Wearable Core-Shell Piezoelectric Nanofiber Yarns for Body Movement Energy Harvesting
In an effort to fabricate a wearable piezoelectric energy harvester based on core-shell piezoelectric yarns with external electrodes, flexible piezoelectric nanofibers of BNT-ST (0.78Bi<sub>0.5</sub>Na<sub>0.5</sub>TiO<sub>3</sub>-0.22SrTiO<sub>3</sub>...
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| Format: | Article |
| Language: | English |
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MDPI AG
2019-04-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/9/4/555 |
| _version_ | 1818822348282789888 |
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| author | Sang Hyun Ji Yong-Soo Cho Ji Sun Yun |
| author_facet | Sang Hyun Ji Yong-Soo Cho Ji Sun Yun |
| author_sort | Sang Hyun Ji |
| collection | DOAJ |
| description | In an effort to fabricate a wearable piezoelectric energy harvester based on core-shell piezoelectric yarns with external electrodes, flexible piezoelectric nanofibers of BNT-ST (0.78Bi<sub>0.5</sub>Na<sub>0.5</sub>TiO<sub>3</sub>-0.22SrTiO<sub>3</sub>) and polyvinylidene fluoride-trifluoroethylene (PVDF-TrFE) were initially electrospun. Subsequently, core-shell piezoelectric nanofiber yarns were prepared by twining the yarns around a conductive thread. To create the outer electrode layers, the core-shell piezoelectric nanofiber yarns were braided with conductive thread. Core-shell piezoelectric nanofiber yarns with external electrodes were then directly stitched onto the fabric. In bending tests, the output voltages were investigated according to the total length, effective area, and stitching interval of the piezoelectric yarns. Stitching patterns of the piezoelectric yarns on the fabric were optimized based on these results. The output voltages of the stitched piezoelectric yarns on the fabric were improved with an increase in the pressure, and the output voltage characteristics were investigated according to various body movements of bending and pressing conditions. |
| first_indexed | 2024-12-18T23:22:39Z |
| format | Article |
| id | doaj.art-0e05842207134b0e8eadba6e773bf16c |
| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-12-18T23:22:39Z |
| publishDate | 2019-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj.art-0e05842207134b0e8eadba6e773bf16c2022-12-21T20:47:53ZengMDPI AGNanomaterials2079-49912019-04-019455510.3390/nano9040555nano9040555Wearable Core-Shell Piezoelectric Nanofiber Yarns for Body Movement Energy HarvestingSang Hyun Ji0Yong-Soo Cho1Ji Sun Yun2Energy& Environmental Division, Korea Institute of Ceramic Engineering and Technology, 101, Soho-ro, Jinju 52851, KoreaDepartment of Materials Science & Engineering, Yonsei University, 50, Yonsei-ro, Seodaemun-gu, Seoul 03021, KoreaEnergy& Environmental Division, Korea Institute of Ceramic Engineering and Technology, 101, Soho-ro, Jinju 52851, KoreaIn an effort to fabricate a wearable piezoelectric energy harvester based on core-shell piezoelectric yarns with external electrodes, flexible piezoelectric nanofibers of BNT-ST (0.78Bi<sub>0.5</sub>Na<sub>0.5</sub>TiO<sub>3</sub>-0.22SrTiO<sub>3</sub>) and polyvinylidene fluoride-trifluoroethylene (PVDF-TrFE) were initially electrospun. Subsequently, core-shell piezoelectric nanofiber yarns were prepared by twining the yarns around a conductive thread. To create the outer electrode layers, the core-shell piezoelectric nanofiber yarns were braided with conductive thread. Core-shell piezoelectric nanofiber yarns with external electrodes were then directly stitched onto the fabric. In bending tests, the output voltages were investigated according to the total length, effective area, and stitching interval of the piezoelectric yarns. Stitching patterns of the piezoelectric yarns on the fabric were optimized based on these results. The output voltages of the stitched piezoelectric yarns on the fabric were improved with an increase in the pressure, and the output voltage characteristics were investigated according to various body movements of bending and pressing conditions.https://www.mdpi.com/2079-4991/9/4/555lead-free piezoelectric nanofiberspiezoelectric yarnselectrospinningnanogeneratorwearable devices |
| spellingShingle | Sang Hyun Ji Yong-Soo Cho Ji Sun Yun Wearable Core-Shell Piezoelectric Nanofiber Yarns for Body Movement Energy Harvesting Nanomaterials lead-free piezoelectric nanofibers piezoelectric yarns electrospinning nanogenerator wearable devices |
| title | Wearable Core-Shell Piezoelectric Nanofiber Yarns for Body Movement Energy Harvesting |
| title_full | Wearable Core-Shell Piezoelectric Nanofiber Yarns for Body Movement Energy Harvesting |
| title_fullStr | Wearable Core-Shell Piezoelectric Nanofiber Yarns for Body Movement Energy Harvesting |
| title_full_unstemmed | Wearable Core-Shell Piezoelectric Nanofiber Yarns for Body Movement Energy Harvesting |
| title_short | Wearable Core-Shell Piezoelectric Nanofiber Yarns for Body Movement Energy Harvesting |
| title_sort | wearable core shell piezoelectric nanofiber yarns for body movement energy harvesting |
| topic | lead-free piezoelectric nanofibers piezoelectric yarns electrospinning nanogenerator wearable devices |
| url | https://www.mdpi.com/2079-4991/9/4/555 |
| work_keys_str_mv | AT sanghyunji wearablecoreshellpiezoelectricnanofiberyarnsforbodymovementenergyharvesting AT yongsoocho wearablecoreshellpiezoelectricnanofiberyarnsforbodymovementenergyharvesting AT jisunyun wearablecoreshellpiezoelectricnanofiberyarnsforbodymovementenergyharvesting |