Ultrahigh-temperature film capacitors via homo/heterogeneous interfaces

Rui Lu, Zhonghui Shen, Chunrui Ma, Tingzhi Duan, Lu Lu, Guangliang Hu, Tian Yi Hu, Caiyin You, Shaobo Mi, Chun Lin Jia, Long Qing Chen, Ming Liu

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

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.

Original languageEnglish (US)
Pages (from-to)17166-17173
Number of pages8
JournalJournal of Materials Chemistry A
Volume10
Issue number33
DOIs
StatePublished - Aug 9 2022

All Science Journal Classification (ASJC) codes

  • General Chemistry
  • Renewable Energy, Sustainability and the Environment
  • General Materials Science

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