Journal
ACS NANO
Volume 9, Issue 10, Pages 9554-9563Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsnano.5b04396
Keywords
triboelectric nanogenerator; air-flow energy; aero-elastic flutter effect; temperature sensor; self-powered
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Funding
- Beijing Natural Science Foundation [2154059]
- National Natural Science Foundation of China [51472055, 61404034]
- External Cooperation Program of BIC, Chinese Academy of Sciences [121411KYS820150028]
- thousands talents program for the pioneer researcher and his innovation team, China
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Efficient scavenging the kinetic energy from air-flow represents a promising approach for obtaining clean, sustainable electricity. Here, we report an elasto-aerodynamics-driven triboelectric nanogenerator (TENG) based on contact electrification. The reported TENG consists of a Kapton film with two Cu electrodes at each side, fixed on two ends in an acrylic fluid channel. The relationship between the TENG output power density and its fluid channel dimensions is systematically studied. TENG with a fluid channel size of 125 x 10 x 1.6 mm(3) delivers the maximum output power density of about 9 kW/m(3) under a loading resistance of 2.3 M Omega. Aero-elastic flutter effect explains the air-flow induced vibration of Kapton film well. The output power scales nearly linearly with parallel wiring of multiple TENGs. Connecting 10 TENGs in parallel gives an output power of 25 mW, which allows direct powering of a globe light. The TENG is also utilized to scavenge human breath induced air-flow energy to sustainably power a human body temperature sensor.
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