title: Electrospun core-shell microfiber separator with thermal-triggered flame-retardant properties for lithium-ion batteries.
abstract: Although the energy densities of batteries continue to increase, safety problems (for example, fires and explosions) associated with the use of highly flammable liquid organic electrolytes remain a big issue, significantly hindering further practical applications of the next generation of high-energy batteries. We have fabricated a novel "smart" nonwoven electrospun separator with thermal-triggered flame-retardant properties for lithium-ion batteries. The encapsulation of a flame retardant inside a protective polymer shell has prevented direct dissolution of the retardant agent into the electrolyte, which would otherwise have negative effects on battery performance. During thermal runaway of the lithium-ion battery, the protective polymer shell would melt, triggered by the increased temperature, and the flame retardant would be released, thus effectively suppressing the combustion of the highly flammable electrolytes.
authors.affiliation: Department of Materials Science and Engineering, Stanford University, CA 94305, USA.
authors.forename: Kai
authors.initials: K
authors.lastname: Liu
authors.affiliation: Department of Materials Science and Engineering, Stanford University, CA 94305, USA.
authors.forename: Wei
authors.initials: W
authors.lastname: Liu
authors.affiliation: Department of Materials Science and Engineering, Stanford University, CA 94305, USA.
authors.forename: Yongcai
authors.initials: Y
authors.lastname: Qiu
authors.affiliation: Department of Materials Science and Engineering, Stanford University, CA 94305, USA.
authors.forename: Biao
authors.initials: B
authors.lastname: Kong
authors.affiliation: Department of Materials Science and Engineering, Stanford University, CA 94305, USA.
authors.forename: Yongming
authors.initials: Y
authors.lastname: Sun
authors.affiliation: Department of Chemical Engineering, Stanford University, CA 94305, USA.
authors.forename: Zheng
authors.initials: Z
authors.lastname: Chen
authors.affiliation: Department of Materials Science and Engineering, Stanford University, CA 94305, USA.
authors.forename: Denys
authors.initials: D
authors.lastname: Zhuo
authors.affiliation: Department of Materials Science and Engineering, Stanford University, CA 94305, USA.
authors.forename: Dingchang
authors.initials: D
authors.lastname: Lin
authors.affiliation: Department of Materials Science and Engineering, Stanford University, CA 94305, USA.; Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA 94025, USA.
authors.forename: Yi
authors.initials: Y
authors.lastname: Cui
keywords: Lithium ion batteries; flame-retardant; smart separator; thermal responsive