Sodium-potassium niobate nanorods with various crystal structures and their application to nanogenerator
- Authors
- Xu, HaiBo; Lee, Tae-Gon; Park, Su-Jin; Kim, Bo-Yun; Nahm, Sahn
- Issue Date
- 4월-2017
- Publisher
- WILEY
- Keywords
- lead-free piezoelectric materials; Na1-xKxNbO3 nanorods; piezoelectric nanogenerators; piezoelectric strain constant
- Citation
- JOURNAL OF THE AMERICAN CERAMIC SOCIETY, v.100, no.4, pp.1673 - 1681
- Indexed
- SCIE
SCOPUS
- Journal Title
- JOURNAL OF THE AMERICAN CERAMIC SOCIETY
- Volume
- 100
- Number
- 4
- Start Page
- 1673
- End Page
- 1681
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/83981
- DOI
- 10.1111/jace.14664
- ISSN
- 0002-7820
- Abstract
- (Na1-xKx)NbO3 (NKN) nanorods with an orthorhombic (OR) structure, a rhombohedral (RH) structure, or a polymorphic phase (PP) structure, which contains both OR and RH structures, are prepared. The presence of RH and PP NKN nanorods is explained by the existence of OH- defects at the O2- sites of the NKN nanorods. The PP NKN nanorods grown on a Nb5+-doped SrTiO3 substrate show the largest piezoelectric strain constant of 175pm/V because they have more directions for dipole rotation than OR and RH NKN nanorods. Piezoelectric nanogenerators (NGs) are synthesized using composites consisting of NKN nanorods with various structures and polydimethylsiloxane. The largest open-circuit output voltage is 35V, and the short-circuit current is 5.0A, which are obtained using the NG containing 0.7g of PP NKN nanorods. Moreover, this NG shows a maximum output power of 16.5W for an external load of 10.0M Omega.
- Files in This Item
- There are no files associated with this item.
- Appears in
Collections - College of Engineering > Department of Materials Science and Engineering > 1. Journal Articles
![qrcode](https://api.qrserver.com/v1/create-qr-code/?size=55x55&data=https://scholar.korea.ac.kr/handle/2021.sw.korea/83981)
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.