Achieving ultrahigh instantaneous power density of 10 MW/m2 by leveraging the opposite-charge-enhanced transistor-like triboelectric nanogenerator (OCT-TENG)

Hao Wu, Steven Wang, Zuankai Wang () and Yunlong Zi ()
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Hao Wu: The Chinese University of Hong Kong
Steven Wang: City University of Hong Kong
Zuankai Wang: City University of Hong Kong
Yunlong Zi: The Chinese University of Hong Kong

Nature Communications, 2021, vol. 12, issue 1, 1-8

Abstract: Abstract Converting various types of ambient mechanical energy into electricity, triboelectric nanogenerator (TENG) has attracted worldwide attention. Despite its ability to reach high open-circuit voltage up to thousands of volts, the power output of TENG is usually meager due to the high output impedance and low charge transfer. Here, leveraging the opposite-charge-enhancement effect and the transistor-like device design, we circumvent these limitations and develop a TENG that is capable of delivering instantaneous power density over 10 MW/m2 at a low frequency of ~ 1 Hz, far beyond that of the previous reports. With such high-power output, 180 W commercial lamps can be lighted by a TENG device. A vehicle bulb containing LEDs rated 30 W is also wirelessly powered and able to illuminate objects further than 0.9 meters away. Our results not only set a record of the high-power output of TENG but also pave the avenues for using TENG to power the broad practical electrical appliances.

Date: 2021
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DOI: 10.1038/s41467-021-25753-7

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