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Keywords:

  • capacitors;
  • nanocomposites;
  • energy storage;
  • dielectrics
Thumbnail image of graphical 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.