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Hidden risk: How pre-existing mechanical defects worsen battery safety under slight overcharge
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DOI：10.1016/j.apenergy.2026.128656.png)
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Abstract
En 中文
• Minor mechanical damage accelerates degradation and safety risk under overcharge in LIBs. • Degradation mode shifts with voltage: from local damage at 4.2 V to global reactions at 4.6 V. • Capacity fade alone fails to reveal latent internal short-circuit risk in pre-damaged cells. • Local separator weakening and plating occur at indentation site even under uniform aging. • Multi-parameter diagnostics are essential for safety assessment of coupled mechanical-electrical abuse.
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11
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2.6W
Citations:
17.8W
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