Advanced Energy Materials
Advanced Energy Materials
3 years ago

Hourglass Triboelectric Nanogenerator as a “Direct Current” Power Source

Hourglass Triboelectric Nanogenerator as a “Direct Current” Power Source
Bao Dong Chen, Chang Bao Han, Zhen Liang Gao, Tao Jiang, Guang Qin Gu, Chuan He, Zhong Lin Wang
Hourglass, or sandglass, is known for centuries to record the passage of time. Here, an hourglass triboelectric nanogenerator (HG-TENG) is reported as a power source by harnessing the kinetic energy of falling particles. By employing the geometry of an hourglass and replacing the sand with a mixture of polytetrafluoroethylene (PTFE) pellets and Al balls, the HG-TENG delivers a train of electrical pulses of the same sign without a rectifier bridge. When the volume ratio of the PTFE pellets to the Al balls is 1:1, the HG-TENG is able to light up 160 commercial light emitting diodes intermittently for 18 s. Furthermore, it is demonstrated that the HG-TENG can also serve as a self-powered UV counterfeit detector. An hourglass triboelectric nanogenerator harnesses the kinetic energy of falling polytetrafluoroethylene pellets and Al balls and delivers a train of electrical pulses of the same sign without a rectifier bridge. It is able to light up 160 commercial light emitting diodes intermittently for 18 s. Furthermore, it can also serve as a self-powered UV counterfeit detector.

Publisher URL: http://onlinelibrary.wiley.com/resolve/doi

DOI: 10.1002/aenm.201700644

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