Hybrid piezoelectric-electrostatic generators for wearable energy harvesting applications
| Autor: | Claire Jean-Mistral, Alain Sylvestre, Giulia Lombardi, Clara Lagomarsini |
|---|---|
| Přispěvatelé: | Laboratoire de Génie Electrique de Grenoble (G2ELab), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019]), Laboratoire de Mécanique des Contacts et des Structures [Villeurbanne] (LaMCoS), Institut National des Sciences Appliquées de Lyon (INSA Lyon), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Université de Lyon-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS), Dept. Of Electrical, Electronic And Information Engineering, University Of Bologna, University of Bologna |
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Materials science
02 engineering and technology Dielectric 01 natural sciences 7. Clean energy Synchronization (alternating current) 0103 physical sciences General Materials Science Ceramic Electrical and Electronic Engineering Polarization (electrochemistry) Civil and Structural Engineering 010302 applied physics Coupling business.industry [SPI.NRJ]Engineering Sciences [physics]/Electric power Converters 021001 nanoscience & nanotechnology Condensed Matter Physics Piezoelectricity Atomic and Molecular Physics and Optics Mechanics of Materials visual_art Signal Processing visual_art.visual_art_medium Optoelectronics 0210 nano-technology business Energy harvesting |
| Zdroj: | Smart Materials and Structures Smart Materials and Structures, IOP Publishing, 2019, 28 (3), pp.035003. ⟨10.1088/1361-665X/aaf34e⟩ |
| ISSN: | 0964-1726 1361-665X |
| Popis: | Dielectric elastomer generators (DEGs) are promising soft electrostatic converters. Despite their several advantages, these generators are not well developed in the literature due to the need of an external polarization voltage to perform the energetic cycle. In order to overcome this drawback and to design a scavenger with a longer lifetime, we propose to substitute the external polarization source in DEGs by coupling them with piezoelectric materials. The charge produced by the piezoelectric material due to external mechanical excitation are employed as polarization source of the DEG. Two different prototypes have been designed, simulated and realized: the first one employs piezoelectric ceramic as polarization element of an acrylic-based DEG and the second one employing a piezoelectric polymer. A smart frame insures a perfect mechanical and electrical synchronization leading to interesting level of scavenged energy density (up to 14.3 ?J.g?1 and 0.39 ?J.g?1 respectively). These solutions, compared to the ones proposed in the literature, present the advantages to be compact, do not need additional electronic element and can guarantee a polarization source to the device at each deformation cycle. The devices structure, working principles and experimental performance will be presented and discussed, together with the possible improvements to enhance the performance of the devices. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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