The idea of this work is finding the way to efficiently and safely use mechanical energy released in small quantities around us to power up small-scale electronic devices used in everyday life. To this purpose, flexible lead-free piezoelectric composite films were prepared by hot pressing. Different amounts (30, 35 and 40 vol%) of lead-free piezoelectric material bismuth sodium titanate-barium titanate were embedded in the matrix of polyvinylidene fluoride under carefully optimized conditions of temperature and pressure, obtaining flexible films with quite homogeneous distribution of piezo-active filler. ATR-FTIR analysis revealed that hot pressing the flexible films caused a transformation of electro-inactive PVDF alpha-phase into electro-active beta and gamma phases. Dielectric measurements showed an increase of the permittivity up to 80 with the active phase increasing. Anelastic measurements showed that the elastic modulus increases as well with the fraction of active ceramic phase.... Lastly, obtained flexible polymer-composites demonstrated notable properties both for energy storage and energy harvesting application, showing up to 74% of energy storage efficiency and, from testing of the force impact, up to 9 V and similar to 80 mu W of output voltage and power.
Keywords:
Polymers / Piezoelectricity / Energy storage materials / Energy harvesting / Composite materials
Source:
Journal of Alloys and Compounds, 2021, 884
Publisher:
Elsevier Science Sa, Lausanne
Funding / projects:
Ministry of Foreign Affairs and International Cooperation of Italy [RS19MO01]
TY - JOUR
AU - Vijatović-Petrović, Mirjana
AU - Cordero, F.
AU - Mercadelli, E.
AU - Brunengo, E.
AU - Ilić, Nikola
AU - Galassi, C.
AU - Despotović, Z.
AU - Bobić, Jelena
AU - Džunuzović, Adis
AU - Stagnaro, P.
AU - Canu, G.
AU - Craciun, F.
PY - 2021
UR - http://rimsi.imsi.bg.ac.rs/handle/123456789/1465
AB - The idea of this work is finding the way to efficiently and safely use mechanical energy released in small quantities around us to power up small-scale electronic devices used in everyday life. To this purpose, flexible lead-free piezoelectric composite films were prepared by hot pressing. Different amounts (30, 35 and 40 vol%) of lead-free piezoelectric material bismuth sodium titanate-barium titanate were embedded in the matrix of polyvinylidene fluoride under carefully optimized conditions of temperature and pressure, obtaining flexible films with quite homogeneous distribution of piezo-active filler. ATR-FTIR analysis revealed that hot pressing the flexible films caused a transformation of electro-inactive PVDF alpha-phase into electro-active beta and gamma phases. Dielectric measurements showed an increase of the permittivity up to 80 with the active phase increasing. Anelastic measurements showed that the elastic modulus increases as well with the fraction of active ceramic phase. Lastly, obtained flexible polymer-composites demonstrated notable properties both for energy storage and energy harvesting application, showing up to 74% of energy storage efficiency and, from testing of the force impact, up to 9 V and similar to 80 mu W of output voltage and power.
PB - Elsevier Science Sa, Lausanne
T2 - Journal of Alloys and Compounds
T1 - Flexible lead-free NBT-BT/PVDF composite films by hot pressing for low-energy harvesting and storage
VL - 884
DO - 10.1016/j.jallcom.2021.161071
ER -
@article{
author = "Vijatović-Petrović, Mirjana and Cordero, F. and Mercadelli, E. and Brunengo, E. and Ilić, Nikola and Galassi, C. and Despotović, Z. and Bobić, Jelena and Džunuzović, Adis and Stagnaro, P. and Canu, G. and Craciun, F.",
year = "2021",
abstract = "The idea of this work is finding the way to efficiently and safely use mechanical energy released in small quantities around us to power up small-scale electronic devices used in everyday life. To this purpose, flexible lead-free piezoelectric composite films were prepared by hot pressing. Different amounts (30, 35 and 40 vol%) of lead-free piezoelectric material bismuth sodium titanate-barium titanate were embedded in the matrix of polyvinylidene fluoride under carefully optimized conditions of temperature and pressure, obtaining flexible films with quite homogeneous distribution of piezo-active filler. ATR-FTIR analysis revealed that hot pressing the flexible films caused a transformation of electro-inactive PVDF alpha-phase into electro-active beta and gamma phases. Dielectric measurements showed an increase of the permittivity up to 80 with the active phase increasing. Anelastic measurements showed that the elastic modulus increases as well with the fraction of active ceramic phase. Lastly, obtained flexible polymer-composites demonstrated notable properties both for energy storage and energy harvesting application, showing up to 74% of energy storage efficiency and, from testing of the force impact, up to 9 V and similar to 80 mu W of output voltage and power.",
publisher = "Elsevier Science Sa, Lausanne",
journal = "Journal of Alloys and Compounds",
title = "Flexible lead-free NBT-BT/PVDF composite films by hot pressing for low-energy harvesting and storage",
volume = "884",
doi = "10.1016/j.jallcom.2021.161071"
}
Vijatović-Petrović, M., Cordero, F., Mercadelli, E., Brunengo, E., Ilić, N., Galassi, C., Despotović, Z., Bobić, J., Džunuzović, A., Stagnaro, P., Canu, G.,& Craciun, F.. (2021). Flexible lead-free NBT-BT/PVDF composite films by hot pressing for low-energy harvesting and storage. in Journal of Alloys and Compounds
Elsevier Science Sa, Lausanne., 884.
https://doi.org/10.1016/j.jallcom.2021.161071
Vijatović-Petrović M, Cordero F, Mercadelli E, Brunengo E, Ilić N, Galassi C, Despotović Z, Bobić J, Džunuzović A, Stagnaro P, Canu G, Craciun F. Flexible lead-free NBT-BT/PVDF composite films by hot pressing for low-energy harvesting and storage. in Journal of Alloys and Compounds. 2021;884.
doi:10.1016/j.jallcom.2021.161071 .
Vijatović-Petrović, Mirjana, Cordero, F., Mercadelli, E., Brunengo, E., Ilić, Nikola, Galassi, C., Despotović, Z., Bobić, Jelena, Džunuzović, Adis, Stagnaro, P., Canu, G., Craciun, F., "Flexible lead-free NBT-BT/PVDF composite films by hot pressing for low-energy harvesting and storage" in Journal of Alloys and Compounds, 884 (2021),
https://doi.org/10.1016/j.jallcom.2021.161071 . .
