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; Yunlong Zi

doi:10.1038/s41467-021-25753-7

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

Nat Commun. 2021 Sep 15;12(1):5470. doi: 10.1038/s41467-021-25753-7.

Authors

Hao Wu^{1

2}, Steven Wang², Zuankai Wang³, Yunlong Zi⁴

Affiliations

¹ Department of Mechanical and Automation Engineering, The Chinese University of Hong Kong, Hong Kong, China.
² Department of Mechanical Engineering, City University of Hong Kong, Hong Kong, China.
³ Department of Mechanical Engineering, City University of Hong Kong, Hong Kong, China. zuanwang@cityu.edu.hk.
⁴ Department of Mechanical and Automation Engineering, The Chinese University of Hong Kong, Hong Kong, China. ylzi@cuhk.edu.hk.

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.

Abstract

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