聚偏氟乙烯
纳米线
电容器
材料科学
光电子学
能量密度
电场
纳米技术
聚合物
储能
超级电容器
电压
电容
复合材料
工程物理
电极
电气工程
化学
功率(物理)
物理化学
工程类
物理
量子力学
作者
Dou Zhang,Weiwei Liu,Lin Tang,Kechao Zhou,Hang Luo
摘要
Capacitors generally suffer from low energy density, which seriously limits their applications in energy storage devices. In this letter, TiO2 nanowire arrays were synthesized by a hydrothermal method and the morphologies were tuned by modulating the concentration of the Ti source. High energy density was realized after incorporating TiO2 nanowire arrays into a polyvinylidene fluoride matrix. The alignment of TiO2 nanowires with the direction of the applied electric field played an important role in achieving high breakdown strength and energy density, i.e., 380 kV/mm and 23.21 J/cm3, respectively. The findings provide a route to increase the energy density of polymer capacitors.
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