聚偏氟乙烯
电介质
电容器
纳米复合材料
材料科学
纳米颗粒
高-κ电介质
储能
薄膜电容器
复合材料
纳米技术
化学工程
光电子学
电压
物理
电气工程
聚合物
工程类
量子力学
功率(物理)
作者
Zhihui Yi,Zhuo Wang,Dan Wu,Ying Xue
出处
期刊:ACS applied energy materials
[American Chemical Society]
日期:2022-11-07
卷期号:5 (11): 14559-14569
被引量:1
标识
DOI:10.1021/acsaem.2c03293
摘要
Electrostatic capacitors have high power density, but how to improve the energy storage density of electrostatic capacitors has always been the key to solving energy problems in the background of the energy crisis. Designing multi-layer core–shell inorganic nanofillers is an effective way to break the contradiction between high dielectric constant and high breakdown strength in nanocomposites to improve the energy storage performance. Herein, polyvinylidene fluoride (PVDF)-based nanocomposites are proposed, which are filled with multi-layer core–shell structured inorganic BaTiO3@BaxSr1–xTiO3@DA nanoparticles (BT@BST@DA NPs). In the optimized 2 wt % PVDF/BaTiO3@BaxSr1–xTiO3@DA nanoparticle (PVDF/BT@BST@DA NPs) nanocomposite material, a high discharge energy density of 13.75 J/cm3 (370 MV/m) can be obtained, as well as excellent discharge efficiency. The dielectric performance and energy storage density of 2 wt % PVDF/BT@BST@DA NPs are proven to be better than 2 wt % PVDF/BaTiO3@DA nanoparticles (PVDF/BT@DA NPs). This work provides a strategy for the development of dielectrics for electrostatic capacitors with high energy storage density.
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