Preparation method of pvdf energy storage film

Can hydrothermal synthesis improve the dielectric properties of polyvinylidene fluoride (PVDF)?

In order to effectively store energy and better improve the dielectric properties of polyvinylidene fluoride (PVDF), this article uses hydrothermal synthesis to prepare spherical Na 0.5 Bi 0.5 TiO 3 (NBT) particles, and the obtained KH550-NBT was filled into PVDF matrix.

What is the energy storage density of BT/PVDF composite film?

Applied electric field of 200–1200 kV/cm, the 30 vol % BT/PVDF composite film had the maximum energy storage density, reaching 3.228 J/cm 3 at 900 kV/cm. When the electric field intensity increased from 1200 to 2800 kV/cm, the stores energy density of 15 vol % BT/PVDF composite film is 6.916 J/cm 3 at 1500 kV/cm. Fig. 11.

How to make NBT/PVDF composite film?

The KH550 modified NBT powder with mass fractions of (15 wt%, 20 wt%, 25 wt% and 30 wt%) were ultrasonically dispersed in 65 ml DMF for 2 h, and then 5 g PVDF powder was added to the mixed solution. After ultrasonic dispersion for 3 h, the NBT/PVDF composite film was prepared on the glass plate by casting method, and dried at 80 °C for 4 h.

What is the dielectric constant of BT/PVDF composite film?

The dielectric constant of 30 vol % BT/PVDF composite film reached 62 at 100 Hz, which was nearly 6.8 times higher than that of pure PVDF. The maximum energy storage density was 6.916 J/cm 3.

What is PVDF in BT/PVDF composite film?

The PVDF in BT/PVDF composite film was composed of α, β, γ. (2) The ε r of the composite film decrease with increasing frequency, which is a result of dipole polarization. When the BT content increased, the ε r of the BT/PVDF composite film also increased at the same frequency.

How are PVDF and PZC thin films fabricated?

The PVDF and PZC thin films were fabricated using the solution casting method, incorporating varying weight percentages of ZnO NPs. A comprehensive set of characterization studies was conducted to assess their properties. XRD analyses confirmed the presence of β-phase PVDF.