Large Scale Triboelectric Nanogenerator and Self-Powered Pressure Sensor Array Using Low Cost Roll-to-Roll UV...

Area of Science:

• Materials Science
• Energy Harvesting
• Nanotechnology

Background:

• Triboelectric nanogenerators (TENGs) offer advantages over piezoelectric and electromagnetic harvesters for mechanical energy conversion.
• Current TENG fabrication methods lack scalability, hindering commercialization.
• Developing scalable TENG fabrication is crucial for widespread adoption.

Purpose of the Study:

• To demonstrate a scalable fabrication process for large-scale triboelectric nanogenerators (LS-TENGs).
• To explore the application of LS-TENGs for harvesting energy from human and vehicle motion.
• To develop large-scale triboelectric pressure sensor arrays for various applications.

Main Methods:

• Utilized roll-to-roll ultraviolet embossing to pattern polyethylene terephthalate sheets for LS-TENG fabrication.
• Integrated LS-TENGs into devices for capturing energy from human and vehicle motion.
• Fabricated large-scale triboelectric pressure sensor arrays using the same roll-to-roll technique.

Main Results:

• Achieved a power density of 62.5 mW m(-2) for the LS-TENG.
• Demonstrated a pressure detection sensitivity of 1.33 V kPa(-1) for the large-scale sensor array.
• Successfully fabricated scalable TENGs and sensor arrays.

Conclusions:

• Roll-to-roll ultraviolet embossing provides a scalable and cost-effective fabrication method for TENGs.
• LS-TENGs are suitable for harvesting energy from ambient motion.
• Large-scale triboelectric pressure sensor arrays have potential in motion tracking, posture monitoring, and electronic skin.