Ultrahigh-temperature film capacitors via homo/heterogeneous interfaces,Journal of Materials Chemistry A

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Ultrahigh-temperature film capacitors via homo/heterogeneous interfaces
Journal of Materials Chemistry A ( IF 10.7 ) Pub Date : 2022-08-09 , DOI: 10.1039/d2ta04710a
Rui Lu _{1,

2} , Zhonghui Shen _{3,

4} , Chunrui Ma ₂ , Tingzhi Duan _{1,

2} , Lu Lu _{1,

2} , Guangliang Hu _{1,

2} , Tian-Yi Hu ₂ , Caiyin You ₅ , Shaobo Mi ₂ , Chun-Lin Jia _{1,

2} , Long-Qing Chen ₆ , Ming Liu _{1,

2}

Affiliation

High-performance dielectric capacitors are in high demand for advanced electronics and electric power systems. However, their relatively low operating temperature limits their widespread applications. Here, guided by phase-field simulations, a capacitor is reported to operate at a record high operating temperature of 400 °C with an energy storage density of 55.4 joules per cubic centimeter, energy efficiency of over 82%, and superior thermal stability and fatigue properties. These ultrahigh-temperature performances are achieved through a relatively simple method of introduction and engineering of homogeneous/heterogeneous interfaces within capacitors, which greatly improve their high-temperature stability, relaxation behavior, and breakdown strength. In our work, we not only successfully fabricate capacitors with potential applications in high-temperature electric power systems and electronic technologies but also open up a promising and general route for designing high-performance electrostatic capacitors through homogeneous/heterogeneous interfaces.

中文翻译：

通过同质/异质界面的超高温薄膜电容器

先进的电子和电力系统对高性能介电电容器的需求量很大。然而，它们相对较低的工作温度限制了它们的广泛应用。在这里，在相场模拟的指导下，据报道，电容器在创纪录的 400 °C 工作温度下工作，能量存储密度为 55.4 焦耳每立方厘米，能量效率超过 82%，并且具有出色的热稳定性和抗疲劳性特性。这些超高温性能是通过一种相对简单的方法在电容器内引入和设计均质/异质界面来实现的，这极大地提高了它们的高温稳定性、弛豫行为和击穿强度。在我们的工作中，

更新日期：2022-08-09

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