Intrinsically Stretchable Multi-functional Fiber with Energy Harvesting and Strain Sensing Capability

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As future generations of wearable electronics are expected to be directly worn, fiber-based electronics are expected to become increasingly more important in the coming years, as they can be weaved into textiles to provide higher comfort, durability, and integrated multi-functionalities. Herein, we demonstrate an intrinsically stretchable multi-functional hollow fiber capable of harvesting mechanical energy and detecting strain. For energy harvesting, we have utilized a stretchable ferroelectric layer composed of P(VDF-TrFE) in a matrix of elastomer, sandwiched between stretchable electrodes composed of multi-walled carbon nanotubes and PEDOT:PSS. We have demonstrated voltage and current generation under stretching and normal pressure, with output voltage and current as high as 1.2 V and 10 nA, respectively. Furthermore, the hollow architecture enabled the harvesting of pressure coming from internal liquid flow, adding another dimension of harvesting mechanical energy. The stretchable electrodes were used as strain sensors, which exhibited high gauge factor of 80–177 in the 0–50% strain range, along with low hysteresis and durability. These features render our multi-functional fiber highly suitable for wearable electronic applications in the near future.
Publisher
ELSEVIER SCIENCE BV
Issue Date
2019-01
Language
English
Article Type
Article
Citation

NANO ENERGY, v.55, pp.348 - 353

ISSN
2211-2855
DOI
10.1016/j.nanoen.2018.10.071
URI
http://hdl.handle.net/10203/249995
Appears in Collection
ME-Journal Papers(저널논문)MS-Journal Papers(저널논문)
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