Meta-aromatic polyurea with high dipole moment and dipole density for energy storage capacitors

被引：65
|
作者：
Wu, Shan [1 ]
Lin, Minren [2 ]
Burlingame, Quinn [1 ]
Zhang, Q. M. [1 ,2 ]
机构：
[1] Penn State Univ, Dept Elect Engn, University Pk, PA 16802 USA
[2] Penn State Univ, Mat Res Inst, University Pk, PA 16802 USA
来源：
APPLIED PHYSICS LETTERS | 2014年 / 104卷 / 07期
关键词：
DIELECTRICS; CERAMICS; BEHAVIOR; FUTURE;
D O I：
10.1063/1.4865931
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
A dielectric polymer, i.e., meta-aromatic polyurea(meta-PU) was developed and investigated for high energy density, low loss energy storage capacitors. Modifications to the molecular structure can tune the dipolar density and dipole moment in the polyurea systems to improve the dielectric properties. Meta-PU was synthesized via a green synthetic route with a higher volume dipolar density than the aromatic polyurea previously reported. The meta-PU has an enhanced dielectric constant, higher energy density, and a high electrical breakdown. A high storage electrical energy density of 13 J/cm(3) and energy storage efficiency of 91% can be achieved at 670 MV/electric field. (C) 2014 AIP Publishing LLC.
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页数：4
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