Citation

Zhang B, Chen J, Jin L, Deng W, Zhang L, Zhang H, Zhu M, Yang W, Wang ZL. ACS Nano 2016; 10(6): 6241-6247.

Affiliation

Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences , Beijing, China.

Copyright

(Copyright © 2016, American Chemical Society)

DOI

10.1021/acsnano.6b02384

PMID

27232668

Abstract

Wireless traffic volume detectors play a critical role for measuring the traffic-flow in a real-time for current Intelligent Traffic System. However, as a battery-operated electronic device, regularly replacing battery remains a great challenge, especially in the remote area and wide distribution. Here, we report a self-powered active wireless traffic volume sensor by using a rotating-disk-based hybridized nanogenerator of triboelectric nanogenerator and electromagnetic generator as the sustainable power source. Operated at a rotating rate of 1000 rpm, the device delivered an output power of 17.5 mW, corresponding to a volume power density of 55.7 W/m(3) (Pd = P/V, see Supporting Information for detailed calculation) at a loading resistance of 700 Ω. The hybridized nanogenerator was demonstrated to effectively harvest energy from wind generated by a moving vehicle through the tunnel. And the delivered power is capable of triggering a counter via a wireless transmitter for real-time monitoring the traffic volume in the tunnel. This study further expands the applications of triboelectric nanogenerators for high-performance ambient mechanical energy harvesting and as sustainable power sources for driving wireless traffic volume sensors.

Language: en