Journal of Electrical and Electronic Materials

"State of health"

Study on the Degradation Diagnosis Technology Using Lithium-Ion Battery Incremental Capacity Analysis Method and MISC Frequency Analysis: Wen-cheng Jin, Youn-sook Choi, Young-sik Oh, Jung-gug Do, Chul-woong Park, Soon-hyung Lee, Young-hoon Yun; J Korean Inst Electr Electron Mater Eng 2025;38(4):388-395. Published online July 1, 2025; DOI: https://doi.org/10.4313/JKEM.2025.38.4.6

Abstract
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Lithium-ion batteries are utilized as an energy source for electric vehicles because of their advantages such as excellent cyclability, high energy density, high capacity, high efficiency, and low price. However, lithium-ion batteries use combustible electrolytes, which have also reported problems related to fire safety. Therefore, research on the fire safety of lithium-ion batteries is actively being conducted. In this study, detection criteria for the fire safety of lithium-ion batteries were proposed through incremental capacity analysis (ICA) and frequency analysis. The experimental results showed that the battery micro internal short circuit (MISC) indicator could be identified through changes in specific frequency bands and fluctuations in the ICA curve.

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Thermal Stability of NCM622 Cathode Material for Li-ion Batteries: A Real-time Synchrotron X-ray Scattering Study
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