Advanced Materials

Enhanced Energy Storage and Suppressed Dielectric Loss in Oxide Core–Shell–Polyolefin Nanocomposites by Moderating Internal Surface Area and Increasing Shell Thickness

Authors

  • Lisa A. Fredin,

    1. Department of Chemistry Northwestern University, 2145 Sheridan Road, Evanston, IL 60208, USA
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  • Zhong Li,

    1. Department of Chemistry Northwestern University, 2145 Sheridan Road, Evanston, IL 60208, USA
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  • Mark A. Ratner,

    Corresponding author
    1. Department of Chemistry Northwestern University, 2145 Sheridan Road, Evanston, IL 60208, USA
    • Department of Chemistry Northwestern University, 2145 Sheridan Road, Evanston, IL 60208, USA
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  • Michael T. Lanagan,

    Corresponding author
    1. Center for Dielectric Studies, Materials Research Institute, The Pennsylvania State University, University Park, PA 16802-4800, USA
    • Center for Dielectric Studies, Materials Research Institute, The Pennsylvania State University, University Park, PA 16802-4800, USA.
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  • Tobin J. Marks

    Corresponding author
    1. Department of Chemistry Northwestern University, 2145 Sheridan Road, Evanston, IL 60208, USA
    • Department of Chemistry Northwestern University, 2145 Sheridan Road, Evanston, IL 60208, USA
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Abstract

Dielectric loss in metal oxide core/Al2O3 shell polypropylene nanocomposites scales with the particle surface area. By moderating the interfacial surface area between the phases and using increasing shell thicknesses, dielectric loss is significantly reduced, and thus the energy stored within, and recoverable from, capacitors fabricated from these materials is significantly increased, to as high as 2.05 J/cm3.

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