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Flame retardant coated polyolefin separators for the safety of lithium ion batteries

  • Materials (Organic, Inorganic, Electronic, Thin Films)
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Abstract

A thermally stable and flame-retardant separator is proposed to improve the safety of lithium ion batteries. The separator is prepared by dip-coating both sides of a conventional tri-layer polyolefin separator with brominated poly(2,6-dimethyl-1,4-phenylene oxide) (BPPO). Significantly reduced thermal shrinkage and flammability are exhibited without decreases in the pore size or porosity of the conventional separator. By using the BPPO-coated separator, an electrochemical half-cell composed of a lithium metal anode and a LiCoO2 cathode are successively tested. The resulting stable cycle performances are demonstrated. It is expected that the BPPO-coated separator can be a capable candidate as a separator for the safe of lithium ion batteries.

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Authors and Affiliations

  1. School of Environmental Science and Engineering, Gwangju Institute of Science and Technology (GIST), 123, Cheomdan-gwagiro (Oryong-dong), Buk-gu, Gwangju, 500-712, Korea

    Ju-Young Lee, Sung-Hee Shin & Seung-Hyeon Moon

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  1. Ju-Young Lee
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  2. Sung-Hee Shin
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  3. Seung-Hyeon Moon
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Correspondence to Seung-Hyeon Moon.

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Lee, JY., Shin, SH. & Moon, SH. Flame retardant coated polyolefin separators for the safety of lithium ion batteries. Korean J. Chem. Eng. 33, 285–289 (2016). https://doi.org/10.1007/s11814-015-0119-6

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  • DOI: https://doi.org/10.1007/s11814-015-0119-6

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