Recent Progress and Future Prospects on All-Organic Polymer Dielectrics for Energy Storage Capacitors

Abstract

With the development of advanced electronic devices and electric power systems, polymer-based dielectric film capacitors with high energy storage capability have become particularly important. Compared with polymer nanocomposites with widespread attention, all-organic polymers are fundamental and have been proven to be more effective choices in the process of scalable, continuous, and large-scale industrial production, leading to many dielectric and energy storage applications. In the past decade, efforts have intensified in this field with great progress in newly discovered dielectric polymers, fundamental production technologies, and extension toward emerging computational strategies. This review summarizes the recent progress in the field of energy storage based on conventional as well as heat-resistant all-organic polymer materials with the focus on strategies to enhance the dielectric properties and energy storage performances. The key parameters of all-organic polymers, such as dielectric constant, dielectric loss, breakdown strength, energy density, and charge–discharge efficiency, have been thoroughly studied. In addition, the applications of computer-aided calculation including density functional theory, machine learning, and materials genome in rational design and performance prediction of polymer dielectrics are reviewed in detail. Based on a comprehensive understanding of recent developments, guidelines and prospects for the future development of all-organic polymer materials with dielectric and energy storage applications are proposed.

Ultrahigh Energy Density in Continuously Gradient‐Structured All‐Organic Dielectric Polymer Films

“…[34,35] In parallel to the organic/inorganic polymer nanocomposites, all-organic multiphase polymeric dielectrics have been reported for the improvement of energy storage performances. [36] For the fabrication of all-organic multiphase dielectrics, two miscible dielectric polymers with respective advantages can be directly mixed or blended; [37][38][39][40][41] on the other hand, one organic component can be incorporated as fillers or coated as the surface layer for another matrix polymer, [42,43] which have been demonstrated as effective approaches to tune the electrical displacement and breakdown behaviors of polymers. For instance, more recently, it has been demonstrated that the introduction of a polymethyl methacrylate nano-layer onto the surface of PVDF film enables modified surface defects and increased Young's modulus, leading to remarkably improved breakdown strength of 767.05 kV mm −1 in the PVDF-based all-organic dielectric polymer.…”

Preparation and application of dielectric polymers with high permittivity and low energy loss: A mini review

“…Currently, they are typically used in small electronic components such as polymer film capacitors and flexible wearable electronic devices. Dielectric capacitors have been widely utilized in many fields, such as microwave communication, pulse energy system, sustainable energy system, and electric vehicles, 125 as shown in Figure 10. Polymer film capacitors have the advantages of low dielectric loss, stable current density, and long service life 126 .…”

“…Application fields of dielectric capacitors 125 . Copyright 2021, American Chemical Society [Color figure can be viewed at wileyonlinelibrary.com]…”

Biodegradable Polymer Nanocomposites: A Review of Properties

“…Polymers are multifunctional materials that can be alternatives to other materials such as metals, glass, and other traditional materials [1][2][3][4][5]. They can be pure organic [6][7][8][9] or hybrid materials including coordination polymers or metal-organic frameworks (MOFs) [10,11,20,[12][13][14][15][16][17][18][19].…”