Dielectric properties of SiO2:PMMA nanocomposites for energy storage

Jobin, Marc (School of Engineering, Architecture and Landscape (hepia), HES-SO // University of Applied Sciences Western Switzerland)

We have made a SiO2:PMMA hybrid nanocomposite based on 150nm spherical silica nanoparticles synthetized by sol-gel method. A molecule containing a methacrylate group (TPM), was chemically grafted to the silica surface to improve the electrical performance. The filling factor of the nanonanocomposite was up to 20%vol. The ~1um thick nanocomposite films were deposited on polished steel by spin coating. Compared to similarly prepared PMMA films, the dielectric constant, as measured by BDS (proadband dielectric spectroscopy) was enhanced by a factor of two for the nanocomposite, and the disruptive electric field by a factor of 2.5. This eventually yields an overall improvement of the energy density by a factor of 12.5.


Keywords:
Article Type:
scientifique
Faculty:
Ingénierie et Architecture
School:
HEPIA - Genève
Institute:
inSTI - Institut des Sciences et Technologies industrielles
Subject(s):
Ingénierie
Date:
2019-06
Pagination:
5 p.
Published in:
Techconnect Briefs 2019
Numeration (vol. no.):
2019, pp. 154-158
ISBN:
978-0-9988782-8-7
Appears in Collection:



 Record created 2019-07-16, last modified 2019-08-06

Fulltext:
Download fulltext
PDF

Rate this document:

Rate this document:
1
2
3
 
(Not yet reviewed)