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PROJECT TITLE :

A Flexible Piezoelectric-Pyroelectric Hybrid Nanogenerator Based on P(VDF-TrFE) Nanowire Array

ABSTRACT:

The piezoelectric and pyroelectric effects are well known and are widely used for energy harvesting and self-powered sensing systems. This paper presents a high performance piezoelectric-pyroelectric hybrid nanogenerator primarily based on P(VDF-TrFE) nanowire array that's capable of simultaneously harvesting mechanical and thermal energies. The nanowire array was synthesized by nanoimprinting P(VDF-TrFE) polymer into anodic aluminum oxide (AAO). The ferroelectric β crystalline part of the aligned P(VDF-TrFE) nanowires has been demonstrated by Fourier transform infrared spectrum and X-ray diffraction measurements. Beneath periodic mechanical bending, electrical signals are repeatedly generated from the hybrid nanogenerator and therefore the measured piezoelectric output reach 4.0 V/sixty five nA. The cyclic bending-releasing method and impacts of strain rate on the electrical outputs are totally characterised and analyzed. Besides, upon exposure of heat-cool condition with a temperature range of eight K around room temperature, pyroelectric output up to three.a pair of V/fifty two nA was obtained. There's a linear relationship between the output and therefore the temperature distinction across the device. As a result of the quick response time of ninety ms and high detected sensitivity of zero.8 K, the hybrid nanogenerator can also use as a self-powered temperature sensor. Finally, the piezoelectric and pyroelectric output voltages were successfully integrated together to get an enhanced output. These results demonstrate the nice potential of the versatile hybrid nanogenerator for self-powered electronic devices.


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