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Related Experiment Video

Updated: Apr 30, 2026

Characterization of Electrode Materials for Lithium Ion and Sodium Ion Batteries Using Synchrotron Radiation Techniques
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Optically-Coupled X-Ray Computed Laminography System for High-Speed Inspection of Lithium-Ion Batteries.

Jaeyoung Im1, Jun Heo1, Seunguk Cheon1

  • 1Department of Nuclear and Quantum Engineering, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea.

Advanced Science (Weinheim, Baden-Wurttemberg, Germany)
|November 21, 2025
PubMed
Summary

This study introduces a new X-ray computed laminography system that significantly speeds up microstructure inspection. The innovative design achieves high resolution and fast scanning for applications like lithium-ion battery analysis.

Keywords:
X‐ray computed laminographyhigh‐speed inspectionlithium‐ion batteryoptical magnification

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Area of Science:

  • Materials Science
  • Imaging Technology
  • Non-destructive Testing

Background:

  • Conventional X-ray computed tomography (CT) for microstructure inspection uses magnification, requiring micro-focus X-ray sources.
  • Micro-focus sources have low power, leading to long acquisition times, hindering high-throughput inspection.
  • Existing methods face a trade-off between spatial resolution and scan speed.

Purpose of the Study:

  • To develop a novel optically-coupled X-ray computed laminography system for high-speed microstructure inspection.
  • To overcome the limitations of conventional X-ray CT systems, particularly the slow scan times associated with micro-focus sources.
  • To enable high-throughput, in-line inspection of mass-produced components.

Main Methods:

  • Implemented an optically-coupled X-ray computed laminography setup with a scintillator in direct contact with the object.
  • Utilized a high-power X-ray tube with a large focal spot, enabled by the contact scintillator to minimize blurring.
  • Performed modulation transfer function (MTF) analysis to assess spatial resolution.

Main Results:

  • Achieved a spatial resolution of 38 µm using a 400 W X-ray tube with a 400 µm focal spot.
  • Demonstrated high-quality 3D imaging of lithium-ion batteries (LIBs) with a scan time as low as 2 seconds.
  • Obtained a contrast-to-noise ratio exceeding 3 for the LIB imaging.

Conclusions:

  • The proposed system effectively minimizes image blurring by placing the scintillator in contact with the object.
  • High-power X-ray sources can be used without sacrificing spatial resolution, significantly reducing scan times.
  • This technology enables high-throughput in-line inspection, overcoming the resolution-speed trade-off in X-ray imaging.