Dielectric Properties and Energy Storage Densities of Poly(vinylidenefluoride) Nanocomposite with Surface Hydroxylated Cube Shaped Ba0.6Sr0.4TiO3 Nanoparticles

被引：53
作者：
Liu, Shaohui [1 ,2 ]
Xiu, Shaomei [1 ]
Shen, Bo [1 ]
Zhai, Jiwei [1 ]
Kong, Ling Bing [3 ]
机构：
[1] Tongji Univ, Sch Mat Sci & Engn, Funct Mat Res Lab, Key Lab Adv Civil Engn Mat,Minist Educ, 4800 Caoan Rd, Shanghai 201804, Peoples R China
[2] Henan Inst Engn, Sch Sci, Zhengzhou 451191, Peoples R China
[3] Nanyang Technol Univ, Sch Mat Sci & Engn, 50 Nanyang Ave, Singapore 639798, Singapore
来源：
POLYMERS | 2016年 / 8卷 / 02期
关键词：
dielectric properties; inorganic-organic nanocomposite; surface hydroxylation; energy storage density; FERROELECTRIC POLYMER NANOCOMPOSITES; BREAKDOWN STRENGTH; HIGH-PERMITTIVITY; FLEXIBLE FILMS; ASPECT-RATIO; CONSTANT; COMPOSITES;
D O I：
10.3390/polym8020045
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
Ceramic-polymer nanocomposites, consisting of surface hydroxylated cube-shaped Ba0.6Sr0.4TiO3 nanoparticles (BST-NPs) as fillers and poly(vinylidenefluoride) (PVDF) as matrix, have been fabricated by using a solution casting method. The nanocomposites exhibited increased dielectric constant and improved breakdown strength. Dielectric constants of the nanocomposite with surface hydroxylated BST-NPs (BST-NPs-OH) were higher as compared with those of their untreated BST-NPs composites. The sample with 40 vol % BST-NPs-OH had a dielectric constant of 36 (1 kHz). Different theoretical models have been employed to predict the dielectric constants of the nanocomposites, in order to compare with the experimental data. The BST-NPs-OH/PVDF composites also exhibited higher breakdown strength than their BST-NP/PVDF counterparts. A maximal energy density of 3.9 J/cm(3) was achieved in the composite with 5 vol % BST-NPs-OH. This hydroxylation strategy could be used as a reference to develop ceramic-polymer composite materials with enhanced dielectric properties and energy storage densities.
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页数：11
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