Method for Synthesizing Low Dielectric Composite Material for Enhanced Energy Storage Applications

Abstract

The present invention relates to a method for synthesizing low dielectric composite materials designed for energy storage applications. The composite material consists of a polymer matrix, such as polytetrafluoroethylene (PTFE), polyimide (PI), or polyethylene terephthalate (PET), constituting 60–80% by weight, combined with functionalized fillers, including boron nitride (BN), silicon dioxide (SiO₂), or graphene oxide (GO), constituting 20–40% by weight. The fillers are surface-modified using silane coupling agents or acid treatments to ensure compatibility and uniform dispersion within the polymer matrix. Fabrication methods such as solution casting, melt blending, and electrospinning are employed, followed by annealing at temperatures between 120–180°C to enhance material properties. The resulting composite material exhibits a dielectric constant below 2.5, a loss tangent of less than 0.01, high thermal stability, and excellent mechanical strength, making it suitable for advanced energy storage devices, ca

Specification

Description:[001] The present invention relates to composite materials with low dielectric properties, specifically designed for energy storage applications. The invention includes defined compositions and temperature parameters for synthesizing these materials, ensuring optimal properties for capacitors, batteries, and other energy storage devices.
BACKGROUND OF THE INVENTION
[002] The following description provides the information that may be useful in understanding the present invention. It is not an admission that any of the information provided herein is prior art or relevant to the presently claimed invention, or that any publication specifically or implicitly referenced is prior art.
[003] Further, the approaches described in this section are approaches that could be pursued, but not necessarily approaches that have been previously conceived or pursued. Therefore, unless otherwise indicated, it should not be assumed that any of the approaches described in this section qualify as prior art merely by virtue of their , Claims:1. A method for synthesizing a low dielectric composite material for energy storage applications, comprising:
a) selecting a polymer matrix from the group consisting of polytetrafluoroethylene (PTFE), polyimide (PI), and polyethylene terephthalate (PET), constituting 60-80% by weight of the composite;
b) incorporating functionalized fillers selected from boron nitride (BN), silicon dioxide (SiO₂), or graphene oxide (GO), constituting 20-40% by weight of the composite;
c) dispersing the fillers within the polymer matrix using solution casting, melt blending, or electrospinning; and
d) annealing the composite at a temperature between 120-180°C for 2-4 hours.
2. The method as claimed in Claim 1, wherein the polymer is dissolved in a solvent selected from N-methyl-2-pyrrolidone (NMP) or dimethylformamide (DMF) at a temperature range of 200-350°C during the solution casting process.
3. The method as claimed in Claim 1, wherein the fillers are functionalized using surface treatments such as:
silane coupling agents

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