Comb-structured triboelectric nanogenerators for multi-directional energy scavenging from human movements

A triboelectric nanogenerator (TENG) is an emerging energy harvesting technology utilizing multi-directional, wasted mechanical energies stemming from vibrations, winds, waves, body movements, etc. In this study, we report a comb-structured TENG (CTENG) capable of effectively scavenging multi-direct...

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Main Authors: Hee Jae Hwang, Yeonseok Jung, Kyungwho Choi, Dongseob Kim, Jinhyoung Park, Dukhyun Choi
Format: Article
Language:English
Published: Taylor & Francis Group 2019-12-01
Series:Science and Technology of Advanced Materials
Subjects:
Online Access:http://dx.doi.org/10.1080/14686996.2019.1630856
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spelling doaj-85b263339db94eec99bcc97035e9d0f82020-11-25T03:21:56ZengTaylor & Francis GroupScience and Technology of Advanced Materials1468-69961878-55142019-12-0120172573210.1080/14686996.2019.16308561630856Comb-structured triboelectric nanogenerators for multi-directional energy scavenging from human movementsHee Jae Hwang0Yeonseok Jung1Kyungwho Choi2Dongseob Kim3Jinhyoung Park4Dukhyun Choi5Kyung Hee UniversityKyung Hee UniversityKorea Railroad Research InstituteAircraft System Technology GroupMechatronics Technology Convergence R&D GroupKyung Hee UniversityA triboelectric nanogenerator (TENG) is an emerging energy harvesting technology utilizing multi-directional, wasted mechanical energies stemming from vibrations, winds, waves, body movements, etc. In this study, we report a comb-structured TENG (CTENG) capable of effectively scavenging multi-directional motions from human movements, which include walking, jumping, and running. By attaching CTENG to a person’s calf, we obtain a root-mean-square (RMS) power value of 5.28 μW (i.e. 13.12 V and 0.4 μA) for 1 s during mild running action (~5 m/s), which is sufficient for powering 10 light emitting diodes (LEDs). We integrate a CTENG with a simple hand-held pendulum (HHP) system with a natural frequency of 5.5 Hz. The natural frequency and input energy of our HHP system can be easily controlled by changing the holder mass and initial bending displacement, thus producing different output behaviors for the CTENG. Under the optimal HHP-based CTENG system design, the maximum output reaches 116 V at 6.5 μA under 0.1 kg mass and 4 cm bending displacement conditions. The corresponding output energy is 52.7 μJ for an operation time of 10.8 s. Our HHP-CTENG system can sufficiently power 45 LEDs and shows different output performances by varying the driving velocity of a vehicle, thus demonstrating the possibility for a self-powered velocity monitoring system.http://dx.doi.org/10.1080/14686996.2019.1630856triboelectric nanogeneratorcomb structuremulti-directionalhand-held pendulumvelocity monitoring
collection DOAJ
language English
format Article
sources DOAJ
author Hee Jae Hwang
Yeonseok Jung
Kyungwho Choi
Dongseob Kim
Jinhyoung Park
Dukhyun Choi
spellingShingle Hee Jae Hwang
Yeonseok Jung
Kyungwho Choi
Dongseob Kim
Jinhyoung Park
Dukhyun Choi
Comb-structured triboelectric nanogenerators for multi-directional energy scavenging from human movements
Science and Technology of Advanced Materials
triboelectric nanogenerator
comb structure
multi-directional
hand-held pendulum
velocity monitoring
author_facet Hee Jae Hwang
Yeonseok Jung
Kyungwho Choi
Dongseob Kim
Jinhyoung Park
Dukhyun Choi
author_sort Hee Jae Hwang
title Comb-structured triboelectric nanogenerators for multi-directional energy scavenging from human movements
title_short Comb-structured triboelectric nanogenerators for multi-directional energy scavenging from human movements
title_full Comb-structured triboelectric nanogenerators for multi-directional energy scavenging from human movements
title_fullStr Comb-structured triboelectric nanogenerators for multi-directional energy scavenging from human movements
title_full_unstemmed Comb-structured triboelectric nanogenerators for multi-directional energy scavenging from human movements
title_sort comb-structured triboelectric nanogenerators for multi-directional energy scavenging from human movements
publisher Taylor & Francis Group
series Science and Technology of Advanced Materials
issn 1468-6996
1878-5514
publishDate 2019-12-01
description A triboelectric nanogenerator (TENG) is an emerging energy harvesting technology utilizing multi-directional, wasted mechanical energies stemming from vibrations, winds, waves, body movements, etc. In this study, we report a comb-structured TENG (CTENG) capable of effectively scavenging multi-directional motions from human movements, which include walking, jumping, and running. By attaching CTENG to a person’s calf, we obtain a root-mean-square (RMS) power value of 5.28 μW (i.e. 13.12 V and 0.4 μA) for 1 s during mild running action (~5 m/s), which is sufficient for powering 10 light emitting diodes (LEDs). We integrate a CTENG with a simple hand-held pendulum (HHP) system with a natural frequency of 5.5 Hz. The natural frequency and input energy of our HHP system can be easily controlled by changing the holder mass and initial bending displacement, thus producing different output behaviors for the CTENG. Under the optimal HHP-based CTENG system design, the maximum output reaches 116 V at 6.5 μA under 0.1 kg mass and 4 cm bending displacement conditions. The corresponding output energy is 52.7 μJ for an operation time of 10.8 s. Our HHP-CTENG system can sufficiently power 45 LEDs and shows different output performances by varying the driving velocity of a vehicle, thus demonstrating the possibility for a self-powered velocity monitoring system.
topic triboelectric nanogenerator
comb structure
multi-directional
hand-held pendulum
velocity monitoring
url http://dx.doi.org/10.1080/14686996.2019.1630856
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