Radial-arrayed rotary electrification for high performance triboelectric generator

Guang Zhu, Jun Chen, Tiejun Zhang, Qingshen Jing and Zhong Lin Wang ()
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Guang Zhu: Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences
Jun Chen: School of Materials Science and Engineering, Georgia Institute of Technology
Tiejun Zhang: School of Materials Science and Engineering, Georgia Institute of Technology
Qingshen Jing: School of Materials Science and Engineering, Georgia Institute of Technology
Zhong Lin Wang: Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences

Nature Communications, 2014, vol. 5, issue 1, 1-9

Abstract: Abstract Harvesting mechanical energy is an important route in obtaining cost-effective, clean and sustainable electric energy. Here we report a two-dimensional planar-structured triboelectric generator on the basis of contact electrification. The radial arrays of micro-sized sectors on the contact surfaces enable a high output power of 1.5 W (area power density of 19 mW cm−2) at an efficiency of 24%. The triboelectric generator can effectively harness various ambient motions, including light wind, tap water flow and normal body movement. Through a power management circuit, a triboelectric-generator-based power-supplying system can provide a constant direct-current source for sustainably driving and charging commercial electronics, immediately demonstrating the feasibility of the triboelectric generator as a practical power source. Given exceptional power density, extremely low cost and unique applicability resulting from distinctive mechanism and structure, the triboelectric generator can be applied not only to self-powered electronics but also possibly to power generation at a large scale.

Date: 2014
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DOI: 10.1038/ncomms4426

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