Cylindrical rotating triboelectric nanogenerator

Peng Bai, Guang Zhu, Ying Liu, Jun Chen, Qingshen Jing, Weiqing Yang, Jusheng Ma, Gong Zhang, Zhong Lin Wang

Research output: Journal PublicationArticlepeer-review

208 Citations (Scopus)

Abstract

We demonstrate a cylindrical rotating triboelectric nanogenerator (TENG) based on sliding electrification for harvesting mechanical energy from rotational motion. The rotating TENG is based on a core-shell structure that is made of distinctly different triboelectric materials with alternative strip structures on the surface. The charge transfer is strengthened with the formation of polymer nanoparticles on surfaces. During coaxial rotation, a contact-induced electrification and the relative sliding between the contact surfaces of the core and the shell result in an "in-plane" lateral polarization, which drives the flow of electrons in the external load. A power density of 36.9 W/m2 (short-circuit current of 90 μA and open-circuit voltage of 410 V) has been achieved by a rotating TENG with 8 strip units at a linear rotational velocity of 1.33 m/s (a rotation rate of 1000 r/min). The output can be further enhanced by integrating more strip units and/or applying larger linear rotational velocity. This rotating TENG can be used as a direct power source to drive small electronics, such as LED bulbs. This study proves the possibility to harvest mechanical energy by TENGs from rotational motion, demonstrating its potential for harvesting the flow energy of air or water for applications such as self-powered environmental sensors and wildlife tracking devices.

Original languageEnglish
Pages (from-to)6361-6366
Number of pages6
JournalACS Nano
Volume7
Issue number7
DOIs
Publication statusPublished - 23 Jul 2013
Externally publishedYes

Keywords

  • energy harvesting
  • rotation
  • triboelectric nanogenerators

ASJC Scopus subject areas

  • Materials Science (all)
  • Engineering (all)
  • Physics and Astronomy (all)

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