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Flexible Two-ply Piezoelectric Yarn Energy Harvester

Author(s): Hyeon Jun Sim, Changsoon Choi, Chang Jun Lee, Youn Tae Kim, Seon Jeong Kim.

Graphical Abstract:


Abstract:

We developed a flexible two-ply piezoelectric yarn-type generator using an electrospun polyvinylidenefluorideco- trifluoroethylene (PVDF–TrFE) mat and a commercially available silver-coated nylon fiber. By rolling the silvercoated nylon fiber into the electrospun PVDF–TrFE mat as the inner electrode, the two-dimensional piezoelectric PVDF– TrFE mat was easily transformed into a one-dimensional fiber. Then silver-coated nylon fiber rolled in PVDF–TrFE was plied with another similar fiber to make a flexible two-ply piezoelectric yarn. The overall fabrication processes of the flexible two-ply piezoelectric yarn are simple and have a high application potential. The flexible two-ply piezoelectric yarn can generate up to 0.7 V in compression and 0.55 V in tension. The yarn retained the piezoelectric performance in various shapes, such as a sewn structure. In addition, the piezoelectric performance was sensitive to velocity and pressure. The flexible two-ply piezoelectric yarn has potential applications as a human motion sensor, as a building block of energy- harvesting textiles, and in self-powered biomedical applications.

Keywords: Energy harvester, Flexible, Piezoelectric, Two-ply, Wearable, Yarn.

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Article Details

VOLUME: 11
ISSUE: 4
Year: 2015
Page: [539 - 544]
Pages: 6
DOI: 10.2174/1573413711666150225231434
Price: $58