Energy storage performance of sandwich structure composites with strawberry-like Ag@SrTiO3 nanofillers

Enhanced Energy Storage Performance of Doped Modified PC/PVDF Coblended Flexible Composite Films

“…3−8 Due to their simple processing, remarkable plasticity, and suppleness, polymer-based dielectric materials have drawn a lot of interest. 9−11 Among them, commercially available BOPP (biaxially oriented polypropylene) film capacitors, which benefit from a high break strength and minimal dielectric loss, are representative of commercial capacitors, 12−14 but their low dielectric constant (ε r ≈ 2.2) 15,16 limits their energy storage density U e to less than 5 J/cm 3 . It is, therefore, essential to develop an energy storage dielectric with a large ε r and excellent E b to meet the future requirements of high U e of film capacitors and to follow the direction of future development.…”

“…As science, economics, technology, and social growth advance, people gradually realize that the excessive consumption of nonrenewable energy will lead to atmospheric pollution and global warming problems. , Among many energy storage methods, film capacitors have extensive applications in hybrid and electric cars, medical defibrillators, inverters, and the production of green energy due to their quick charge and release rates, high energy density levels, and substantial cycle lives. − Due to their simple processing, remarkable plasticity, and suppleness, polymer-based dielectric materials have drawn a lot of interest. − Among them, commercially available BOPP (biaxially oriented polypropylene) film capacitors, which benefit from a high break strength and minimal dielectric loss, are representative of commercial capacitors, − but their low dielectric constant ( ε r ≈ 2.2) , limits their energy storage density U e to less than 5 J/cm 3 . It is, therefore, essential to develop an energy storage dielectric with a large ε r and excellent E b to meet the future requirements of high U e of film capacitors and to follow the direction of future development …”

“…26−28 Many studies have been devoted to enhancing intermolecular chain interactions and optimizing polymer microstructure through polymer blending strategies to enhance the energy storage performance of blended composite films effectively. 28−33 For example, Chi 29 energy-storing characteristics due to its linear polymer PMMA concentration of 50% by volume (U e ≈ 20.1 J/cm 3 and η ≈ 63.5% at a 570 kV/mm maximum electric field).…”

Enhanced high-temperature energy storage properties of polymer composites by interlayered metal nanodots

“…The Au nanodots with only a few nanometers when the sputtering time is 10 s, show the typical Coulomb-blockade effect and quantum connement effect. 32,50 Thus, the isolated Au nanodots sandwiched in the middle of PC can form the "Coulomb islands" inhibiting the transport of electrons (Fig. 7c).…”

Gold Sputtering at the Interfaces: An Easily Operated Strategy for Enhancing the Energy Storage Capability of Laminated Polymer Dielectrics

“…Dielectric capacitors have unique advantages over both electrochemical batteries and supercapacitors, including extremely high power density, ultrafast charge/discharge rates, and a wide range of operating voltages . Polymer dielectric materials are gaining increasing attention because of their light weight, flexibility, accessibility, and high breakdown strength. − However, most polymers exhibit low energy storage densities which greatly hinder their practical applications. In principle, the energy density ( U d ) of a dielectric material is determined by its electric displacement ( D ) and applied electric field ( E ), , as expressed by eq U normald = prefix∫ E normald D where D and E are proportional to the dielectric constant (ε r ) and breakdown strength ( E b ) of the material, respectively. − Clearly, to achieve higher U d , higher ε r and E b are desired.…”