Tuning the MOF-derived Fe fillers and crystal structure of PVDF composites for enhancement of their energy storage density

被引:10
|
作者
Zhu, Tongguang [1 ,2 ]
Zhao, Hang [1 ,2 ]
Zhang, Na [1 ,2 ]
Zhang, Chuying [1 ,2 ]
Bai, Jinbo [3 ]
机构
[1] Northwest Univ, Int Collaborat Ctr Photoelect Technol & Nano Funct, Xian 710069, Peoples R China
[2] Northwest Univ, Inst Photon & Photon Technol, Xian 710069, Peoples R China
[3] Univ Paris Saclay, Cent Supelec, CNRS, ENS Paris Saclay,LMPS, F-91190 Gif Sur Yvette, France
基金
中国国家自然科学基金;
关键词
Polymer -matrix composites (PMCs); Dielectricity; Electrical properties; Finite element analysis (FEA); POLYMER NANOCOMPOSITE DIELECTRICS; ELECTRICAL-RESISTIVITY; BREAKDOWN STRENGTH; PERFORMANCE; SUPERCAPACITORS; NANOPARTICLES; PERMITTIVITY; POROSITY; FILMS;
D O I
10.1016/j.cej.2024.149204
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Polymer-based capacitors are essential energy storage components in the electronic and electrical industries, which is benefit for their high power density and fast charge-discharge capabilities. However, the low energy density of polymer-based capacitors limits their miniaturization and intelligent applications. In this study, we present the novel poly(vinylidene fluoride) (PVDF)-based composites with exceptional energy storage performance at the submicron metal filler loadings. Guided by synergistically improving the dielectric constant and breakdown strength of polymer-based composites, metal-organic framework (MOF)-derived Fe fillers and Press & Heat (P&H) cycles are mainly implemented. The polymer-based composites exhibit a superior dielectric constant of 15.3, while simultaneously maintain a high breakdown strength of 617.1 MV/m. The excellent energy density of 28.9 J/cm3 is obtained at the ultralow filler loading of 0.2 wt%. Synergistic tuning the loading content of MOF-derived Fe and optimizing the P&H cycles not only leads to a novel composite dielectrics with outstanding energy storage properties, but also presents a new strategy for exploring high-performance capacitive polymer composites.
引用
收藏
页数:9
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