Overviews of dielectric energy storage materials and methods to improve energy storage density

0.90(0.88NaNbO3-0.12Bi(Ni0.5Zr0.5)O3)-0.10CaTiO3 Lead-Free Dielectric Ceramics with High Energy Storage Properties

“…In today’s increasingly shortage of energy, how to collect and utilize the renewable energy is an important issue. At present, batteries, dielectric energy storage capacitors and supercapacitors are the main power storage devices. , Among them, batteries produce a large number of environmental pollutants in various processes, such as manufacturing, use, and recycling. , Supercapacitors can store moderate amounts of energy, but the charging and discharging process generally takes a long time (a few seconds or even more than 10 s) . By contrast, dielectric energy storage capacitors have higher power density and shorter charging and discharging processes, which can meet the requirements of ultrahigh-power electronic systems .…”

“…At present, batteries, dielectric energy storage capacitors and supercapacitors are the main power storage devices. 1,2 Among them, batteries produce a large number of environmental pollutants in various processes, such as manufacturing, use, and recycling. 3,4 Supercapacitors can store moderate amounts of energy, but the charging and discharging process generally takes a long time (a few seconds or even more than 10 s).…”

Plasma-Enhanced Atomic Layer-Deposited Ti,Si-Doped ZrO2 Antiferroelectric Films for Energy Storage Capacitors

“…In recent years, with the rapid emergence of portable electronic gadgets, energy storage devices with miniaturization, lightweight, high integration, and low cost have become a new research hotspot. − At present, the mainstream energy storage devices include batteries, fuel cells, electrochemical capacitors, and dielectric capacitors. , Compared to other devices, dielectric capacitors exhibit superior energy storage performance such as high power density, ultrafast charging/discharging, long operating life, all solid state, and high reliability. , Dielectric materials that are employed as the insulators of dielectric capacitors include linear dielectrics, paraelectric dielectrics, ferroelectric dielectrics, relaxor ferroelectric dielectrics, and AFE dielectrics. Among these dielectrics, the AFE dielectrics are able to obtain greater ESD due to their unique polarization property, i.e., a transition between the AFE and FE phases could occur under the action of external electric field .…”

Significantly Enhanced Breakdown Strength and Energy Density in Nanocomposites by Synergic Modulation of Structural Design and Low-Loading Nanofibers

“…It is well known that the U d could be garnered from the integration of the electric displacement–electric field ( D – E ) loops and is calculated by the following equation , U normald = ∫ E d D where E is the applied electric field and D represents the electric displacement. Clearly, the enhancement of breakdown strength ( E b ) plays a critical role in realizing the high U d of dielectric capacitors. , In addition, the relative permittivity (ε r ) is also a major factor affecting the U d , which is associated with the D …”

“…Clearly, the enhancement of breakdown strength (E b ) plays a critical role in realizing the high U d of dielectric capacitors. 9,10 In addition, the relative permittivity (ε r ) is also a major factor affecting the U d , which is associated with the D. Dielectric nanocomposites have attracted wide attention in recent years, which are normally composed of inorganic fillers and polymer matrix, employing the properties of both. 2,11 According to previous investigations, the addition of ceramic nanoparticles with high ε r , such as BaTiO 3 , 12 CaCu 3 Ti 4 O 12 , 8 SrTiO 3 , 13 TiO 2 , 14 and BiFeO 3 , 15 into polymer matrix results in enhanced ε r compared to pristine polymers.…”