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Optimizing high-temperature energy storage in tungsten bronze-structured ceramics via high-entropy strategy and bandgap engineering

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July 12, 2024
Published Date

Research Abstract & Technology Focus

AbstractAs a vital material utilized in energy storage capacitors, dielectric ceramics have widespread applications in high-power pulse devices. However, the development of dielectric ceramics with both high energy density and efficiency at high temperatures poses a significant challenge. In this study, we employ high-entropy strategy and band gap engineering to enhance the energy storage performance in tetragonal tungsten bronze-structured dielectric ceramics. The high-entropy strategy fosters cation disorder and disrupts long-range ordering, consequently regulating relaxation behavior. Simultaneously, the reduction in grain size, elevation of conductivity activation energy, and increase in band gap collectively bolster the breakdown electric strength. This cascade effect results in outstanding energy storage performance, ultimately achieving a recoverable energy density of 8.9 J cm−3 and an efficiency of 93% in Ba0.4Sr0.3Ca0.3Nb1.7Ta0.3O6 ceramics, which also exhibit superior temperature stability across a broad temperature range up to 180 °C and excellent cycling reliability up to 105. This research presents an effective method for designing tetragonal tungsten bronze dielectric ceramics with ultra-high comprehensive energy storage performance.
optimizing high-temperature energy storage tungsten bronze-structured
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This literature focuses on: AbstractAs a vital material utilized in energy storage capacitors, dielectric ceramics have widespread applications in high-power pulse devices. However, the development of dielectric ceramics with both high energy density and efficiency at high t...

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Yes, highly correlated activity was mapped. An entry titled 'Optimizing high-temperature energy storage in tungsten bronze-structured ceramics via high-entropy strategy and bandgap engineering' discusses this: AbstractAs a vital material utilized in energy storage capacitors, dielectric ceramics have widespread applications in high-power pulse devices. Ho...

Are there commercial applications of 'Optimizing high-temperature energy storage in tungsten bronze-structured ceramics via high-entropy strategy and bandgap engineering' in market news publications?

Yes, highly correlated activity was mapped. An entry titled 'Assessing the effect of composition on the structural, mechanical and thermal stability of high entropy ceramic (TiNbHfTaW)C: density functional theory study' discusses this: Scientific Reports - Assessing the effect of composition on the structural, mechanical and thermal stability of high entropy ceramic (TiNbHfTaW)C: ...

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