Citation

Yang W, Chen J, Zhu G, Yang J, Bai P, Su Y, Jing Q, Cao X, Wang ZL. ACS Nano 2013; 7(12): 11317-11324.

Copyright

(Copyright © 2013, American Chemical Society)

DOI

10.1021/nn405175z

PMID

24180642

Abstract

Triboelectric nanogenerator (TENG), a unique technology for harvesting ambient mechanical energy based on triboelectric effect, has been proven to be a cost-effective, simple and robust approach for self-powered systems. However, a general challenge is that the output current is usually low. Here, we demonstrated a rationally designed TENG with integrated rhombic gridding, which greatly improved the total current output owing to the structurally multiplied unit cells connected in parallel. With the hybridization of both the contact-separation mode and sliding electrification mode among nanowire arrays and nanopores fabricated onto the surfaces of two contact plates, the newly designed TENG produces an open-circuit voltage up to 428 V, and a short-circuit current of 1.395 mA with the peak power density of 30.7 W/m2. Relying on the TENG, a self-powered backpack was developed with a vibration-to-electric energy conversion efficiency up to 10.6%. And it was also demonstrated as a direct power source for instantaneously lighting up 40 commercial light-emitting diodes by harvesting the vibration energy from natural human walking. The newly designed TENG can be a mobile power source for field engineers, explorers, and disaster-relief workers.

Language: en