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Micromachines 2018, 9(11), 598; https://doi.org/10.3390/mi9110598

A Spherical Hybrid Triboelectric Nanogenerator for Enhanced Water Wave Energy Harvesting

1
Department of Mechanical Engineering, Pohang University of Science and Technology (POSTECH), Pohang 37673, Korea
2
Agency for Defense Development (ADD), Daejeon 34186, Korea
3
Department of Electrical Engineering, Pohang University of Science and Technology (POSTECH), Pohang 37673, Korea
*
Author to whom correspondence should be addressed.
Received: 22 October 2018 / Revised: 10 November 2018 / Accepted: 12 November 2018 / Published: 15 November 2018
(This article belongs to the Special Issue Nanogenerators in Korea)
Full-Text   |   PDF [2182 KB, uploaded 15 November 2018]   |  

Abstract

Water waves are a continuously generated renewable source of energy. However, their random motion and low frequency pose significant challenges for harvesting their energy. Herein, we propose a spherical hybrid triboelectric nanogenerator (SH-TENG) that efficiently harvests the energy of low frequency, random water waves. The SH-TENG converts the kinetic energy of the water wave into solid–solid and solid–liquid triboelectric energy simultaneously using a single electrode. The electrical output of the SH-TENG for six degrees of freedom of motion in water was investigated. Further, in order to demonstrate hybrid energy harvesting from multiple energy sources using a single electrode on the SH-TENG, the charging performance of a capacitor was evaluated. The experimental results indicate that SH-TENGs have great potential for use in self-powered environmental monitoring systems that monitor factors such as water temperature, water wave height, and pollution levels in oceans. View Full-Text
Keywords: triboelectric nanogenerator; energy harvesting; hybrid energy; water wave energy triboelectric nanogenerator; energy harvesting; hybrid energy; water wave energy
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Lee, K.; Lee, J.-W.; Kim, K.; Yoo, D.; Kim, D.S.; Hwang, W.; Song, I.; Sim, J.-Y. A Spherical Hybrid Triboelectric Nanogenerator for Enhanced Water Wave Energy Harvesting. Micromachines 2018, 9, 598.

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