High energy storage density and efficiency in aligned nanofiber filled nanocomposites with multilayer structure

被引：91

作者：

Feng, Mengjia ^{[1
,2
]}

Chi, Qingguo ^{[1
,2
]}

Feng, Yu ^{[1
,2
]}

Zhang, Yue ^{[1
,2
]}

Zhang, Tiandong ^{[1
,2
]}

Zhang, Changhai ^{[1
,2
]}

Chen, Qingguo ^{[1
,2
]}

Lei, Qingquan ^{[1
,2
]}

机构：

[1] Harbin Univ Sci & Technol, Key Lab Engn Dielect & Its Applicat, Minist Educ, Harbin 150080, Peoples R China

[2] Harbin Univ Sci & Technol, Sch Elect & Elect Engn, Harbin 150080, Peoples R China

来源：

COMPOSITES PART B-ENGINEERING | 2020年 / 198卷 / 198期

基金：

黑龙江省自然科学基金; 中国国家自然科学基金; 中国博士后科学基金;

关键词：

PVDF; Energy storage density; Charge-discharge efficiency; Multilayer dielectric; Electrospinning; POLY(VINYLIDENE FLUORIDE) COMPOSITES; POLYMER NANOCOMPOSITES; DIELECTRIC-PROPERTIES; BARIUM-TITANATE; CAPABILITY; NANOPARTICLES; FILMS; PERMITTIVITY; ARCHITECTURE; PERFORMANCE;

D O I：

10.1016/j.compositesb.2020.108206

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Large dielectric loss and low energy storage efficiency are common problems of poly(vinylidene fluoride) (PVDF) and its copolymers based energy storage dielectrics which has limited their applications. To solve these problems, linear dielectric polymethyl methacrylate (PMMA) with low intrinsic dielectric loss was chosen as the interlayers of P(VDF-TrFE-CFE) (PVTC) to form the multilayer structure dielectric. A small amount of silicon dioxide-coated Ba(0.6)Sr(0.4)TiO(3 )fibers (BST@SiO2) were incorporated into the PVTC layer to compensate the polarization decreasing due to the introduction of PMMA. The results showed that the optimized multilayer structure can significantly improve the energy storage efficiency and has a positive impact on enhancing both breakdown strength and permittivity. An enhanced and acceptable efficiency (85%) with a high energy density (10 J/cm(3)) were achieved in the 0.5 vol% 9-layer aligned BST@SiO2 PVTC/PMMA dielectric. This work can sever as a route to simultaneously obtain high energy storage density and efficiency in polymer based composites.

引用

页数：8

共 60 条

[1]

[Anonymous], 1961, R S PROGR DIELECTR

[2] Effect of biaxial orientation on dielectric and breakdown properties of poly(ethylene terephthalate)/poly(vinylidene fluoride-co-tetrafluoroethylene) multilayer films [J].