-ray tomography for ex-situ 3D visualization of graphite anode degradation from extremely fast-charged lithium-ion batteries, Cell Reports Physical Science, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=935336 (Accessed March 21, 2025)

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Created November 16, 2022, Updated March 12, 2025