Structural, morphological and dielectric testingof chitosan-based composites with applicative potential in energy storage
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BARZIC, Andreea Irina, STOICA, Iuliana, ALBU, Raluca Marinica, CURICHERIU, Lavinia Petronela, BUSCAGLIA, Maria Teresa. Structural, morphological and dielectric testingof chitosan-based composites with applicative potential in energy storage. In: Patrimoniul cultural de ieri – implicaţii în dezvoltarea societăţii durabile de mâine, Ed. 8, 8-9 februarie 2024, Chişinău. Iași – Chișinău-Lviv: 2024, Ediția 9, pp. 87-88. ISSN 2558 – 894X.
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Patrimoniul cultural de ieri – implicaţii în dezvoltarea societăţii durabile de mâine
Ediția 9, 2024
Conferința "Yesterday’s cultural heritage – contribution to the development of tomorrow’s sustainable society"
8, Chişinău, Moldova, 8-9 februarie 2024

Structural, morphological and dielectric testingof chitosan-based composites with applicative potential in energy storage

Testarea structurală, morfologică și dielectrică a unor compozite pe bază de chitosan cu potențial aplicativ în stocarea de energie


Pag. 87-88

Barzic Andreea Irina1, Stoica Iuliana1, Albu Raluca Marinica1, Curicheriu Lavinia Petronela2, Buscaglia Maria Teresa3
 
1 “Petru Poni” Institute of Macromolecular Chemistry,
2 Alexandru Ioan Cuza University of Iaşi,
3 Istituto di Chimica della Materia Condensata e di Tecnologie per l'Energia (ICMATE) (IENI-CNR)
 
 
Disponibil în IBN: 7 mai 2024


Rezumat

The production of innovative materials with cutting-edge properties is primarily responsible for the advancements in the energy sector. In particular, the fabrication of the capacitors is mainly based on sandwiching a dielectric material between two electrodes. It is widely acknowledged that the energy density in the dielectric medium is a function of the permittivity and the electric field intensity. This work is dealing with the prepara-tion and investigation of new dielectric materials starting from chitosan – as matrix, and barium titanate powder – asferroelectric filler. The chosen reinforcement agent was pre-pared by co-precipitation technique at low temperatures (900C). The X-ray diffraction studies proved that the ceramic particles display the perovskite structure. Moreover, the morphological aspects of the ferroelectric particles were examined by transmission elec-tron microscopy and the images revealed that all synthesized powders are homogeneous in size, which is around 300 nm. The studied films were produced by using the dry phase inversion method, in which the ferroelectric filler was dispersed in the aqueous solutions of chitosan. Fourier-transform infrared spectroscopy was applied to the chitosan and chi-tosan-based composite foils to analyze the structural features. The samples were also studied by dielectric spectroscopy to check the permittivity changes upon insertion of variable amounts of ferroelectric particles in chitosan. The enhancement of the permittivity recommends the dielectric composites as good candidates for making capacitor de-vices.