Effect of strain gradient and interface engineering on the high-temperature energy storage capacitors DOI
Guangliang Hu, Rui Lu, T. Hu

et al.

Applied Physics Letters, Journal Year: 2024, Volume and Issue: 125(13)

Published: Sept. 23, 2024

The miniaturization and high integration of electronic devices pose new requirements for the energy storage density high-temperature performance dielectric capacitors. For thin film materials, internal stress interface layer often show a significant impact on their performance. Therefore, capacitors with different gradient sequences periods were designed by BaHf0.17Ti0.83O3 (BHTO17), BaHf0.25Ti0.75O3 (BHTO25), BaHf0.32Ti0.68O3 (BHTO32) to investigate effect engineering characteristics. Dielectric structures upward gradient, downward periodic (4N) constructed. study found that structure had higher breakdown field strength than structure. This is because can effectively extend ending electric Ohmic conduction mechanism delay activation F–N tunneling mechanism. 4N slightly (reaching 9.22 MV/cm) compared pure also exhibited (115.44 J/cm3) wide temperature (−100 400 °C) These findings provide important guidance application value improving characteristics at temperatures through structural design.

Language: Английский

Enhanced breakdown strength and polarization behavior in relaxor ferroelectric films via bidirectional design of defect engineering and heterogeneous interface construction DOI
Shuo Zhang, Hua Hao, Rui Huang

et al.

Journal of Materials Chemistry C, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

Through bidirectional design of heterogeneous interface construction and defect engineering, a high W rec 83.6 J cm −3 efficiency 74.1% are achieved for the 2 mol% Fe-doped 0.8NBT–0.2BLT film.

Language: Английский

Citations

0
Poly(arylene ether nitrile) Based Dielectrics with High Energy Storage Properties: A Review DOI Creative Commons

Yongxian Liu,

Guangjun Liu, Yongxing Jiao

et al.

Nanomaterials, Journal Year: 2025, Volume and Issue: 15(9), P. 696 - 696

Published: May 5, 2025

Polymer-based nanocomposites have demonstrated significant strategic value in dielectric energy storage systems due to their tunable high density and rapid charge–discharge efficiency. Poly(arylene ether nitrile) (PEN), owing its superior thermal stability, mechanical strength, chemical corrosion resistance, outstanding properties, exhibits distinct advantages the field of high-performance devices. This review focuses on key strategies for enhancing performance PEN-based composites, emphasizing molecular engineering approaches, microstructural design, multiscale interface regulation mechanisms within composite systems, optimization constant (εr) breakdown strength (Eb) through stretching. Furthermore, potential polymer composites devices is highlighted, future research directions are proposed, including establishment a dynamic balance mechanism between dielectric/insulating properties development novel that offer both stability. These advancements will provide material foundation miniaturization intellectualization advanced pulse power equipment.

Language: Английский

Citations

0
Superior energy storage properties of BiFeO3 doped NaNbO3 antiferroelectric ceramics DOI
Bingsen Wang, Junjun Wang,

Yuxiao Du

et al.

Ceramics International, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 1, 2024

Language: Английский

Citations

3
Ultra-fine nano-crystalline optimize electrostatic energy storage DOI
Ying Zhang, Dongpo Song, Y. X. Han

et al.

Applied Physics Letters, Journal Year: 2024, Volume and Issue: 125(17)

Published: Oct. 21, 2024

Grain size pays a crucial role in the properties of ferroelectrics and dielectrics. Reducing grain is considered to be an effective mean for enhancing dielectric energy storage. In this work, high recovered storage density efficiency were achieved three-layered Aurivillius thin films by ultra-fine nano-crystalline engineering. The ultra-low remanent polarization can attributed emergence polar nano-regions due disruption macroscopic continuity ferroelectric domains nano-grains. At same time, all have breakdown strength presence extremely boundary density. Thus, 71 J/cm3 76% achieved, film capacitors show good fatigue endurance temperature stability. results suggest that engineering expand application traditional devices.

Language: Английский

Citations

2
Effect of strain gradient and interface engineering on the high-temperature energy storage capacitors DOI
Guangliang Hu, Rui Lu, T. Hu

et al.

Applied Physics Letters, Journal Year: 2024, Volume and Issue: 125(13)

Published: Sept. 23, 2024

The miniaturization and high integration of electronic devices pose new requirements for the energy storage density high-temperature performance dielectric capacitors. For thin film materials, internal stress interface layer often show a significant impact on their performance. Therefore, capacitors with different gradient sequences periods were designed by BaHf0.17Ti0.83O3 (BHTO17), BaHf0.25Ti0.75O3 (BHTO25), BaHf0.32Ti0.68O3 (BHTO32) to investigate effect engineering characteristics. Dielectric structures upward gradient, downward periodic (4N) constructed. study found that structure had higher breakdown field strength than structure. This is because can effectively extend ending electric Ohmic conduction mechanism delay activation F–N tunneling mechanism. 4N slightly (reaching 9.22 MV/cm) compared pure also exhibited (115.44 J/cm3) wide temperature (−100 400 °C) These findings provide important guidance application value improving characteristics at temperatures through structural design.

Language: Английский

Citations

0