Related Experiment Video
Updated: Mar 22, 2026
Application of a Coupling Agent to Improve the Dielectric Properties of Polymer-Based Nanocomposites
Published on: September 19, 2020
Improved breakdown strength and electrical energy storage performance of γ-poly(vinylidene fluoride)/unmodified
Sujoy Kumar Ghosh1, Wahida Rahman1, Tapas Ranjan Middya1
1Organic Nano-Piezoelectric Device Laboratory, Department of Physics, Jadavpur University, Kolkata 700032, India.
Abstract:
A remarkable improvement in the dielectric breakdown strength (Eb) and discharge energy density (U e) of flexible polymer nanocomposites is realized by the incorporation of unmodified smectite montmorillonite (MMT) nanoclay into a poly(vinylidene fluoride) (PVDF) matrix. The resulting PVDF/MMT clay nanocomposite (PCN) films stabilize the γ phase and increase the path tortuosity via strong intercalation of the PVDF matrix into inorganic layered silicates without sacrificing the quality of surface morphology. The PCN films exhibits superior dielectric properties (up to ε r ∼ 28 and tan δ ∼ 0.032 at 1 kHz) than those of pure PVDF. As a result, a large increase in E b of 873 MV m(-1) and U e of 24.9 J cm(-3) is achieved. Subsequently, the PCN films possess more than 60% charge-discharge efficiency even at higher electric field and thus provide a scope to develop high energy density flexible and transparent materials for energy storage technologies.
More Related Videos
08:59Concurrent Quantitative Conductivity and Mechanical Properties Measurements of Organic Photovoltaic Materials using AFM
Published on: January 23, 2013
08:59Synthesizing a Gel Polymer Electrolyte for Supercapacitors, Assembling a Supercapacitor Using a Coin Cell, and Measuring Gel Electrolyte Performance
Published on: November 30, 2022
Related Concept Videos
01:31Dielectric Polarization in a Capacitor
01:27Electrostatic Boundary Conditions in Dielectrics
Consider a case where both the mediums across a boundary are two different dielectric materials. Recall that the electric field and electric displacement are proportional and related through the material's permittivity....