Flexible BaTiO3/PVDF gradated multilayer nanocomposite film with enhanced dielectric strength and high energy density

BaTiO₃/PVDF nanocomposite films with high flexibility and gradated BaTiO₃ distribution structure are fabricated. These films show high dielectric constants of 20–25, a maximal discharged energy density value of 19.37 J cm⁻³ and dielectric breakdown strengths of up to 495 kV mm⁻¹.