https://doi.org/10.1051/epjap/2017170288
Regular Article
Flexible piezoelectric nanogenerators based on PVDF-TrFE nanofibers
1
Université Paris-Est, ESYCOM, UPEM,
5 bd. Descartes,
77454
Marne-la-Vallée, France
2
Institute of Nanoscience and Nanotechnology, School of Physical Science and Technology, Lanzhou University,
Lanzhou
730000, PR China
3
Université Paris-Est, ESYCOM, ESIEE Paris,
2 bd. Blaise Pascal,
93162
Noisy-le-Grand, France
* e-mail: yamin.leprince@u-pem.fr
Received:
10
August
2017
Received in final form:
14
November
2017
Accepted:
27
November
2017
Published online: 23 January 2018
In this paper, electrospun piezoelectric PVDF-TrFE nanofibers were used for the fabrication of two types of flexible nanogenerator (NG) devices based on the direct piezoelectric effect, allowing the conversion of mechanical energy into electrical energy. The first one is composed of quite well aligned thin film nanofibers of about 35 μm and the second one is composed of random nanofibers of about 50 μm. The influence of the applied stress and strain rate on the output for both types of NG was studied. It is shown that the pulse peaks generated by NG increase with the applied mechanical strain frequency, the generated output is also proportional to the applied stress amplitude. The first NG loaded in bending mode can generate a maximum voltage of 270 mV. By connecting two devices in series/parallel, the voltage/current value could be multiplied by two. The second NG which was biased in compression mode using a shaker controlled by a force sensor, can generate a potential of about 7 V under 3.6 N applied force.
© EDP Sciences, 2017
