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Utilization of a magnetic field-driven microscopic motion for piezoelectric energy harvesting

Title
Utilization of a magnetic field-driven microscopic motion for piezoelectric energy harvesting
Author
이정호
Issue Date
2019-10
Publisher
ROYAL SOC CHEMISTRY
Citation
NANOSCALE, v. 11, No. 43, Page. 20527-20533
Abstract
In spite of the recent advances in the development of high performing piezoelectric materials, their applications are typically limited to the direct conversion of mechanical impact energy to electrical energy, potentially risking mechanical failures. In this study, we developed piezoelectric poly(vinylidenefluoride-trifluoroethylene) (P(VDF-TrFE)) nanofibers integrated with SiO2-shelled Fe3O4 magnetic nanoparticles, to utilize magnetic energy to reliably drive the piezoelectric effect. Specifically, we show that the shape of the magnetic nanoparticles exerts a significant effect on the efficiency of the magneto-mechano-electrical energy conversion as magnetic nanorods exhibit approximately 70% enhancement in electric field generation under cyclic magnetic fields as compared to nanospheres. Under an alternating magnetic field of 200 mT, the magnetic nanorod-piezoelectric nanofiber composite generated a peak-to-peak voltage of approximately 30 mV(p-p) with a superior durability without any performance degradation after over 1 million cycles. This study demonstrates the potential of magnetic-field responsive, piezoelectric-based materials in energy harvesting applications from non-mechanical energy sources.
URI
https://pubs.rsc.org/ko/content/articlehtml/2019/nr/c9nr04722khttps://repository.hanyang.ac.kr/handle/20.500.11754/122168
ISSN
2040-3364; 2040-3372
DOI
10.1039/c9nr04722k
Appears in Collections:
COLLEGE OF ENGINEERING SCIENCES[E](공학대학) > MATERIALS SCIENCE AND CHEMICAL ENGINEERING(재료화학공학과) > Articles
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