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Aging diagnostics in lithium-ion batteries with differential mechanical measurements

Author

Listed:
  • Clerici, Davide
  • Pistorio, Francesca
  • Somà, Aurelio

Abstract

This work investigates how the mechanical response of lithium-ion batteries evolves with aging and demonstrates how mechanical measurements can be used to estimate degradation mechanisms, presenting interesting advantages over traditional voltage-based methods. A lithium cobalt oxide-graphite battery was cycled over 1,000 times to a state of health of 70%, with periodic performance tests measuring capacity, resistance, voltage, temperature, and deformation during the charge/discharge cycles. The deformation measurements can be distinguished into a reversible component (expansion during charge recovered with the shrinkage during discharge) and an irreversible component (increase of the battery thickness through aging).

Suggested Citation

  • Clerici, Davide & Pistorio, Francesca & Somà, Aurelio, 2025. "Aging diagnostics in lithium-ion batteries with differential mechanical measurements," Applied Energy, Elsevier, vol. 386(C).
    • Handle: RePEc:eee:appene:v:386:y:2025:i:c:s0306261925002545
    DOI: 10.1016/j.apenergy.2025.125524
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