Enhanced energy storage performance in a PVDF/PMMA/TiO2 blending nanodielectric material

被引：38

作者：

Liu, Yongbin ^{[1
]}

Gao, Jinghui ^{[1
]}

Yao, Ruifeng ^{[1
]}

Zhang, Yang ^{[1
]}

Zhao, Tongxin ^{[1
]}

Tang, Chao ^{[1
]}

Zhong, Lisheng ^{[1
]}

机构：

[1] Xi An Jiao Tong Univ, State Key Lab Elect Insulat & Power Equipment, Xian, Shaanxi, Peoples R China

来源：

MATERIALS CHEMISTRY AND PHYSICS | 2020年 / 250卷

关键词：

Capacitive energy storage; Ferroelectric polymers; Nanocomposite; Blending; POLY(VINYLIDENE FLUORIDE); POLYMER NANOCOMPOSITES; DIELECTRIC-PROPERTIES; BREAKDOWN STRENGTH; COMPOSITE FILMS; DENSITY;

D O I：

10.1016/j.matchemphys.2020.123155

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The growing demand for miniaturization of electrical and electronic system poses a great challenge on energy storage capacitors, which requires associated dielectric materials exhibiting high energy density. In ferroelectric polymer dielectrics, it is one of the key issues to achieve both high dielectric permittivity and high breakdown strength. In this paper, we propose a method on improving the dielectric permittivity and breakdown strength concurrently taking the advantage of nanocomposite and blending. Our results show that PVDF/PMMA/TiO2 blending nanodielectric material presents improved relative dielectric permittivity of 12 and breakdown strength of 387 kV/mm compared with pristine PVDF, leading to an enhanced energy density about 5.8 J/cm(3) and an efficiency of 77%. Further electric properties measurements and structure characterizations indicate that the moderate enhancement of permittivity can be ascribed to the doping of TiO2 nanoparticles, and the improved breakdown strength is caused by blending of PMMA with good insulating properties. Our results might provide a promising approach to develop high-performance energy-storage dielectric materials concerning the synergistic effect of blending and nanocomposite.

引用

页数：6

共 45 条

[1] A critical analysis of the α, β and γ phases in poly(vinylidene fluoride) using FTIR [J].