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Electron Transfer in Contact Electrification under Different Atmospheres Packaged inside TENG.

Yu Hou1,2, Xuanli Dong1,2, Wei Tang1,2,3

  • 1Center on Nanoenergy Research, School of Physical Science and Technology, Guangxi University, Nanning 530004, China.

Materials (Basel, Switzerland)
|July 29, 2023
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Summary

Atmosphere significantly impacts contact electrification (CE) and triboelectric nanogenerator (TENG) performance. Oxygen-rich environments enhance TENG sensitivity and power density by facilitating electron transfer, offering insights into static electricity management.

Keywords:
TENGatmospherecontact electrificationelectron transferpackage

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Area of Science:

  • Materials Science
  • Physics
  • Electrical Engineering

Background:

  • Contact electrification (CE) is a fundamental physical phenomenon.
  • Limited research exists on atmospheric influence on CE and gas-encapsulated triboelectric nanogenerators (TENGs).

Purpose of the Study:

  • To investigate the impact of gaseous atmosphere on CE.
  • To enhance the performance of TENGs by controlling the internal atmosphere.
  • To elucidate the physical mechanisms of electron transfer influenced by different gases.

Main Methods:

  • Fabrication of an atmosphere-filled TENG (AF-TENG) using vertical contact-separation mode.
  • Encapsulation of five different gas components found in air within the AF-TENG.
  • Comparative analysis of TENG performance under various atmospheric conditions, focusing on oxygen and nitrogen.

Main Results:

  • The oxygen-atmosphere-filled AF-TENG demonstrated significantly higher sensitivity (1.02 V·N⁻¹) and power density (9.63 μW·m⁻²).
  • Performance metrics for the oxygen-filled TENG were 229.03% and 157.81% greater than the nitrogen-filled counterpart.
  • Oxygen's atomic structure, with abundant energy levels, facilitates enhanced electron transfer between materials.

Conclusions:

  • The gaseous atmosphere critically influences CE and TENG performance.
  • Encapsulating specific gases, like oxygen, can substantially improve TENG efficiency.
  • Findings advance the understanding of CE mechanisms and offer potential applications in static electricity control.