التفاصيل البيبلوغرافية
| العنوان: |
High-temperature dielectric with excellent capacitive performance enabled by rationally designed traps in blends. |
| المؤلفون: |
Zhao, Zhonghua, Zhang, Shuo, Li, Mingru, Feng, Yang, Yang, Liuqing, Li, Shengtao |
| المصدر: |
Journal of Applied Physics; 5/21/2024, Vol. 135 Issue 19, p1-10, 10p |
| مصطلحات موضوعية: |
DIELECTRICS, ENERGY density, POLYETHYLENEIMINE, STRAY currents, HIGH temperatures, ELECTRONIC systems, CONJUGATED polymers, ENERGY storage |
| مستخلص: |
Polymer dielectrics with excellent capacitive performance are urgently needed in advanced electrical and electronic systems. However, due to the dramatic increase in the conduction loss, the energy density and efficiency of polymers degrade severely at elevated temperatures, limiting their application in harsh environments up to 150 °C. Herein, an all-organic polyurea (PU)/polyetherimide (PEI) blend film is designed to prepare high-temperature polymer dielectric. It is found that carrier traps can be introduced by blending, and the hydrogen bond between PU and PEI increases the trap depth, leading to suppressed leakage current and enhanced breakdown strength, thus improving the energy storage performance. PU/30%PEI exhibits a high discharged energy density of ∼3.74 J/cm3 with an efficiency higher than 90% at 150 °C, which is 78% and 70% higher than pristine PU and PEI, respectively. This work provides a facile strategy to improve the energy storage performance of polymer dielectrics by introducing deep traps through blending. [ABSTRACT FROM AUTHOR] |
|
Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) |
| قاعدة البيانات: |
Complementary Index |
Find this article in full text from Scitation.