Piezoelectric and Dielectric Properties of ((K0.475Na0.495Li0.03)NbO3-0.003ZrO2)/PVDF Composites

Factors affecting the piezoelectric performance of ceramic-polymer composites: A comprehensive review

“…Although there is not much discrepancy in the loss tangent reported across the various volume fractions, it is essential to note that there are other important factors that may account for the dielectric loss of a material, such as defects during polarisation hysteresis [19,85], dielectric leakages [19,84] nature of the external environment and the technical process [39] that needs to be considered. Furtherly, in 2019, Kun Yu et al [96] also investigated the impact of ceramic volume on the dielectric performance of a (K0.475Na0.495Li0.03) NbO3-0.003ZrO2 (KNNL-Z)/PVDF hot-pressed composite. The authors reported that the addition of KNNLZ-ceramic powder to the composite led to an increase in the dielectric permittivity.…”

Antiferroelectric AgNbO3@KH550 Doped PVDF/PMMA Composites with High Energy Storage Performance

“…By adjusting the doping content of inorganic fillers, the energy storage density of polymer matrix composites can be further improved. [45,46] In this study, to improve the breakdown strength and energy storage density of the composites, PVDF and PMMA were blended, and hydrogen bonds were formed between PVDF and PMMA. The antiferroelectric filler AgNbO 3 modified by silane coupling agent KH550 was also introduced.…”

“…By adjusting the doping content of inorganic fillers, the energy storage density of polymer matrix composites can be further improved. [ 45,46 ]…”

Optimising the dielectric property of carbon nanotubes/P(VDF‐CTFE) nanocomposites by tailoring the shell thickness of liquid crystalline polymer modified layer

“…Based on Maxwell‐Garnett theory, lot of (e.g. 40 wt%) high‐ k nanofillers, such as Pb(Zr1‐xTix)O 3 , BaTiO 3 , SrTiO 3 , SiO 2 and TiO 2 [12–19], should be added into the polymer matrix to enhance the dielectric constant, resulting in deteriorating the flexibility and processability of the nanocomposites. According to Maxwell–Wagner–Sillars Polarisation Theory, when the volume fraction of electrically conductive nanofiller is close to but lower than the percolation threshold, the dielectric constant of the nanocomposites is obviously improved microcapacitors and space charge polarisation [20, 21], such as Ag, Ni, Fe, Fe 3 O 4 , Zn, ZnO, carbon nanotubes (CNTs) and graphene nanosheets [22–29].…”