Journal of Nanomedicine & Nanotechnology

Polymer-ceramic nanocomposite for energy storage applications

26^th International Conference on ADVANCED NANOSCIENCE AND NANOTECHNOLOGY

December 05-06, 2022 | Dubai, UAE

Micheline Bejjani

American University in Dubai, United Arab Emirates

Posters & Accepted Abstracts: J Nanomed Nanotechnol

Abstract:

The unique properties of capacitors, in particular their ability to deliver large amount of energy near instantaneously, has made them a material of interest for energy storage. However, their low energy density has prevented their use for large-scale storage. With the advances in material studies and the development of composite materials, properties of dielectric capacitors could be tailored. Polymers and ceramics are both used as primary dielectrics for capacitors. Traditionally, ferroelectric ceramics such as barium titanate (BT) and lead zirconate titanate (PZT) have been used as they possess a large dielectric permittivity. But since early 2000, there has been increasing concerns about toxicity. For that, research has been initiated on finding environment friendly materials to replace the lead-based materials. Many ceramics have been used but with their small breakdown strength, their usage has been limited. Polymers on the other end offer mechanical flexibility and have the ability to be molded into any required configuration for electronic and electric devices with reduced volume and weight. Though they exhibit high breakdown strength, their permittivity is very low, which limits their use in practical applications. The introduction of inorganic materials with large permittivity into polymer matrices to form polymer nanocomposites were found to have better properties and increased energy densities compared to ones made of only polymers or only ceramics. In this study, dielectric properties of capacitors made of different weight volumes of [(Ba(Zr0.2Ti0.8) O3]0.85- [(Ba0.7Ca0.3)TiO3]0.15 (BZT-BCT) ceramic and polylactic acid (PLA) polymer have been studied. It was found that adding 40% of the ceramic to the polymer matrix would increase its energy density by 16%, which is an improvement for energy storage purposes. Recent publications 1. Micheline Bejjani, et.al, (2012). Fourier transform infrared isotopic study of SiC5: Identification of the ν4(σ) mode. The Journal of chemical physics. 36(11):114501 2. Micheline Bejjani, et.al, (2011). Fourier transform infrared matrix and density functional theory study of the vibrational spectrum of the linear MgC3- anion. The Journal of chemical physics. 135. 054513.

Biography :

Micheline Bejjani received her Ph.D. in Molecular and Solid-State Physics from Texas Christian University in 2011. Prior to joining AUD, She worked as Assistant Professor at the Lebanese American University, as well as an instructor at Texas Christian University. She joined AUD in 2012, where she is currently Assistant Professor of Engineering Sciences. Her Ph.D. research was focused on characterizing infrared spectra and structures of small metal-carbon molecules using matrix isolation Fourier transform infrared spectroscopy and density functional theory. She is currently working in collaboration with a group at Texas Christian University on the influence of micro- and nanoscale zinc oxide on bacteria. Her work has been published in high impact journals and presented at local and international conferences.