期刊
ADVANCED ELECTRONIC MATERIALS
卷 7, 期 1, 页码 -出版社
WILEY
DOI: 10.1002/aelm.202000969
关键词
energy harvesting; magnetoelectrics; Metglas laminations; poly(vinylidene fluoride‐ co‐ trifluoroethylene); self‐ powered electronics
资金
- KIMS Principal R&D project of the Republic of Korea [PNK6820]
- Basic Science Research Program of the National Research Foundation of Korea - Ministry of Education [NRF-2019R1I1A2A01057073]
- Ministry of Science and ICT [NRF-2018R1A4A1022260]
- National Research Council of Science & Technology (NST), Republic of Korea [PNK6820] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
The study introduces a MME generator based on a magnetostrictive metallic substrate and piezoelectric polymer that converts ambient stray magnetic fields into electricity. Experimental results show that the fabricated MME generator has a high magnetoelectric voltage coefficient and performance, providing a future direction for magnetoelectric energy harvesting.
Magneto-mechano-electric (MME) generators, which convert ubiquitous stray magnetic field into electricity, have attracted significant attention as a permanent power source for innumerable sensors. In this study, a MME generator based on magnetostrictive metallic substrate and piezoelectric polymer is reported. After the metallic glass sheets are stacked using adhesives, ferroelectric poly(vinylidene fluoride-co-trifluoroethylene) is spin-casted onto Metglas lamination. The fabricated MME generator harvests an output peak voltage of approximate to 12.5 V under the applied alternating current magnetic field of 7 Oe at 38.2 Hz. A high magnetoelectric voltage coefficient of 910.14 V cm(-1) Oe(-1) obtained from the energy device is higher than those reported earlier in inorganic and polymeric piezoelectric components-based MME generators. Moreover, finite element analysis using the multiphysics simulation is carried out to theoretically investigate the magnetoelectric energy harvesting of the fabricated MME generator. This research results achieve low cost, mechanical stability, eco-friendliness, and high performance for MME generators, which is anticipated to provide a future direction for magnetoelectric energy harvesting.
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