Significantly improved breakdown strength and energy density of tri-layered polymer nanocomposites with optimized graphene oxide

Chen，Jie1; Li，Yi1; Wang，Yifei1; Dong，Jiufeng1,2; Xu，Xinwei1,2; Yuan，Qibin1; Niu，Yujuan2,3; Wang，Qing4; Wang，Hong1,2

2020-01-20

10.1016/j.compscitech.2019.107912

COMPOSITES SCIENCE AND TECHNOLOGY   影响因子和分区

0266-3538

1879-1050

Advanced electrostatic capacitors with great energy densities are urgently needed for practical applications in high-performance energy storage devices. Herein, poly (methyl methacrylate) (PMMA) is employed as two outer layers to provide excellent insulation characteristic, while ferroelectric copolymer poly (vinylidene fluoride-co-hexafluoropropene) P(VDF-HFP) with dispersed graphene oxide (GO) as the inter layer to enhance dielectric constant (K) and electrical displacement (D). The resulting trilayered nanocomposites exhibit highest electrical displacement difference (D-D) value of 7.17 μC cm at a low filler loading of 2 wt% GO under an electrical field of 300 MV m. The breakdown strength (E) of the designed trilayered nanocomposites are prominently improved at least one order of magnitude in comparison to other configuration films such as single-layered and reversed trilayer structures, as verified by the leakage current measurements and the finite element simulations with 3D models. The trilayered nanocomposites deliver an ultrahigh energy density of 10 J cm and a discharged efficiency of 77% at an applied electrical field of 300 MV m, which is among the best energy storage performance under the identical electric field reported so far. The potential applications of the trilayered nanocomposites for energy storage have been further demonstrated by stable performance over a 40,000 charge-discharge cycling.

Dielectric breakdown Electrical energy storage Ferroelectric polymers Power density Trilayered structure

EI ; SCI

英语

通讯

National Basic Research Program of China (973 Program)[2015CB654603] ; National Natural Science Foundation of China[61631166004]

Materials Science

Materials Science, Composites

WOS:000509630000014

Elsevier Ltd

20194807737972

Electric breakdown ; Electrostatic devices ; Energy storage ; Esters ; Ferroelectricity ; Fluorine compounds ; Graphene ; Leakage currents ; Nanocomposite films ; Polymers

Energy Storage:525.7 ; Electricity: Basic Concepts and Phenomena:701.1 ; Semiconducting Materials:712.1 ; Nanotechnology:761 ; Chemical Products Generally:804 ; Organic Compounds:804.1 ; Polymeric Materials:815.1 ; Solid State Physics:933

MATERIALS SCIENCE

2-s2.0-85075355612

Scopus

1.School of Electronic and Information Engineering & State Key Laboratory for Mechanical Behavior of Materials,Xi'an Jiaotong University,Xi'an,710049,China
2.Department of Materials Science and Engineering & Shenzhen Engineering Research Center for Novel Electronic Information Materials and Devices,Southern University of Science and Technology,Shenzhen,518055,China
3.SUSTech Academy for Advanced Interdisciplinary Studies,Southern University of Science and Technology,Shenzhen,518055,China
4.Department of Materials Science and Engineering,The Pennsylvania State University,University Park,PA,16802,United States

Chen，Jie,Li，Yi,Wang，Yifei,et al. Significantly improved breakdown strength and energy density of tri-layered polymer nanocomposites with optimized graphene oxide[J]. COMPOSITES SCIENCE AND TECHNOLOGY,2020,186.

Chen，Jie.,Li，Yi.,Wang，Yifei.,Dong，Jiufeng.,Xu，Xinwei.,...&Wang，Hong.(2020).Significantly improved breakdown strength and energy density of tri-layered polymer nanocomposites with optimized graphene oxide.COMPOSITES SCIENCE AND TECHNOLOGY,186.

Chen，Jie,et al."Significantly improved breakdown strength and energy density of tri-layered polymer nanocomposites with optimized graphene oxide".COMPOSITES SCIENCE AND TECHNOLOGY 186(2020).