Computational Simulation for Breakdown and Energy Storage Performances with Optimization in Polymer Dielectrics

Abstract

The breakthrough of energy storage technology will enable energy distribution and adaptation across space‐time, which is revolutionary for the generation of energy. Optimizing the energy storage performance of polymer dielectrics remains challenging via the physical process of electrical breakdown in solid dielectrics is hard to be intuitively obtained. In this review article, the application of computational simulation technologies is summarized in energy‐storage polymer dielectrics and the effect of control variables and design structures on the material properties with an emphasis on dielectric breakdown and energy storage performance are highlighted. The prediction and evaluation of material properties by combining various data analysis methods are reviewed. Finally, the outlook and challenges are discussed based on their current developments. This article covers not only an overview of the state‐of‐the‐art advances of breakdown modeling in energy‐storage polymer dielectrics but also the prospects that provide a new knob to synthesize high energy‐storage polymer dielectrics via computational simulation and a new research paradigm.

Constructing asymmetric gradient structures to enhance the energy storage performance of PEI-based composite dielectrics

“…Breakthrough and proliferation of energy storage technology will enable energy distribution and adaptation across time and space, which is revolutionary for the generation and consumption of energy. 1–3 Dielectric capacitors possess a high power density and rapid charge/discharge ability within a short time, making them extensively applicable in domains such as high-power electronic devices, new energy vehicles, and grid storage systems. 4–6 Compared to inorganic dielectric capacitors, polymer dielectric capacitors exhibit characteristics such as high breakdown strength ( E b ), low dielectric loss (tan δ ), and excellent processability, providing a broader scope for the structural design of dielectric film capacitors.…”

Energy storage enhancement of sandwich-structured nanocomposites with mono/adjacent-layer design and their synergistic effect optimization

“…Secondly, P layer is comprised of 2D Ni(OH) 2 nanosheets and pure P(VDF-HFP), resulting in a superior polarization ability due to the combined effects of polar ferroelectric P(VDF-HFP), high ε r of Ni(OH) 2 and the corresponding interfacial polarizations [44]. Thirdly, interfacial barriers, which could be optimized by the regulation of dielectric and conduction contrast of adjacent layers, also aid in improving E b and polarizations [45]. By the way, the decreased leakage current, which is resulted by enhanced E b and insulation ability, accompanied by reduced P r also assist elevating η of nanocomposites, resulting in improved energy storage performances.…”

Ultrahigh energy storage capacity in multilayer-structured cellulose-based dielectric capacitors caused by interfacial polarization-coupled Schottky barrier height

“…According to the material state, polymer-based capacitors are closer to practical applications than bulks and epitaxial thin films owing to their ease of processing and appreciable total storage capacity. 1–7 Since 2006, most studies on flexible dielectric energy storage/conversation materials were focused on polyvinylidene fluoride (PVDF) and its copolymers. 8–10 An energy storage density (ESD) of over 17 J cm −3 was obtained in P(VDF-CTFE) by defect modification at that time.…”