Piezoelectric BaTiO3 microclusters and embossed ZnSnO3 microspheres-based monolayer for highly-efficient and flexible composite generator
- Authors
- Park, Hongbeom; Hyeon, Dong Yeol; Jung, Minwoo; Park, Kwi-Il; Park, Jinsub
- Issue Date
- Dec-2020
- Publisher
- ELSEVIER SCI LTD
- Keywords
- Piezoelectric; BaTiO3 cluster; Microsphere; Energy harvesting; Self-powered
- Citation
- COMPOSITES PART B-ENGINEERING, v.203, pp.1 - 8
- Indexed
- SCIE
SCOPUS
- Journal Title
- COMPOSITES PART B-ENGINEERING
- Volume
- 203
- Start Page
- 1
- End Page
- 8
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/2007
- DOI
- 10.1016/j.compositesb.2020.108476
- ISSN
- 1359-8368
- Abstract
- As a permanent power source for self-powered electronics, piezoelectric energy harvesters (PEHs), which convert waste mechanical energy into electrical energy, have attracted considerable interest. We herein developed a high-performance PEH by employing a piezoelectric BaTiO3 microclusters (MCs) composite and a ZnSnO3 mi-crospheres (MSs)-based pressure concentrator. The piezoelectric composite film and an embossed pressure concentrator were fabricated by optimized bar-coating and unidirectional rubbing processes, respectively. The final energy device, fabricated by stacking a ZnSnO3 MSs-based embossed pressure concentrator onto a BaTiO3 MCs-based piezoelectric composite, harvested output signals of similar to 206 V and similar to 24 mu A under an applied pressure of 0.27 MPa, which are significantly improved results compared to previously reported composite-type PEHs. Furthermore, multiphysics-based finite element analysis was performed to support the hypothesis of effective piezo-potential distribution by adopting the BaTiO3 MCs embedded in polymeric matrix and attaching the ZnSnO3 MSs-monolayer onto the piezoelectric composite. This technology represents a new approach with significant advantages for fabricating high-output composite-based PEHs.
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