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To reach the full potential of polymer dielectrics in advanced electronics and electrified transportation, it calls for efficient operation of high‐energy‐density dielectric polymers under high voltages over a wide temperature range. Here, the polymer composites consisting of the boron nitride nanosheet/polyetherimide and TiO2 nanorod arrays/polyetherimide layers are reported. The layered composite...
Since the deficiency of petrol, electric vehicles have great potential in the future transportation. The paper discusses some batteries used in the electric vehicle. Since the unique characteristics, integral thin film capacitors become the research focus. The properties and categories of the materials in the capacitors are introduced, as well as the methods to improve the energy density.
In the last two years, the US Naval Research Laboratory has been able to synthesize barium strontium titanate (BST)-based glass-ceramics with dielectric breakdown strength as high as 800 kV/cm and dielectric constant up to 1200. Unfortunately, the energy density of the candidate glass-ceramics was only ~1 joule/cc when measured using a discharge measurement circuit. Polarization-electric field measurements...
Barium strontium titanate has been targeted as one potential ferroelectric glass-ceramic for high energy density dielectric materials. Previous testing has shown that the dielectric constant of these materials was as high as 1000 and dielectric breakdown strength up to 800 kV/cm. This did not, however, result in exceptional energy density (~ 0.90 J/cm3). In order to increase overall energy density...
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