Universal biomechanical energy harvesting from joint movements using a direction-switchable triboelectric nanogenerator

Cho, Sumin; Yun, Yeongcheol; Jang, Sunmin; Ra, Yoonsang; Choi, Jun Hyuk; Hwang, Hee Jae; Choi, Dukhyun; Choi, Dongwhi

doi:10.1016/j.nanoen.2020.104584

Cited by 78 publications

(31 citation statements)

References 32 publications

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“…The active sensor based on TENG also showed many advantages, for instance, extremely high sensitivity, strong adaptability, high flexibility, and good environment friendliness [ 2 , 19 , 20 , 21 , 22 ]. TENG was regarded to be a promising alternative to human mechanical energy harvesting [ 23 , 24 , 25 , 26 , 27 , 28 , 29 , 30 ] and self-powered active sensing [ 31 , 32 , 33 , 34 , 35 , 36 , 37 , 38 , 39 ].…”

Section: Introductionmentioning

confidence: 99%

Smart Wearable Sensors Based on Triboelectric Nanogenerator for Personal Healthcare Monitoring

Wei

et al. 2021

Micromachines

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Accurate monitoring of motion and sleep states is critical for human health assessment, especially for a healthy life, early diagnosis of diseases, and medical care. In this work, a smart wearable sensor (SWS) based on a dual-channel triboelectric nanogenerator was presented for a real-time health monitoring system. The SWS can be worn on wrists, ankles, shoes, or other parts of the body and cloth, converting mechanical triggers into electrical output. By analyzing these signals, the SWS can precisely and constantly monitor and distinguish various motion states, including stepping, walking, running, and jumping. Based on the SWS, a fall-down alarm system and a sleep quality assessment system were constructed to provide personal healthcare monitoring and alert family members or doctors via communication devices. It is important for the healthy growth of the young and special patient groups, as well as for the health monitoring and medical care of the elderly and recovered patients. This work aimed to broaden the paths for remote biological movement status analysis and provide diversified perspectives for true-time and long-term health monitoring, simultaneously.

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Section: Introductionmentioning

confidence: 99%

Smart Wearable Sensors Based on Triboelectric Nanogenerator for Personal Healthcare Monitoring

Wei

et al. 2021

Micromachines

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“…[3][4][5][6][7] In addition to developing superior batteries, energy harvesting technology, which scavenges various types of mechanical energy in the surrounding environment to generate electricity, has recently become an alternative approach to extending the operation time of electronic devices. [8][9][10] The efforts to develop energy harvesters with various working principles, such as piezoelectricity, electromagnetism, photovoltaic effect, thermoelectricity, and electrostatic effect, have enabled us to effectively utilize numerous abandoned energies around us. [11][12][13][14][15][16][17][18][19][20][21] Given that mechanical vibration is one of the most ubiquitous and accessible abandoned energies in daily life, various forms of energy harvesters have been proposed to effectively utilize the mechanical energy transmitted through vibration, that is, vibration energy.…”

Section: Introductionmentioning

confidence: 99%

“…Considering that the operation of the most portable electronic devices is mainly based on the electricity supply from equipped batteries, their lifetime totally depends on the battery capacity; thus, many efforts have been exerted into enhancing the performance of batteries to satisfy the aforementioned aspects 3‐7 . In addition to developing superior batteries, energy harvesting technology, which scavenges various types of mechanical energy in the surrounding environment to generate electricity, has recently become an alternative approach to extending the operation time of electronic devices 8‐10 . The efforts to develop energy harvesters with various working principles, such as piezoelectricity, electromagnetism, photovoltaic effect, thermoelectricity, and electrostatic effect, have enabled us to effectively utilize numerous abandoned energies around us 11‐21 .…”

Section: Introductionmentioning

confidence: 99%

A highly sensitive magnetic configuration‐based triboelectric nanogenerator for multidirectional vibration energy harvesting and self‐powered environmental monitoring

Park

Cho

Yun

et al. 2021

Intl J of Energy Research

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Vibration energy, which is ubiquitous but usually abandoned energy, has been considered as a promising source of energy to be harvested for future power supply to electronics. In this study, we demonstrate the triboelectric nanogenerator (TENG) with a rationally designed bi-axial vibration responsive magnetic configuration (BVMC). Oblique placement of two magnets enables the system to be bi-axially sensitive and the superior response of such BVMC to vibrations is explored for further utilized to harvest multidirectional vibration energy in a single device. Energy harvesting performance of the multidirectional vibration stimuli-responsive TENG, called MS-TENG, under various vibration conditions is investigated. In addition, the further development of the MS-TENG with an additional magnet exhibits the full (threedimensional) vibration energy harvesting ability. The MS-TENG is applied under-the-hood of an automobile where typically abandoned vibrations occur frequently. Turning on the engine on the ignition enables the arrayed MS-TENG to generate a stable output just by engine trembling. Furthermore, the normal human motion-driven vibration is used to charge the commercial capacitor to wirelessly transmit the signal including information of ambient temperature and humidity from the Bluetooth thermo-hygrometer sensor. Consequently, the present TENG with simple but bi-axially sensitive magnetic configuration has a great potential to effectively harvest the multidirectional and low-frequency vibrations around us for future feasible applications.

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“…Furthermore, various portable smart devices are playing major roles in daily life, and these devices require lighter, smaller, or larger capacity power sources. Related research topics such as sensors [9,10], energy harvesting [11][12][13][14], piezoelectric nanogenerators (PENGs) [15][16][17], and triboelectric nanogenerators (TENGs) have received significant attention [18][19][20][21][22][23] because a large amount of available energy is generated by the human movement and clothing friction. The triboelectric effect is caused by the contact between different materials, and it can induce strong electrostatic charges.…”

Section: Introductionmentioning

confidence: 99%

Nano- And Microfiber-Based Fully Fabric Triboelectric Nanogenerator For Wearable Devices

Bae

Song

et al. 2020

Polymers

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The combination of the triboelectric effect and static electricity as a triboelectric nanogenerator (TENG) has been extensively studied. TENGs using nanofibers have advantages such as high surface roughness, porous structure, and ease of production by electrospinning; however, their shortcomings include high-cost, limited yield, and poor mechanical properties. Microfibers are produced on mass scale at low cost; they are solvent-free, their thickness can be easily controlled, and they have relatively better mechanical properties than nanofiber webs. Herein, a nano-and micro-fiber-based TENG (NMF-TENG) was fabricated using a nylon 6 nanofiber mat and melt blown nonwoven polypropylene (PP) as triboelectric layers. Hence, the advantages of nanofibers and microfibers are maintained and mutually complemented. The NMF-TENG was manufactured by electrospinning nylon 6 on the nonwoven PP, and then attaching Ni coated fabric electrodes on the top and bottom of the triboelectric layers. The morphology, porosity, pore size distribution, and fiber diameters of the triboelectric layers were investigated. The triboelectric output performances were confirmed by controlling the pressure area and basis weight of the nonwoven PP. This study proposes a low-cost fabrication process of NMF-TENGs with high air-permeability, durability, and productivity, which makes them applicable to a variety of wearable electronics.

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Universal biomechanical energy harvesting from joint movements using a direction-switchable triboelectric nanogenerator

Cited by 78 publications

References 32 publications

Smart Wearable Sensors Based on Triboelectric Nanogenerator for Personal Healthcare Monitoring

Smart Wearable Sensors Based on Triboelectric Nanogenerator for Personal Healthcare Monitoring

A highly sensitive magnetic configuration‐based triboelectric nanogenerator for multidirectional vibration energy harvesting and self‐powered environmental monitoring

Nano- And Microfiber-Based Fully Fabric Triboelectric Nanogenerator For Wearable Devices

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