Journal ArticleDOI
Fabrication of core-shell structured Ni@BaTiO3 scaffolds for polymer composites with ultrahigh dielectric constant and low loss
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TLDR
In this paper, a novel design of dielectric composites consisting of core-shell structured porous Ni@BaTiO3 scaffolds infiltrated with epoxy was developed, and it was demonstrated that the dielectrics of the composites could be as high as 6397@10 kHz, which is approximately 1777 times higher than pure epoxy matrix (er.Abstract:
Dielectric composites have drawn increasing attention owing to their wide applications in electrical systems. Herein, a novel design of dielectric composites consisting of core-shell structured porous Ni@BaTiO3 scaffolds infiltrated with epoxy was developed. It is demonstrated that the dielectric constants of the composites could be as high as 6397@10 kHz, which is approximately 1777 times higher than pure epoxy matrix (er ≈ 3.6@10 kHz). Meanwhile, the dielectric loss (tanδ ≈ 0.04@10 kHz) remains comparable to that of pure epoxy (tanδ ≈ 0.01@10 kHz). It is believed that the strong charge accumulation and interfacial polarizations on the huge interfaces, especially the Ni/BaTiO3 and Ni/epoxy interfaces, give arise to the substantially enhanced er. Besides, the sintered insulating BaTiO3 coating can block the transportation of charge carriers, resulting in the low loss. The ultrahigh dielectric constants and low loss make these composites promising candidates for microstrip antennas, field-effect transistors and dielectric capacitors.read more
Citations
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Journal ArticleDOI
Tunneling-induced negative permittivity in Ni/MnO nanocomposites by a bio-gel derived strategy
Peitao Xie,Yifan Li,Qing Hou,Kunyan Sui,Chunzhao Liu,Xueyan Fu,Jiaoxia Zhang,Vignesh Murugadoss,Vignesh Murugadoss,Jincheng Fan,Yanpeng Wang,Runhua Fan,Zhanhu Guo +12 more
TL;DR: In this article, zero-dimensional nanoparticles connected by tunneling networks were used to construct metamaterials, thus providing a more flexible alternative for designing the geometrical configuration of metammaterials, particularly in nanodevices.
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Ultrahigh discharge efficiency and improved energy density in rationally designed bilayer polyetherimide–BaTiO3/P(VDF-HFP) composites
TL;DR: In this article, a bilayer composite consisting of a pure polyetherimide layer and a BaTiO3/P(VDF-HFP) composite layer was designed to achieve ultrahigh discharge efficiencies under external electric fields up to 400 kV mm−1.
Journal ArticleDOI
Flexible silver nanowire/carbon fiber felt metacomposites with weakly negative permittivity behavior.
Kai Sun,Linying Wang,Zongxiang Wang,Xinfeng Wu,Guohua Fan,Zhongyang Wang,Zhongyang Wang,Chuanbing Cheng,Runhua Fan,Mengyao Dong,Mengyao Dong,Zhanhu Guo +11 more
TL;DR: The proposed design strategy for AgNW/CFF composites with tunable negative permittivity opens up a new approach to flexible metacomposites.
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Achieving excellent dielectric performance in polymer composites with ultralow filler loadings via constructing hollow-structured filler frameworks
Jie Yang,Xiaotong Zhu,Huanlei Wang,Xin Wang,Chuncheng Hao,Runhua Fan,Davoud Dastan,Zhicheng Shi +7 more
TL;DR: In this paper, the hollow-structured BaTiO3 frameworks with hierarchical interfaces in epoxy composites were constructed to improve the dielectric energy-storage performance of the composite.
Journal ArticleDOI
Ion implantation of copper oxide thin films; statistical and experimental results
Azadeh Jafari,Khashayar Tahani,Davoud Dastan,Sima Asgary,Zhicheng Shi,Xi-Tao Yin,Wen-Dong Zhou,Hamid Garmestani,Ştefan Ţălu +8 more
TL;DR: In this article, the influence of nitrogen ion implantation on the properties of copper oxide thin films, prepared using DC magnetron sputtering, was investigated by means of X-ray diffraction (XRD), atomic force microscopy (AFM), scanning electron microscopy, and UV-visible spectrophotometer.
References
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Journal ArticleDOI
Fundamentals, processes and applications of high-permittivity polymer–matrix composites
Zhi-Min Dang,Zhi-Min Dang,Zhi-Min Dang,Jinkai Yuan,Jun-Wei Zha,Tao Zhou,Shengtao Li,Guo-Hua Hu,Guo-Hua Hu +8 more
TL;DR: In this paper, the authors focus on the important role and challenges of high-k polymer-matrix composites (PMC) in new technologies and discuss potential applications of highk PMC.
Journal ArticleDOI
Physical Properties of Composites Near Percolation
Ce-Wen Nan,Yang Shen,Jing Ma +2 more
TL;DR: In this article, the effects of geometric factors and intrinsic properties of the fillers and the matrix on electric and dielectric properties near percolation have been discussed, and an outlook on the future possibilities and scientific challenges in the field is given.
Journal ArticleDOI
Ultrahigh Energy Density of Polymer Nanocomposites Containing BaTiO3@TiO2 Nanofibers by Atomic‐Scale Interface Engineering
TL;DR: Atomic-scale interface engineering in BaTiO3@TO2 nanofibers leads to concurrent enhancement of electric displacement and breakdown strength in poly(vinylidene fluoride) (PVDF)-based nanocomposites.
Journal ArticleDOI
New Percolative BaTiO3–Ni Composites with a High and Frequency-Independent Dielectric Constant (εr ≈ 80000)
Carlos Pecharromán,Fátima Esteban-Betegón,José F. Bartolomé,Sonia López-Esteban,José S. Moya +4 more
Journal ArticleDOI
Excellent energy storage performance and thermal property of polymer-based composite induced by multifunctional one-dimensional nanofibers oriented in-plane direction
Yue Zhang,Changhai Zhang,Yu Feng,Tiandong Zhang,Qingguo Chen,Chi Qingguo,Chi Qingguo,Lizhu Liu,Guofeng Li,Yang Cui,Xuan Wang,Zhi-Min Dang,Qingquan Lei +12 more
TL;DR: In this paper, an artificial nano-composite with excellent comprehensive performance by controlling the orientation of one-dimensional (1D) 0.5Ba(Zr0.7Ca0.2Ti0.3)TiO3 nanofibers (BZCT NFs) and adjusting the interaction between BZCTNFs and poly(vinylidene fluoride) (PVDF) matrix via SiO2 buffer layer was proposed.
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