期刊
JOURNAL OF ALLOYS AND COMPOUNDS
卷 726, 期 -, 页码 587-592出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2017.07.341
关键词
Dielectric properties; Inorganic-organic nanocomposite; PVP modification; Energy storage density
资金
- Programs for Science and Technology Development, Henan Province, China [142300410438, 142300410439]
- Programs for Tackling Key Problems in Science and Technology, Henan Province, China [172102210103, 172102210206]
- Ministry of Sciences and Technology of China through 973-project [2015CB654601]
- China Postdoctoral Science Foundation [2017M611614]
- Doctoral Program of Henan Insititute of Engineering [D2016015, D2016016]
- National-level College Students Innovative Entrepreneurial Training Plan Program [201611517040]
Homogeneous nanocomposites flexible films is fabricated by incorporating surface modified paraelectric SrTiO3 nanoparticles (ST NP) by polyvinylpyrrolidone (PVP) into a polyvinylidene fluoride (PVDF) matrix. A systematic study was investigated on the effect of surface modified ST NP fillers on the dielectric properties and energy storage density of the nanocomposite films. Compared to pure PVDF, nanocomposite films with 5 vol % surface modified ST NP show a maximal energy density of 5.1 J/cm(3), which is 182% higher than that of the pure PVDF. Moreover, the nanocomposites films exhibits a high efficiency of 80.7% at electric fields below 1000 kV/cm and still higher than 64.6% at an electric field of 2700 kV/cm. The results demonstrate that the nanocomposites films using the surface modified paraelectric fillers exhibit high energy storage densities and high efficiency. (C) 2017 Elsevier B.V. All rights reserved.
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