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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.
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.
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.
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