Effects of Electron-Beam Radiation on the Dielectric Properties of PVA/xNiO Nanocomposite for Energy Storage Applications

Abstract

For energy storage applications, a material that has high dielectric permittivity, low loss factor, strong thermal resistance, easy processability, and low cost are highly desirable. In the present study, PVA/xNiO nanocomposite films with different NiO contents of (0, 10, 50 and 100) wt% were prepared by casting technology. The PVA/xNiO of 50 wt% NiO has been irradiated with 3 MeV electron beam at a dose of 50 kGy at room temperature in order to investigate the modifications induced in its dielectric properties. The results show that the NiO nanoparticles are well incorporated inside the PVA matrix and the crystallite size of NiO has been decreased upon doping by 50 wt% NiO from 15.45 to 11.44 nm. Also, PVA/(50%)NiO nanocomposite show indirect allowed optical transition (3.43 eV) with relatively high dielectric constant (7.60 to 9.55) and low loss factor (< 0.1) at high frequency (1 MHz) and the entire indicated range of temperature which proposes to use this material in energy storage applications. The electron beam radiation has increased the dielectric constant (10.52 to 13.94) which is preferable. However, a slight increase is observed in the loss factor (< 0.109).

An investigation of structural, optical, and electrical properties of poly(3‐hexylthiophene)/reduced graphene oxide nanocomposites for electronic and optoelectronic applications

“…Generally, adding inorganic nanofillers to the polymer matrix enhances the physical and chemical properties of the hosting matrix 12–14 or even induces new properties 15,16 . Several attempts have been made to enhance the mobility of P3HT by increasing the conductive pathways.…”

“…Nevertheless, low mobilities less mechanical strength, and lack of stability are the major obstacles that limit its performance, thereby preventing it from industrialization. [8][9][10][11] Generally, adding inorganic nanofillers to the polymer matrix enhances the physical and chemical properties of the hosting matrix [12][13][14] or even induces new properties. 15,16 Several attempts have been made to enhance the mobility of P3HT by increasing the conductive pathways.…”