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Are Lithium Ion Cells Intrinsically Safe?
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Nov 2013
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Source: IEEE Trans Ind Appl. 2013; 49(6):2451-2460.
[PDF-2.93 MB]
Details:
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Alternative Title:IEEE Trans Ind Appl
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Description:National Institute for Occupational Safety and Health researchers are studying the potential for Li-ion-battery thermal runaway from an internal short circuit in equipment approved as permissible for use in underground coal mines. Researchers used a plastic wedge to induce internal short circuits for thermal runaway susceptibility evaluation purposes, which proved to be a more severe test than the flat plate method for selected Li-ion cells. Researchers conducted cell crush tests within a 20-L chamber filled with 6.5% CH4-air to simulate the mining hazard. Results indicate that LG Chem ICR18650S2 LiCoO2 cells pose a CH4 explosion hazard from a cell internal short circuit. Under specified test conditions, A123 Systems 26650 LiFePO4 cells were safer than the LG Chem ICR18650S2 LiCoO2 cells at a conservative statistical significance level.
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Pubmed ID:26166911
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Pubmed Central ID:PMC4499025
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Volume:49
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Issue:6
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