A large piezoelectric response in highly-aligned electrospun poly(vinylidene fluoride/trifluoroethylene) nanofiber webs for wearable energy harvesting. (8th October 2020)

• Record Type: Journal Article
• Authors: Barique, Mohammad A; Neo, Yoichiro; Noyori, Masaji; Aprila, Lia; Asai, Masaya; Mimura, Hidenori
• Is Part Of: Nanotechnology. Volume 32:Number 1(2021)
• Publication Date: 2020-10-08
• Subjects: electrospinning -- piezoelectric nanofiber -- output voltage -- short-circuit current -- surface charge -- Poly(vinylidene fluoride/trifluoroethylene); Nanotechnology -- Periodicals; Nanotechnology -- Periodicals; Nanotechnology; Publications périodiques; Nanotechnologies; Periodicals; 620.5
• DOI: 10.1088/1361-6528/abb5d3
• Languages: English
• ISSNs: 0957-4484

Abstract

Abstract: In this study, highly-aligned and molecularly oriented poly(vinylidene fluoride/trifluoroethylene) [P(VDF/TrFE)] nanofiber webs were fabricated and their piezoelectric response was investigated. Using systematic post-treatments under appropriate conditions, a significant enhancement of the piezoelectric response in the P(VDF/TrFE) nanofiber webs was observed for the first time. The high-quality nanofibers exhibited a large output voltage of 0.4 V. The short-circuit current of post-treated nanofibers was found to be 731.25 μ A, which increased about 330 times and the surface electric charge density was found to be 0.64 nC cm −2, which was about 2.7 times higher than those of the as-spun nanofibers. The large enhancement of piezoelectric response of the nanofibers is attributed to the additional stretching, annealing and poling of the as-spun nanofibers under the appropriate post-treatment conditions. The results highlight the potential of the high-quality P(VDF/TrFE) nanofibers to be used as wearable piezoelectric energy harvesters and other flexible self-powered portable devices.