Factors influencing the dielectric properties of GO/MO nanocomposites: review.

In the last two decades, graphene oxide (GO) has gained popularity because of its multiple features and smart use in various fields in many areas. The abundantly rich metal oxide (MO) is added as a fuel component to deliver a good-quality engine for sustainable growth and applications. This review highlights the dielectric properties of graphene oxide/metal oxide nanocomposites (GO/MOs) and has established a detailed investigation of energy storage analysis. In this work, the critical examination of the dielectric behaviour of mentioned nanocomposites is studied at several frequencies and temperature ranges. Here, we tried to address and resolve a few challenges related to the development of the dielectric properties of nanocomposites. The development of good dielectrics solely depends on factors such as synthetic methods, toxicity level, chemical environment, morphological attributions, particle size, dangling patterns, defects and pores, energy density, nucleation crystal growth, and frequency–temperature dependency behaviours. The GO/MO nanocomposites include MOs such as transition MO, SnO₂, ZnO, CuO, Fe₂O₃, Ag₂O, Al₂O₃, TiO₂, and other metal oxide-based perovskite oxides that show extensive applications and dielectric behaviour with the ε′ up to 10⁶ with a maximum loss of 10 at different parameters. The inertness, robust attitude, and high stability of such nanocomposites also have increased their use in chemical industries, modern medical apparatus, and prosthetics in the bio-engineering field, petroleum, space vehicles and ballistics, microwave dielectrics, solid electrolytes, supercapacitors, and batteries. Furthermore, this discussion gives an idea of up-to-date achievements, current trends, and future directions in research on GO/MO nanocomposites for better performance in the enhancement of energy storage attitude and dielectric response. [ABSTRACT FROM AUTHOR]