15_ACSN_24.pdf - Tao Jiang,†,� Li Min Zhang,†,� Xiangyu...

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JIANG ET AL. VOL. XXX NO. XX 000 000 XXXX A C XXXX American Chemical Society Structural Optimization of Triboelectric Nanogenerator for Harvesting Water Wave Energy Tao Jiang, †,§ Li Min Zhang, †,§ Xiangyu Chen, Chang Bao Han, Wei Tang, Chi Zhang, Liang Xu, and Zhong Lin Wang * ,†,‡ Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing 100083, China and School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332-0245, United States. § T.J. and L.M.Z. contributed equally to this work. W ith an increasing consumption of fossil fuels, humans will be threa- tened with serious energy crises. Searching for a new energy source from our ambient environment is of great practical value for the sustainable development of our society. 1 Because of the abundant water resources on the earth, ocean waves are one of the most promising renewable energy sources for large-scope applications. The wave energy exhibits superior advantages over other energy sources; for instance, it has a much less dependence on season, day or night, weather, and temperature condi- tions. 2,3 However, this type of water kinetic energy has rarely been exploited due to the lack of suitable energy scavenging technol- ogies. 4,5 Most demonstrated converters for water waves rely on the electromagnetic generators that face huge challenges such as low turbine e ciency at ocean wave frequency and motion modes, seawater erosion of facilities, heavy weight, and the high cost of equipment maintenance and replacement. 6 ± 8 Therefore, a small-sized, lightweight, cost-e ff ective, and all-in-one approach for converting water wave energy into electricity is greatly desirable as a key to solve the above problems. Recently, triboelectric nanogenerator (TENG) has emerged as a powerful tech- nology for harvesting mechanical energy based on the coupling of triboelectri fi ca- tion and electrostatic induction, with unique merits of high power density, high e ciency, low weight and fabrication cost. 9 ± 14 This technology has been applied to harvest energy from a variety of sources, such as human walking, 15 mechanical vibration, 16 rotation, 17 wind, 18 water waves, 19 ± 21 and so on. Considering that the TENGs have obvious advantages over electromagnetic generators in harvesting energy from low- frequency movement, the TENG technology * Address correspondence to [email protected] Received for review October 9, 2015 and accepted November 14, 2015. Published online 10.1021/acsnano.5b06372 ABSTRACT Ocean waves are one of the most abundant energy sources on earth, but harvesting such energy is rather challenging due to various limitations of current technologies. Recently, networks formed by triboelectric nanogenerator (TENG) have been proposed as a promis- ing technology for harvesting water wave energy. In this work, a basic unit for the TENG network was studied and optimized, which has a box structure composed of walls made of TENG composed of a wavy- structured Cu-Kapton-Cu
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  • Fall '19
  • Energy, Energy conversion, Wind wave, Wave power, TENGs, Tao Jiang

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