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Proceedings Paper

Novel composite piezoelectric material for energy harvesting applications
Author(s): Giedrius Janusas; Asta Guobiene; Arvydas Palevicius; Igoris Prosycevas; Sigita Ponelyte; Valentinas Baltrusaitis; Rokas Sakalys
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Paper Abstract

Past few decades were concentrated on researches related to effective energy harvesting applied in modern technologies, MEMS or MOEMS systems. There are many methods for harvesting energy as, for example, usage of electromagnetic devices, but most dramatic changes were noticed in the usage of piezoelectric materials in small scale devices. Major limitation faced was too small generated power by piezoelectric materials or high resonant frequencies of such smallscale harvesters. In this research, novel composite piezoelectric material was created by mixing PZT powder with 20% solution of polyvinyl butyral in benzyl alcohol. Obtained paste was screen printed on copper foil using 325 mesh stainless steel screen and dried for 30 min at 100 °C. Polyvinyl butyral ensures good adhesion and flexibility of a new material at the conditions that requires strong binding. Five types of a composite piezoelectric material with different concentrations of PZT (40%, 50%, 60%, 70% and 80 %) were produced. As the results showed, these harvesters were able to transform mechanical strain energy into electric potential and, v.v. In experimental setup, electromagnetic shaker was used to excite energy harvester that is fixed in the custom-built clamp, while generated electric potential were registered with USB oscilloscope PICO 3424. The designed devices generate up to 80 μV at 50 Hz excitation. This property can be applied to power microsystem devices or to use them in portable electronics and wireless sensors. However, the main advantage of the created composite piezoelectric material is possibility to apply it on any uniform or nonuniform vibrating surface and to transform low frequency vibrations into electricity.

Paper Details

Date Published: 2 April 2015
PDF: 6 pages
Proc. SPIE 9430, Electroactive Polymer Actuators and Devices (EAPAD) 2015, 943030 (2 April 2015); doi: 10.1117/12.2176628
Show Author Affiliations
Giedrius Janusas, Kaunas Univ. of Technology (Lithuania)
Asta Guobiene, Kaunas Univ. of Technology (Lithuania)
Arvydas Palevicius, Kaunas Univ. of Technology (Lithuania)
Igoris Prosycevas, Kaunas Univ. of Technology (Lithuania)
Sigita Ponelyte, Kaunas Univ. of Technology (Lithuania)
Valentinas Baltrusaitis, Kaunas Univ. of Technology (Lithuania)
Rokas Sakalys, Kaunas Univ. of Technology (Lithuania)

Published in SPIE Proceedings Vol. 9430:
Electroactive Polymer Actuators and Devices (EAPAD) 2015
Yoseph Bar-Cohen, Editor(s)

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