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Microstructure Dependence of Output Performance in Flexible PVDF Piezoelectric Nanogenerators

Flexible piezoelectric nanogenerators have attracted great attention due to their ability to convert ambient mechanical energy into electrical energy for low-power wearable electronic devices. Controlling the microstructure of the flexible piezoelectric materials is a potential strategy to enhance t...

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Detalles Bibliográficos
Autores principales: Jiang, Yijing, Deng, Yongju, Qi, Hongyan
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8512523/
https://www.ncbi.nlm.nih.gov/pubmed/34641066
http://dx.doi.org/10.3390/polym13193252
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author Jiang, Yijing
Deng, Yongju
Qi, Hongyan
author_facet Jiang, Yijing
Deng, Yongju
Qi, Hongyan
author_sort Jiang, Yijing
collection PubMed
description Flexible piezoelectric nanogenerators have attracted great attention due to their ability to convert ambient mechanical energy into electrical energy for low-power wearable electronic devices. Controlling the microstructure of the flexible piezoelectric materials is a potential strategy to enhance the electrical outputs of the piezoelectric nanogenerator. Three types of flexible polyvinylidene fluoride (PVDF) piezoelectric nanogenerator were fabricated based on well-aligned nanofibers, random oriented nanofibers and thick films. The electrical output performance of PVDF nanogenerators is systematically investigated by the influence of microstructures. The aligned nanofiber arrays exhibit highly consistent orientation, uniform diameter, and a smooth surface, which possesses the highest fraction of the polar crystalline β phase compared with the random-oriented nanofibers and thick films. The highly aligned structure and the large fraction of the polar β phase enhanced the output performance of the well-aligned nanofiber nanogenerator. The highest output voltage of 14 V and a short-circuit current of 1.22 µA were achieved under tapping mode of 10 N at 2.5 Hz, showing the potential application in flexible electronic devices. These new results shed some light on the design of the flexible piezoelectric polymer-based nanogenerators.
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spelling pubmed-85125232021-10-14 Microstructure Dependence of Output Performance in Flexible PVDF Piezoelectric Nanogenerators Jiang, Yijing Deng, Yongju Qi, Hongyan Polymers (Basel) Article Flexible piezoelectric nanogenerators have attracted great attention due to their ability to convert ambient mechanical energy into electrical energy for low-power wearable electronic devices. Controlling the microstructure of the flexible piezoelectric materials is a potential strategy to enhance the electrical outputs of the piezoelectric nanogenerator. Three types of flexible polyvinylidene fluoride (PVDF) piezoelectric nanogenerator were fabricated based on well-aligned nanofibers, random oriented nanofibers and thick films. The electrical output performance of PVDF nanogenerators is systematically investigated by the influence of microstructures. The aligned nanofiber arrays exhibit highly consistent orientation, uniform diameter, and a smooth surface, which possesses the highest fraction of the polar crystalline β phase compared with the random-oriented nanofibers and thick films. The highly aligned structure and the large fraction of the polar β phase enhanced the output performance of the well-aligned nanofiber nanogenerator. The highest output voltage of 14 V and a short-circuit current of 1.22 µA were achieved under tapping mode of 10 N at 2.5 Hz, showing the potential application in flexible electronic devices. These new results shed some light on the design of the flexible piezoelectric polymer-based nanogenerators. MDPI 2021-09-24 /pmc/articles/PMC8512523/ /pubmed/34641066 http://dx.doi.org/10.3390/polym13193252 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Jiang, Yijing
Deng, Yongju
Qi, Hongyan
Microstructure Dependence of Output Performance in Flexible PVDF Piezoelectric Nanogenerators
title Microstructure Dependence of Output Performance in Flexible PVDF Piezoelectric Nanogenerators
title_full Microstructure Dependence of Output Performance in Flexible PVDF Piezoelectric Nanogenerators
title_fullStr Microstructure Dependence of Output Performance in Flexible PVDF Piezoelectric Nanogenerators
title_full_unstemmed Microstructure Dependence of Output Performance in Flexible PVDF Piezoelectric Nanogenerators
title_short Microstructure Dependence of Output Performance in Flexible PVDF Piezoelectric Nanogenerators
title_sort microstructure dependence of output performance in flexible pvdf piezoelectric nanogenerators
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8512523/
https://www.ncbi.nlm.nih.gov/pubmed/34641066
http://dx.doi.org/10.3390/polym13193252
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