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Impedance characterization for electrode-level aging diagnosis of lithium-ion battery: A critical review

Author

Listed:
  • Yin, Shujuan
  • Liu, Yajie
  • Wang, Yu
  • Si, Yupeng
  • Xiao, Yukang
  • Su, Mengshuai
  • Zhou, Xing

Abstract

Electrochemical impedance spectroscopy (EIS) serves as a crucial electrochemical characterization technique, widely employed to analyze polarization components in lithium-ion batteries (LIBs) and diagnose battery aging mechanisms. Recently, with advancements in battery impedance measurement, modeling, and analysis, researchers have increasingly applied EIS to diagnose battery aging at the electrode level, thereby better supporting the development of high-performance, long-life LIBs. However, substantial variations still exist across different studies in terms of impedance measurement, modeling, and interpretation. To promote academic exchange in the field of EIS-based electrode aging diagnosis, this paper systematically reviews impedance data acquisition methods, impedance modeling approaches, and practical application cases for battery electrode-level aging diagnosis. It thoroughly analyzes the shortcomings of existing electrode diagnostic research and proposes future development recommendations, laying the foundation for optimizing LIBs electrode aging diagnostic technologies and advancing high-performance battery research.

Suggested Citation

  • Yin, Shujuan & Liu, Yajie & Wang, Yu & Si, Yupeng & Xiao, Yukang & Su, Mengshuai & Zhou, Xing, 2026. "Impedance characterization for electrode-level aging diagnosis of lithium-ion battery: A critical review," Applied Energy, Elsevier, vol. 412(C).
    • Handle: RePEc:eee:appene:v:412:y:2026:i:c:s0306261926003880
    DOI: 10.1016/j.apenergy.2026.127736
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