Dipole-relaxation dynamics in a modified polythiourea with high dielectric constant for energy storage applications

2019 ◽  
Vol 115 (16) ◽  
pp. 163901 ◽  
Author(s):  
Chao Wu ◽  
Zongze Li ◽  
Gregory M. Treich ◽  
Mattewos Tefferi ◽  
Riccardo Casalini ◽  
...  
Keyword(s):  
Dielectric Constant ◽  
Energy Storage ◽  
High Dielectric Constant ◽  
Relaxation Dynamics ◽  
Dipole Relaxation ◽  
Energy Storage Applications ◽  
High Dielectric

scholarly journals Polymer Composites with Improved Dielectric Properties: A Review

2021 ◽  
Vol 66 (2) ◽  
pp. 166
Author(s):  
B. Ghule ◽  
M. Laad
Keyword(s):  
Dielectric Constant ◽  
Energy Storage ◽  
Dielectric Properties ◽  
Polymer Composites ◽  
High Dielectric Constant ◽  
Dielectric Materials ◽  
Filler Material ◽  
Filler Materials ◽  
K Value ◽  
High Dielectric

Materials exhibiting high dielectric constant (k) values find applications in capacitors, gate dielectrics, dielectric elastomers, energy storage device, while materials with low dielectric constant are required in electronic packaging and other such applications. Traditionally, high k value materials are associated with high dielectric losses, frequency-dependent dielectric behavior, and high loading of a filler. Materials with low k possess a low thermal conductivity. This creates the new challenges in the development of dielectric materials in both kinds of applications. Use of high dielectric constant filler materials increases the dielectric constant. In this study,the factors affecting the dielectric constant and the dielectric strength of polymer composites are explored. The present work aims to study the effect of various parameters affecting the dielectric properties of the materials. The factors selected in this study are the type of a polymer, type of a filler material used, size, shape, loading level and surface modification of a filler material, and method of preparation of the polymer composites. The study is focused on the dielectric enhancement of polymer nanocomposites used in the field of energy storage devices. The results show that the core-shell structured approach for high dielectric constant materials incorporated in a polymer matrix improves the dielectric constant of the polymer composite.

Multilayer-structured transparent MXene/PVDF film with excellent dielectric and energy storage performance

2019 ◽  
Vol 7 (33) ◽  
pp. 10371-10378 ◽  
Author(s):  
Weiyan Li ◽  
Zhongqian Song ◽  
Jiaming Zhong ◽  
Jing Qian ◽  
Zhongyang Tan ◽  
...  
Keyword(s):  
Dielectric Constant ◽  
Energy Storage ◽  
Dielectric Loss ◽  
High Dielectric Constant ◽  
Vinylidene Fluoride ◽  
Pvdf Film ◽  
Storage Performance ◽  
Poly Vinylidene Fluoride ◽  
High Dielectric

A novel multilayer-structured Ti3C2Tx MXene/poly(vinylidene fluoride) film with a high dielectric constant and ultralow dielectric loss is presented.

Polymer Nanocomposites for Energy Storage Applications

2010 ◽  
Author(s):  
Amira B. Meddeb ◽  
Zoubeida Ounaies
Keyword(s):  
Dielectric Constant ◽  
Energy Storage ◽  
Polymer Nanocomposites ◽  
Dielectric Breakdown ◽  
Breakdown Strength ◽  
Polarized Light ◽  
Scanning Calorimetry ◽  
Low Dielectric ◽  
Energy Storage Applications ◽  
High Dielectric

High dielectric polymer nanocomposites are promising candidates for energy storage applications. The main criteria of focus are high dielectric breakdown strength, high dielectric constant and low dielectric loss. In this study, we investigate the effect of the addition of TiO2 particles to PVDF matrix on the dielectric constant, breakdown and energy density of the system. The dispersion of the particles is qualified by scanning electron microscopy (SEM). The morphology of the composites is characterized by polarized light microscopy, Fourier transform infrared spectroscopy (FTIR) and differential scanning calorimetry (DSC). The dielectric properties are measured by a Novocontrol system with an Alpha analyzer. Finally, the breakdown measurements are carried out by a QuadTech hipot tester.

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