Enhanced dielectric performance of PVDF composites with graphene-BaTiO3 nanohybrids as fillers

Reduced graphene oxide-BaTiO
₃
(RGO-BT) hybrids were successfully fabricated by using a hydrothermal reaction followed by an in situ thermal reduction of graphene oxide. RGO-BaTiO
₃
/PVDF (RGO-BT/PVDF) three-phase composites were prepared by simple blending and hot pressing. Dielectric performance of the composites with varied RGO-BT loading amounts was investigated. The RGO-BT/PVDF composites exhibited higher dielectric constant than that of pure PVDF while keeping low dielectric loss. The dielectric constant of the composites with 40wt% RGO-BT was 20 and the dielectric loss was 0.054 (20 °C, 1KHz).