Redox oscillations in 18650-type lithium-ion cell revealed by in operando Compton scattering imaging
Abstract
Compton scattering imaging using high-energy synchrotron x rays allows the visualization of the spatiotemporal 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 line shapes 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 timescale of the charging curve.
- Publication:
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Applied Physics Letters
- Pub Date:
- April 2021
- DOI:
- 10.1063/5.0048310
- arXiv:
- arXiv:2105.06379
- Bibcode:
- 2021ApPhL.118p1902S
- Keywords:
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- Physics - Applied Physics;
- Nonlinear Sciences - Pattern Formation and Solitons
- E-Print:
- 11 pages, 5 figures