Ultrahigh-temperature film capacitors via homo/heterogeneous interfaces

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 operat...

Full description

Saved in:
Bibliographic Details
Published in:Journal of materials chemistry. A, Materials for energy and sustainability Materials for energy and sustainability, 2022-08, Vol.10 (33), p.17166-17173
Main Authors: Lu, Rui, Shen, Zhonghui, Ma, Chunrui, Duan, Tingzhi, Lu, Lu, Hu, Guangliang, Hu, Tian-Yi, You, Caiyin, Mi, Shaobo, Jia, Chun-Lin, Chen, Long-Qing, Liu, Ming
Format: Article
Language:English
Subjects:
Capacitors
Electric power
Electric power systems
Energy efficiency
Energy storage
High temperature
Interface stability
Interfaces
Materials fatigue
Operating temperature
Thermal stability
Ultrahigh temperature
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary: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.
ISSN:2050-7488
2050-7496
DOI:10.1039/D2TA04710A