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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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 |
work_keys_str_mv |
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1724612232766029824 |