Frequency-Dependent Dielectric Properties Optimization of Polymer-Based-BT Nanocomposites for High Energy Density Applications

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Nanodielectric materials become one of the new materials to play a sole role in sustainable and clean energy production, energy transportation, energy storage, and end usage in terms of energy storage capabilities due to the trade-off between dielectric constant, dielectric loss and voltage breakdown. Based on our recent research articles, BT/Parylene and BT/P(VDF-HFP) high energy density nanodielectric composites have been investigated as a function of frequency and also the volume fraction of nanoparticles at room temperature by several theoretical models. The projected models combined with Debye type of dissipation and soft mode theory to obtain more precise frequency dependent dielectric spectrum of BT. Among the others, Lichtnecker model, Maxwell-Wagner model, and modified Kerner model were used to find the frequency dependent nanocomposites dielectric spectrum. A similar model of Wiener upper bound was proposed for the dielectric loss tangent prediction with a wide frequency range. The predicted results are compared with the experimental results and explored the frequency dependent dielectric activities of nanocomposite. This proposed model provides the essential information on dielectric properties of polymer-based BT nanocomposites with a wide frequency range instead of trial-and-error strategy of experiments for the future development of high energy density applications.

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Journal: TechConnect Briefs
Volume: 1, Nanotechnology 2013: Advanced Materials, CNTs, Particles, Films and Composites (Volume 1)
Published: May 12, 2013
Pages: 554 - 557
Industry sector: Advanced Materials & Manufacturing
Topics: Advanced Materials for Engineering Applications, Composite Materials
ISBN: 978-1-4822-0581-7