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Baik, Jeong Min
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Boosted output performance of triboelectric nanogenerator via electric double layer effect

Author(s)
Chun, JinsungYe, Hyeong UkLee, Jae WonChoi, DukhyunKang, Chong-YunKim, Sang-WooWang, Zhong LinBaik, Jeong Min
Issued Date
2016-10
DOI
10.1038/ncomms12985
URI
https://scholarworks.unist.ac.kr/handle/201301/20625
Fulltext
http://www.nature.com/articles/ncomms12985
Citation
NATURE COMMUNICATIONS, v.7, pp.12985
Abstract
For existing triboelectric nanogenerators ( TENGs), it is important to explore unique methods to further enhance the output power under realistic environments to speed up their commercialization. We report here a practical TENG composed of three layers, in which the key layer, an electric double layer, is inserted between a top layer, made of Al/polydimethylsiloxane, and a bottom layer, made of Al. The efficient charge separation in the middle layer, based on Volta's electrophorus, results from sequential contact configuration of the TENG and direct electrical connection of the middle layer to the earth. A sustainable and enhanced output performance of 1.22mA and 46.8 mW cm(-2) under low frequency of 3 Hz is produced, giving over 16-fold enhancement in output power and corresponding to energy conversion efficiency of 22.4%. Finally, a portable power-supplying system, which provides enough d.c. power for charging a smart watch or phone battery, is also successfully developed.
Publisher
NATURE PUBLISHING GROUP
ISSN
2041-1723
Keyword
HARVESTING WIND ENERGYWATER-WAVE ENERGYCONTACT ELECTRIFICATIONSURFACE-CHARGEGENERATORELECTRONICSCONVERSIONVIBRATIONDENSITY

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