High performance capacitors via aligned TiO2 nanowire array

被引：26
作者：
Dou, Zhang [1 ]
Liu, Weiwei [1 ]
Lin, Tang [1 ]
Zhou, Kechao [1 ]
Hang, Luo [1 ,2 ]
机构：
[1] Cent S Univ, State Key Lab Powder Met, Changsha 410083, Peoples R China
[2] Cent S Univ, Coll Chem & Chem Engn, Changsha 410083, Peoples R China
来源：
APPLIED PHYSICS LETTERS | 2017年 / 110卷 / 13期
基金：
中国国家自然科学基金;
关键词：
ENERGY-STORAGE DENSITY; POLY(VINYLIDENE FLUORIDE) NANOCOMPOSITES; ENHANCED DIELECTRIC-CONSTANT; POLYMER NANOCOMPOSITES; THERMAL-CONDUCTIVITY; BATIO3; NANOWIRES; ASPECT-RATIO; COMPOSITES; NANOFIBERS; STRENGTH;
D O I：
10.1063/1.4979407
中图分类号：
O59 [应用物理学];
学科分类号：
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/cm(3), respectively. The findings provide a route to increase the energy density of polymer capacitors. Published by AIP Publishing.
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页数：5
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