复合材料
材料科学
储能
晶体结构
能量密度
Crystal(编程语言)
填料(材料)
化学
结晶学
工程物理
计算机科学
物理
功率(物理)
量子力学
程序设计语言
作者
Tongguang Zhu,Hang Zhao,Na Zhang,Chuying Zhang,Jinbo Bai
标识
DOI:10.1016/j.cej.2024.149204
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.
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