High dielectric constant and energy density achieved in sandwich-structured SrTiO3 nanocomposite thick films by interface modulation

2019 ◽  
Vol 7 (3) ◽  
pp. 673-681 ◽  
Author(s):  
Shengqiang Xiao ◽  
Wenbin Gao ◽  
Manwen Yao ◽  
Zhen Su ◽  
Xi Yao
Keyword(s):  
Dielectric Constant ◽  
Energy Density ◽  
Sandwich Structure ◽  
High Dielectric Constant ◽  
Thick Films ◽  
High Dielectric ◽  
Interface Modulation

The design of a sandwich structure is conducive to enhancing the dielectric constant and energy density of SrTiO3 nanocomposite thick films.

Enhanced performance of supercapacitors by constructing a “mini parallel-plate capacitor” in an electrode with high dielectric constant materials

2020 ◽  
Vol 8 (32) ◽  
pp. 16661-16668
Author(s):  
Huayao Tu ◽  
Shouzhi Wang ◽  
Hehe Jiang ◽  
Zhenyan Liang ◽  
Dong Shi ◽  
...  
Keyword(s):  
Dielectric Constant ◽  
Carbon Fiber ◽  
Parallel Plate ◽  
Sandwich Structure ◽  
High Dielectric Constant ◽  
Parallel Plate Capacitor ◽  
Plate Capacitor ◽  
Fiber Metal ◽  
High Dielectric ◽  
Mini Plate

The carbon fiber/metal oxide/metal oxynitride layer sandwich structure is constructed in the electrode to form a mini-plate capacitor. High dielectric constant metal oxides act as dielectric to increase their capacitance.

High-Dielectric-Constant All-Organic/Polymeric Composite Actuator Materials

2003 ◽  
Vol 785 ◽  
Author(s):  
Cheng Huang ◽  
Ji Su ◽  
Q.M. Zhang
Keyword(s):  
Dielectric Constant ◽  
Energy Density ◽  
Electric Fields ◽  
Elastic Energy ◽  
High Dielectric Constant ◽  
High Strain ◽  
Polymeric Materials ◽  
Field Type ◽  
Elastic Energy Density ◽  
High Dielectric

ABSTRACTAmong various electroactive polymer (EAP) actuator materials developed recently, the class of EAPs whose responses are stimulated by external electrical fields (often known as the field type EAPs) is especially attractive due to their high strain level and elastic energy density. However, for most field type EAPs, dielectric constant is low, generally less than 10. Consequently, these polymers usually require high electric fields (>100 V/μm) to generate high elastic energy density which limits their applications. In this paper, we will investigate some avenues to significantly raise the dielectric constant and electromechanical response in field type polymeric materials. By exploiting an all-organic composite approach in which high-dielectric-constant organic particulates were blended with a polymer matrix, a polymeric-like material can reach a dielectric constant higher than 400, which results in a significant reduction of the applied field to generate high strain with high elastic energy density. An all-polymer high-dielectric-constant (K>1,000 @1 kHz) percolative composite material was fabricated by the combination of conductive polyaniline particles (K>105) within a fluoroterpolymer matrix (K>50). These high-K polymer hybrid materials also exhibit high electromechanical responses under low applied fields. In addition, a three-component all-organic composite was designed and prepared to improve the dielectric constant and the electromechanical response, as well as the stability of the composites, in which a high-dielectric-constant organic dielectric phase and an organic conductive phase were embedded into the soft dielectric elastomer matrix.

Dielectric properties characterization of high dielectric constant thick films

2010 ◽  
Vol 52 (10) ◽  
pp. 2339-2344 ◽  
Author(s):  
Luciene S. Demenicis ◽  
José Ignacio Marulanda ◽  
Rodolfo A. A. Lima ◽  
Maria Cristina R. Carvalho
Keyword(s):  
Dielectric Constant ◽  
Dielectric Properties ◽  
High Dielectric Constant ◽  
Thick Films ◽  
High Dielectric ◽  
Properties Characterization

Composite screen-printed thick films for high dielectric constant devices: Bi4Ti3O12–CaCu3Ti4O12 films

2007 ◽  
Vol 28 (6) ◽  
pp. 771-777 ◽  
Author(s):  
K.D.A. Sabóia ◽  
P.B.A. Fechine ◽  
M.R.P. Santos ◽  
F.N.A. Freire ◽  
F.M.M. Pereira ◽  
...  
Keyword(s):  
Dielectric Constant ◽  
High Dielectric Constant ◽  
Thick Films ◽  
High Dielectric ◽  
Screen Printed

scholarly journals Polymer Nanocomposites with High Energy Density Utilizing Oriented Nanosheets and High-Dielectric-Constant Nanoparticles

Materials ◽  
2021 ◽  
Vol 14 (17) ◽  
pp. 4780
Author(s):  
Yushu Li ◽  
Yao Zhou ◽  
Sang Cheng ◽  
Jun Hu ◽  
Jinliang He ◽  
...  
Keyword(s):  
Dielectric Constant ◽  
Energy Density ◽  
Polymer Nanocomposites ◽  
High Dielectric Constant ◽  
Vinylidene Fluoride ◽  
Dielectric Materials ◽  
High Energy ◽  
High Energy Density ◽  
Capacitive Energy Storage ◽  
High Dielectric

The development of high-energy-density electrostatic capacitors is critical to addressing the growing electricity need. Currently, the widely studied dielectric materials are polymer nanocomposites incorporated with high-dielectric-constant nanoparticles. However, the introduction of high-dielectric-constant nanoparticles can cause local electric field distortion and high leakage current, which limits the improvement in energy density. In this work, on the basis of conventional polymer nanocomposites containing high-dielectric-constant nanoparticles, oriented boron nitride nanosheets (BNNSs) are introduced as an extra filler phase. By changing the volume ratios of barium titanate (BT) and BNNSs, the dielectric property of polymer nanocomposites is adjusted, and thus the capacitive energy storage performance is optimized. Experimental results prove that the oriented BNNSs can suppress the propagation of charge carriers and decrease the conduction loss. Using poly(vinylidene fluoride-co-hexafluoropropylene) (P(VDF-HFP)) as the polymer matrix, the P(VDF-HFP)/BNNS/BT nanocomposite has a higher discharged energy density compared with the conventional nanocomposite with the freely dispersed BT nanoparticles.

Flexible BaTiO3nf-Ag/PVDF nanocomposite films with high dielectric constant and energy density

2017 ◽  
Vol 24 (2) ◽  
pp. 757-763 ◽  
Author(s):  
Hongchang Liu ◽  
Suibin Luo ◽  
Shuhui Yu ◽  
Shanjun Ding ◽  
Yanbin Shen ◽  
...  
Keyword(s):  
Dielectric Constant ◽  
Energy Density ◽  
High Dielectric Constant ◽  
Nanocomposite Films ◽  
High Dielectric

High-performance dielectric ionic ladderphane-derived triblock copolymer with a unique self-assembled nanostructure

RSC Advances ◽  
2016 ◽  
Vol 6 (91) ◽  
pp. 88874-88885 ◽  
Author(s):  
Jie Chen ◽  
Dandan Zhou ◽  
Cuifang Wang ◽  
Xiaojuan Liao ◽  
Meiran Xie ◽  
...  
Keyword(s):  
Dielectric Constant ◽  
Dielectric Loss ◽  
Energy Density ◽  
Hysteresis Loop ◽  
Triblock Copolymer ◽  
High Performance ◽  
High Dielectric Constant ◽  
Low Dielectric ◽  
Good Energy ◽  
High Dielectric

Ionic poly(bisnorbornene)-based ladderphane can self-assemble into a tree ring-like nanostructure, and exhibits a high dielectric constant, low dielectric loss, narrow hysteresis loop, and good energy density.

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