High Durability Sliding TENG with Enhanced Output Achieved by Capturing Multiple Region Charges for Harvesting Wind...

Area of Science:

• Materials Science
• Energy Harvesting
• Nanotechnology

Background:

• Triboelectric nanogenerators (TENGs) face challenges in electric output and durability.
• Sliding-mode TENGs suffer energy waste due to surface charge dissipation and volume effect leakage.
• Improving TENG performance requires addressing charge dissipation and leakage mechanisms.

Purpose of the Study:

• To design a durable dual output mode TENG (DDO-TENG) for enhanced energy harvesting.
• To capture dissipated charges in surface accumulation areas and inner leakage charges in porous networks.
• To improve the output performance and durability of sliding-mode TENGs.

Main Methods:

• Development of a durable dual output mode TENG (DDO-TENG) incorporating alternating current and direct current output modes.
• Integration of a porous network to capture inner leakage charges.
• Testing of the DDO-TENG for output charge density, durability, and continuous power generation.

Main Results:

• The DDO-TENG achieved an output charge density of 0.847 mC m⁻², 2.39 times higher than single-mode devices.
• Demonstrated strong durability, retaining 95.7% performance after over 271,000 cycles.
• Successfully powered electronics by harvesting wind energy, showcasing practical application potential.

Conclusions:

• The DDO-TENG strategy significantly improves TENG output performance and durability.
• This work offers a viable approach to overcome limitations in TENG technology.
• Expanded applications for TENGs in continuous energy harvesting are demonstrated.