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Lead-free BaTiO3 Nanowire Arrays-based Piezoelectric Energy Harvester

Published online by Cambridge University Press:  24 April 2017

Changyeon Baek ,
Hyeonbin Park ,
Jong Hyuk Yun ,
Do Kyung Kim  and
Kwi-Il Park
Changyeon Baek
Affiliation:
Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea
Hyeonbin Park
Affiliation:
Department of Energy Engineering, Gyeongnam National University of Science and Technology (GNTECH), 33 Dongjin-ro, Jinju-si, Gyeongsangnam-do, 52725, Republic of Korea
Jong Hyuk Yun
Affiliation:
Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea
Do Kyung Kim
Affiliation:
Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea
Kwi-Il Park*
Affiliation:
Department of Energy Engineering, Gyeongnam National University of Science and Technology (GNTECH), 33 Dongjin-ro, Jinju-si, Gyeongsangnam-do, 52725, Republic of Korea
*
*(Email: kipark@gntech.ac.kr)
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Abstract

Vertically aligned BaTiO3 nanowire (NW) arrays on a Ti substrate were adopted for use in piezoelectric energy harvesting device that scavenges electricity from mechanical energy. BaTiO3 NWs were simultaneously grown at the top and bottom surfaces of a Ti substrate by two-step hydrothermal process. To characterized the piezoelectric output performance of the individual NW, we transferred a BaTiO3 single NW that was selected from well-aligned NW arrays onto a flexible substrate and measured the electric signals during the bending/unbending motions. For fabricating a piezoelectric energy harvester (PEH), both NW arrays were sandwiched between two transparent indium tin oxide (ITO)-coated polyethylene terephthalate (PET) plastic films and then packaged with polydimethylsiloxane (PDMS) elastomer. A lead-free BaTiO3 NW array-based PEH produced an output voltage of about 90 V and a maximum current of 1.2 μA under periodically bending motions.

Keywords

piezoelectricenergy generationnanostructure
Type
Articles
Information
MRS Advances , Volume 2 , Issue 56: Energy Storage and Conversion , 2017 , pp. 3415 - 3420
Copyright
Copyright © Materials Research Society 2017 

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