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Flexible, Heat-Resistant, and Flame-Retardant Glass Fiber Nonwoven/Glass Platelet Composite Separator for Lithium-Ion Batteries

Author

Listed:
  • Ulrich Schadeck

    (Department of Materials Processing, University of Bayreuth, 95440 Bayreuth, Germany)

  • Kanat Kyrgyzbaev

    (Department of Materials Processing, University of Bayreuth, 95440 Bayreuth, Germany)

  • Heiko Zettl

    (Vitrulan Textile Glass GmbH, 95509 Marktschorgast, Germany)

  • Thorsten Gerdes

    (Department of Materials Processing, University of Bayreuth, 95440 Bayreuth, Germany)

  • Ralf Moos

    (Department of Functional Materials, Zentrum für Energietechnik (ZET), University of Bayreuth, 95440 Bayreuth, Germany)

Abstract

A new type of high-temperature stable and self-supporting composite separator for lithium-ion batteries was developed consisting of custom-made ultrathin micrometer-sized glass platelets embedded in a glass fiber nonwoven together with a water-based sodium alginate binder. The physical and electrochemical properties were investigated and compared to commercial polymer-based separators. Full-cell configuration cycling tests at different current rates were performed using graphite and lithium iron phosphate as electrode materials. The glass separator was high-temperature tested and showed a stability up to at least 600 °C without significant shrinking. Furthermore, it showed an exceptional wettability for non-aqueous electrolytes. The electrochemical performance was excellent compared to commercially available polymer-based separators. The results clearly show that glass platelets integrated into a glass fiber nonwoven performs remarkably well as a separator material in lithium-ion batteries and show high-temperature stability.

Suggested Citation

  • Ulrich Schadeck & Kanat Kyrgyzbaev & Heiko Zettl & Thorsten Gerdes & Ralf Moos, 2018. "Flexible, Heat-Resistant, and Flame-Retardant Glass Fiber Nonwoven/Glass Platelet Composite Separator for Lithium-Ion Batteries," Energies, MDPI, vol. 11(4), pages 1-14, April.
    • Handle: RePEc:gam:jeners:v:11:y:2018:i:4:p:999-:d:142236
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    References listed on IDEAS

    as
    1. Jun Young Kim & Dae Young Lim, 2010. "Surface-Modified Membrane as A Separator for Lithium-Ion Polymer Battery," Energies, MDPI, vol. 3(4), pages 1-20, April.
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    Cited by:

    1. Kuo Wang & Dongxu Ouyang & Xinming Qian & Shuai Yuan & Chongye Chang & Jianqi Zhang & Yifan Liu, 2023. "Early Warning Method and Fire Extinguishing Technology of Lithium-Ion Battery Thermal Runaway: A Review," Energies, MDPI, vol. 16(7), pages 1-35, March.

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