Redox oscillations in 18650-type lithium-ion cell revealed by in operando Compton scattering imaging

Compton scattering imaging using high-energy synchrotron x-rays allows the visualization of the spatio-temporal lithiation state in lithium-ion batteries probed in-operando. Here, we apply this imaging technique to the commercial 18650-type cylindrical lithium-ion battery. Our analysis of the linesh...

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Bibliographic Details
Published in:arXiv.org 2021-05
Main Authors: Suzuki, Kosuke, Suzuki, Shunta, Otsuka, Yuji, Tsuji, Naruki, Jalkanen, Kirsi, Koskinen, Jari, Hoshi, Kazushi, Honkanen, Ari-Pekka, Hasnain Hafiz, Sakurai, Yoshiharu, Kanninen, Mika, Huotari, Simo, Bansil, Arun, Sakurai, Hiroshi, Barbiellini, Bernardo
Format: Article
Language:English
Subjects:
Elastic scattering
Electric cells
Imaging
Imaging techniques
Lithium
Lithium-ion batteries
Oscillations
Rechargeable batteries
Synchrotron radiation
Synchrotrons
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Summary:Compton scattering imaging using high-energy synchrotron x-rays allows the visualization of the spatio-temporal lithiation state in lithium-ion batteries probed in-operando. Here, we apply this imaging technique to the commercial 18650-type cylindrical lithium-ion battery. Our analysis of the lineshapes of the Compton scattering spectra taken from different electrode layers reveals the emergence of inhomogeneous lithiation patterns during the charge-discharge cycles. Moreover, these patterns exhibit oscillations in time where the dominant period corresponds to the time scale of the charging curve.
ISSN:2331-8422
DOI:10.48550/arxiv.2105.06379