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Researchers in the US have developed a prototype high-energy-density capacitor with potential applications across industries including automotive, healthcare and defence.
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Fabrication of ceramic capacitors requires technological breakthroughs to address growing concerns regarding sustainability, cost, and increased power consumption in the manufacturing process. Low temperature sintered xBiScO3-(1-x)BaTiO3 (BS-BT) with x = 0.4 is found to possess excellent energy storage performance and temperature stability. The grain size decreases from 3.5 μm sintered at 1100°C to less than 0.5 μm sintered at 800°C, leading to much improved breakdown field and energy storage properties. Recoverable energy density of 4.7 J/cm3 with a high efficiency of 89% was obtained at ...
High-temperature dielectric polymers are in constant demand for the multitude of high-power electronic devices employed in hybrid vehicles, grid-connected photovoltaic and wind power generation, to name a few. There is still a lack, however, of dielectric polymers that can work at high temperature (> 150 °C). Herein, a series of all-organic dielectric polymer composites have been fabricated by blending the n-type molecular semiconductor 1,4,5,8-naphthalenetetracarboxylic dianhydride (NTCDA) with polyetherimide (PEI). Electron traps are created by the introduction of trace amounts of n-type...