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Recently, piezoelectric/triboelectric nanogenerators based on piezoelectric composite materials have been intensively studied to achieve high electrical output performance. In this work, flexible BaTiO3 (BT)/PDMS nanocomposite films with various sizes and concentrations were fabricated and used as the nanogenerators. The influence of dielectric properties on the electrical output of nanogenerators was studied as well as the structure of the composites. The dielectric constant increased from 6.5 to 8 with the concentration of BT nanoparticles and decreased with the frequency from 102 to 106 Hz. Furthermore, the dielectric constant showed 11% decrease with the temperature range from 30 to 180 ℃. It was found that the concentration of BT nanoparticles has promoted the electrical output of nanogenerators. The output voltage and current are all enhanced with the BT nanoparticles, which reached 200 V and 0.24 μA in TENG with 40 wt% BT nanoparticles, respectively. The selected device exhibited the power of 0.16 mW and employed to demonstrate its ability to power wearable/portable electronics by lighting the LEDs.


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Effects of particle size of dielectric fillers on the output performance of piezoelectric and triboelectric nanogenerators

Show Author's information Xiao MENGaZhuo ZHANGaDabin LINa( )Weiguo LIUaShun ZHOUaShaobo GEaYongming SUaChang PENGbLin ZHANGc( )
School of Opto-electronical Engineering, Xi’an Technological University, Xi’an 710021, China
Department of Mechanical and Aerospace Engineering, North Carolina State University, Raleigh, NC 27695, USA
Electronic Materials Research Laboratory, Key Laboratory of the Ministry of Education & International Center for Dielectric Research, School of Electronic Science and Engineering, Faculty of Electronic and Information Engineering, Xi’an Jiaotong University, Xi’an 710049, China

Abstract

Recently, piezoelectric/triboelectric nanogenerators based on piezoelectric composite materials have been intensively studied to achieve high electrical output performance. In this work, flexible BaTiO3 (BT)/PDMS nanocomposite films with various sizes and concentrations were fabricated and used as the nanogenerators. The influence of dielectric properties on the electrical output of nanogenerators was studied as well as the structure of the composites. The dielectric constant increased from 6.5 to 8 with the concentration of BT nanoparticles and decreased with the frequency from 102 to 106 Hz. Furthermore, the dielectric constant showed 11% decrease with the temperature range from 30 to 180 ℃. It was found that the concentration of BT nanoparticles has promoted the electrical output of nanogenerators. The output voltage and current are all enhanced with the BT nanoparticles, which reached 200 V and 0.24 μA in TENG with 40 wt% BT nanoparticles, respectively. The selected device exhibited the power of 0.16 mW and employed to demonstrate its ability to power wearable/portable electronics by lighting the LEDs.

Keywords:

polymer-matrix composites, nano composites, smart materials, electrical properties
Received: 26 January 2021 Revised: 31 March 2021 Accepted: 09 April 2021 Published: 25 May 2021 Issue date: October 2021
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Publication history
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Acknowledgements
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Publication history

Received: 26 January 2021
Revised: 31 March 2021
Accepted: 09 April 2021
Published: 25 May 2021
Issue date: October 2021

Copyright

© The Author(s) 2021

Acknowledgements

The work was supported by the National Natural Science Foundation of China (Grant No. 51972263).

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