Effect of BaTiO₃Nanofillers on the Energy Storage Performance of Polymer Nanocomposites

Abstract

Polymer nanocomposite is a promising substitute for the charge‐storage dielectric material in capacitors. Barium titanate/polycarbonate (BT/PC) nanocomposite is one of the system due to its comprehensive excellent dielectric properties. As the dielectric response of nanocomposite depends strongly on the size of the fillers, concentration of fillers in the composite system. In this study, BT/PC nanocomposites (BT = 1‐5%) with thickness of 100 µm were fabricated to reveal the effect of the fillers on the energy storage performance of the polymer nanocomposites. Owing to the variable concentration and good dispersibility of the nanofillers, the nanocomposites with small concentration of BT particles show more uniform and denser microstructures. Moreover, with the increase of filler concentration, dielectric results indicate a breakdown strength enhancement in the nanocomposites with BT fillers, which is quite different from the nanocomposites with normal fillers, and therefore leads to the superior energy storage performance. This study demonstrates a strategy of obtaining large dielectric constants and energy densities in ceramic/polymer composites for energy storage device applications.

A Decisive Study on Dielectric Response of Bi<sub>2</sub>O<sub>3</sub>/Polystyrene & Bi<sub>2</sub>O<sub>3</sub>/PVDF Composite as Flexible Electrodes for Energy Storage

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High performance of the sodium‐ion conducting flexible polymer blend composite electrolytes for electrochemical double‐layer supercapacitor applications

“…10 In recent years, the demand for energy storage and sustainable energy use has increased significantly. To overcome this, lithium-ion batteries, lithiumair batteries, sodium-ion batteries, and EDLC supercapacitors have been developed 11 . The development of electrolyte materials plays an important role in all solidstate devices (e.g., supercapacitors, batteries, and electronic devices) because of their applicability to trade off ions between the electrodes.…”

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“…Polycarbonate (PC) is a thermoplastic polymer with enhanced thermal stability [32,33] and mechanical stiffness [34], and it is used in a wide range of applications [35], such as photonics [36], automotive and aeronautic industries [33,37]. At the same time, the composites of PC with graphene have also been widely studied as promising materials for 3D printing [38], photoactuators [39] and energy storage applications [40]. In addition, based on the studied electrochemical properties of PC [41], it can be used as a supercapacitor membrane [42,43] or as a polymer electrolyte [44,45].…”