Perspective and Developments in Composite Films Combining Lead-Free Ferroelectric Ceramic and PVDF for Energy Storage Capacitors

To enhance the advancement of excellent energy storage capacity in lead-free dielectric capacitors, we conducted an extensive review of recent research articles focusing on the utilization of energy storage in various lead-free dielectric materials, including ceramics and polymer-based composites. Devices that can store and release electrical energy when needed are called energy storage capacitors. They are used in many different industries, including power electronics, electric cars, and renewable energy. However, conventional dielectric materials for capacitors have low energy density and high leakage current, which limit their performance and reliability. New materials that have a high energy density, little loss, and good stability must thus be developed. Using polyvinylidene fluoride (PVDF) using ferroelectric ceramic free of lead to make composite films is one approach that seems promising. Ferroelectric ceramics free of lead exhibit strong polarization and permittivity, while PVDF has high breakdown strength and flexibility. The composite films can achieve synergistic effects of both components and enhance the energy storage properties. This review article outlines the latest developments and difficulties in the synthesis, characterization, and creation of composite films for PVDF-based energy storage capacitors and lead-free ferroelectric ceramics. It also discusses the potential applications and prospects of these materials [1][2][3][4].