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June 12, 2026NDT & E InternationalOpen Access

Detection of cathode agglomerates in batteries applying laser infrared thermography

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Authors

SZStefan W. ZangerleQSQuirin SchmitzSSSimon Schmid

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Overview

Randomized trial demonstrates effective detection of defects in cathode electrodes, suggesting improved quality control methods.

Key Points

  • This research aims to utilize laser infrared thermography to identify defects in cathode electrode sheets during lithium-ion battery production.
  • Utilized laser infrared thermography (L-IRT) for non-destructive testing of electrode sheets.
  • Simulated object movement using a rotating roll during the testing process.
  • Evaluated data using active thermography evaluation methods, including the gradient method and thermal signal reconstruction.
  • The gradient method exhibited the highest performance metrics in identifying defects.
  • A distinct pattern indicative of defects was observed in non-calendered electrode sheets.
  • Potential optimizations of the slot die process could be achieved based on findings from laser infrared thermography.

Cite This Study

Zangerle et al. (2026) studied this question.

synapsesocial.com/papers/6a2ba1ca8101cf8926f01177https://doi.org/10.1016/j.ndteint.2026.103789
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