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Study of Energy Harvesting Performance of Wet-Stretched PVDF Nanofibers

[+] Author Affiliations
Raghid Najjar, Xiao Hu, Vince Beachley, Wei Xue

Rowan University, Glassboro, NJ

Yi Luo

Hangzhou Dianzi University, Hangzhou, China

Paper No. IMECE2016-66642, pp. V06AT08A040; 5 pages
doi:10.1115/IMECE2016-66642
From:
  • ASME 2016 International Mechanical Engineering Congress and Exposition
  • Volume 6A: Energy
  • Phoenix, Arizona, USA, November 11–17, 2016
  • Conference Sponsors: ASME
  • ISBN: 978-0-7918-5058-9
  • Copyright © 2016 by ASME

abstract

An average human body produces a large amount of energy throughout the day. A significant portion of this energy is utilized as mechanical energy. Body movement such as footfalls and arm swings can produce enough energy to power portable electronics using mechanical-to-electrical energy harvesters. These devices should be small, light, portable, and flexible. Polyvinylidene fluoride (PVDF) has shown a high biocompatibility and is a suitable candidate for energy harvesting applications. Moreover, PVDF can be produced in large quantities while still maintaining a low cost. Electrospinning is a common process used to prepare PVDF nanofibers. Here we introduce a novel technique called wet-stretched electrospinning to further increase the amount of energy generated by the PVDF devices. Our initial results show that the wet-stretched nanofibers outperform the regular PVDF nanofibers by up to 12 times under similar conditions. These promising results suggest that the proposed method has great potential to be utilized as a major improvement from the traditional electrospinning process of PVDF. These findings are significant and are especially pertinent to the field of energy harvesters designed for powering medical devices or wearable systems.

Copyright © 2016 by ASME

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