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Search Completed | Title | Multi-layered disk triboelectric nanogenerator for harvesting hydropower
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Text | Multi-layered disk triboelectric nanogenerator for harvesting hydropower | 001
Nano Energy (2014) 6, 129–136
Available online at www.sciencedirect.com
journal homepage: www.elsevier.com/locate/nanoenergy
Multi-layered disk triboelectric nanogenerator for harvesting hydropower
Yannan Xiea,b,1, Sihong Wanga,1, Simiao Niua, Long Lina, Qingshen Jinga, Yuanjie Sua, Zhengyun Wub, Zhong Lin Wanga,c,n
aSchool of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA 30332-0245, United States
bDepartment of Physics, Xiamen University, Xiamen 361005, Fujian, China
cBeijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing, China
Received 13 February 2014; received in revised form 21 March 2014; accepted 25 March 2014 Available online 5 April 2014
Mechanical energy harvesting; Triboelectric nanogenerators; Hydropower; Self-powering technology
New technologies that can scavenge ambient environmental energy have attracted increasing interest in the past decades. Recently, triboelectric nanogenerator (TENG) has been demon- strated as a powerful approach for harvesting various forms of mechanical energies. In this work, a newly designed TENG is demonstrated by coaxially integrating multiple layers disk TENGs into a whole system, which transforms the fluid flow into rotation motion of multiple layers disks and generates a multiplied electrical output. To achieve the effective structural integration and output multiplication, a D-shape shaft is adopted to facilitate the synchronized relative rotation of all the segmentally-structured disk layers and light weight and low stiffness springs are employed to ensure the intimate contact of the tribo-surfaces. With the above design, the nanogenerator delivers an open-circuit voltage up to $ 470 V and a short-circuit current density of 90.6 mA/m2, corresponding to an instantaneous maximum power density of 42.6 W/m2 (2.68 kW/m3) at a rotation speed of 1000 rpm. By combining the TENG with a water turbine, the device can be effectively driven by a water flow from a common household faucet. This technology represents an important advance of TENGs toward practical applications and shows great potential in hydroelectric power and wind power industries.
& 2014 Elsevier Ltd. All rights reserved.
nCorresponding author at: School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta,
GA 30332-0245, United States.
E-mail address: firstname.lastname@example.org (Z.L. Wang). 1These authors contributed equally.
http://dx.doi.org/10.1016/j.nanoen.2014.03.015 2211-2855/& 2014 Elsevier Ltd. All rights reserved.
With the increasing threat of environmental pollution and energy crisis, it is becoming an increasingly urgent necessity to develop novel and efficient technologies for harvesting
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