Supersonically Sprayed Cobalt Titanate and PVDF for Flexible Piezoelectric Nanogenerators.
In: International Journal of Energy Research, 2023-11-16, S. 1-15
Online
academicJournal
Zugriff:
Piezoelectric nanogenerators (PENGs) are the core components of self-powered devices used in sensors, ecofriendly wearable gadgets, and biomedical implants. This study introduces and demonstrates a flexible PENG with supersonically cold-sprayed films of cobalt titanate (CTO) and polyvinylidene fluoride (PVDF). An electrically poled PENG produces a maximum output voltage of 34.8 V under a tapping force of 20 N, whereas a CTO/PVDF-based PENG exhibits 25.4 V across a loading resistance ( R L ) of 50 MΩ and generates a short-circuit current of 30 μA at 0.1 MΩ. Furthermore, the maximum power density is 25 μW·cm-2 at R L = 0.6 MΩ. Cyclic tapping and bending test results show that open-circuit voltages (Voc) of 25.4 and 5.8 V are produced under the tapping cycle of N tap = 4200 and bending cycle of N bend = 750 , respectively, confirming the mechanical durability of the PENG. Thus, the potential of CTO/PVDF films for use in PENGs with various functionalities can be confirmed based on the V oc values generated from bending, mobile tapping, walking, and lifting movements. [ABSTRACT FROM AUTHOR]
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Supersonically Sprayed Cobalt Titanate and PVDF for Flexible Piezoelectric Nanogenerators.
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Autor/in / Beteiligte Person: | Park, Chanwoo ; Joshi, Bhavana ; Samuel, Edmund ; Kim, Byeong-yeop ; Aldalbahi, Ali ; El-Newehy, Mohamed ; Lee, Hae-Seok ; Yoon, Sam S. |
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Zeitschrift: | International Journal of Energy Research, 2023-11-16, S. 1-15 |
Veröffentlichung: | 2023 |
Medientyp: | academicJournal |
ISSN: | 0363-907X (print) |
DOI: | 10.1155/2023/8870780 |
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