Ingenious use of natural triboelectrification on the human body for versatile applications in walking energy harvesting and body action monitoring

Park, Jae Hyeon; Wu, Chaoxing; Sung, Sihyun; Kim, Tae Whan

doi:10.1016/j.nanoen.2019.01.001

Cited by 40 publications

(14 citation statements)

References 31 publications

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“…Thus, we used PET/ITO/PDMS and stainless steel/MoS 2 films with a rectangular area of 25 mm × 15 mm. This area size is similar to that reported in other TEHs to harvest energy from human body motions [34][35][36][37][38][39].…”

Section: Methodssupporting

confidence: 85%

Triboelectric Energy Harvester Based on Stainless Steel/MoS2 and PET/ITO/PDMS for Potential Smart Healthcare Devices

Gallardo-Vega¹,

López-Lagunes

Nava-Galindo

et al. 2021

Nanomaterials

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The smart healthcare devices connected with the internet of things (IoT) for medical services can obtain physiological data of risk patients and communicate these data in real-time to doctors and hospitals. These devices require power sources with a sufficient lifetime to supply them energy, limiting the conventional electrochemical batteries. Additionally, these batteries may contain toxic materials that damage the health of patients and environment. An alternative solution to gradually substitute these electrochemical batteries is the development of triboelectric energy harvesters (TEHs), which can convert the kinetic energy of ambient into electrical energy. Here, we present the fabrication of a TEH formed by a stainless steel substrate (25 mm × 15 mm) coated with a molybdenum disulfide (MoS2) film as top element and a polydimethylsiloxane (PDMS) film deposited on indium tin oxide coated polyethylene terephthalate substrate (PET/ITO). This TEH has a generated maximum voltage of 2.3 V and maximum output power of 112.55 μW using a load resistance of 47 kΩ and a mechanical vibration to 59.7 Hz. The proposed TEH could be used to power potential smart healthcare devices.

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Section: Methodssupporting

confidence: 85%

Triboelectric Energy Harvester Based on Stainless Steel/MoS2 and PET/ITO/PDMS for Potential Smart Healthcare Devices

Gallardo-Vega¹,

López-Lagunes

Nava-Galindo

et al. 2021

Nanomaterials

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“…The triboelectric nanogenerator (TENG), based on the coupling of triboelectrification and electrostatic induction, is an attractive option for powering portable and wearable electronic devices [4,5]. It converts mechanical energy which is ubiquitous in the environment into electrical energy, and has emerged as a cutting-edge energy harvesting device, by virtue of its environmental friendliness and high output characteristics at low frequencies [6][7][8]. Moreover, the booming development of wearable electronic devices increasingly present miniaturization, portability, and low power consumption; this leads an inevitable trend to develop TENGs with high transparency and stretchability in order to improve the biocompatibility of the device and the comfort to the human wearer for human movement energy harvesting [9,10].…”

Section: Introductionmentioning

confidence: 99%

Double-Network Hydrogel for Stretchable Triboelectric Nanogenerator and Integrated Electroluminescent Skin with Self-Powered Rapid Visual Sensing

Sun

Zhang

et al. 2022

Electronics

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Bio-inspired design plays a very significant role in adapting biological models to technical applications of flexible electronics. The flexible, stretchable, and portable electrode is one of the key technical challenges in the field. Inspired by the responses to mechanical stimuli of natural plants, we designed a highly transparent (over 95%), stretchable (over 1500%), and biocompatible electrode material by using polymerized double-network hydrogel for fabricating a triboelectric nanogenerator (SH-TENG). The SH-TENG can convert tiny mechanical stretching from human movements directly into electrical energy, and is capable of lighting up to 50 LEDs. Benefiting from bio-inspired design, the coplanar, non-overlapping electrode structure breaks through the limitations of conventional electrodes in wearable devices and overcomes the bottleneck of transparent materials. Furthermore, a self-powered raindrop visual sensing system was realized, which can perform quasi-real-time rainfall information monitoring and increase rainfall recognition ability of vehicle automatic driving systems. This study provides a novel strategy for making next-generation stretchable electronic devices and flexible visual sensing systems.

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“…such as ocean waves, [19,20] winds, [21,22] and human-body movements. [23,24] In contrast to driving direct-current electronic devices or electrochemical reactions, TENG can drive ACEL devices easily without rectification circuits due to their AC compatibility. Hence, the integration of TENG and ACEL devices has been shown an effective way to improving the portability and wearability of wearable electronics, which not only effectively harvest the mechanical energy in the environment, but eliminate the energy loss during rectification, providing a more powerful platform for portable electronic devices.…”

Section: Introductionmentioning

confidence: 99%

Flexible Alternating‐Current Electroluminescence Plunging to Below 1 Hz Frequency by Triboelectrification

Sun

Zhu

Yang

et al. 2021

Advanced Optical Materials

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The basic structure of high-field EL is an alternating-current electroluminescent (ACEL) device, where the electrons in the phosphor or injected by the electrode are accelerated in the crystal and collide with the luminescent center to excite or ionize under the applied electric field, and emit radio light when electrons return to the ground state. [11,12] Compared to the traditional LED, the ACEL device has attracted widespread concerns due to its low power consumption, long service life, and excellent mechanical stability, however, the high frequency and unavoidable high driving voltage required for light-emitting limits the wide application in smart wearable field. Meanwhile, with the rapid development of science and technology, electronic devices have shown a trend of miniaturization, low power consumption, and multi-function, thus it is urgent to find a low carbon, environmentally friendly, and clean energy to get rid of the dependence on traditional power sources. Pioneered by Wang and co-workers, nanogenerators based on the coupling of the triboelectrification and electrostatic induction have been developed in the last few years, [13][14][15] ushering a new era of environmental energy collection and utilization. Unlike traditional chemical batteries, which have a limited lifespan and need to be replaced or recharged frequently. [16][17][18] The TENG have shown unprecedented output performance and advantages in harvest randomly distributed or irregular mechanical energy from the environment into electrical energy, Low frequency, portable power source is one of the key challenges for applications of wearable alternating-current electroluminescent (ACEL) device because it typically requiresa working frequency above 500 Hz. Here, an extremely low frequency self-powered ACEL system is proposed, which consists of a vertical contact-separation triboelectric nanogenerator and a self-made flexible ACEL device. It achieves directly-driven electroluminescence phenomenon in real-time by triboelectrification and works completely self-powered through converting kinetic energy of human body into electricity. The working frequency has fallen from 500 to 1 Hz, i.e., the real frequency needed for electroluminescence has dropped 500 times, which is due to the favorable low-frequency high-voltage advantages of the triboelectric nanogenerator. It delivers a stabilized open-circuit voltage of 160 V and a short-circuit current of 6 µA for applied force of 0.1 N. Meanwhile, a strong blueshift is also observed experimentally with the change of working frequency. Furthermore, a self-powered medical protective gown is demonstrated that is real-time monitoring both the temperature and humidity. This work breaking the bottleneck of high-frequency driving, demonstrates the great potential of self-powered ACEL systems in wearable electronics and medical health.

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Ingenious use of natural triboelectrification on the human body for versatile applications in walking energy harvesting and body action monitoring

Cited by 40 publications

References 31 publications

Triboelectric Energy Harvester Based on Stainless Steel/MoS2 and PET/ITO/PDMS for Potential Smart Healthcare Devices

Triboelectric Energy Harvester Based on Stainless Steel/MoS2 and PET/ITO/PDMS for Potential Smart Healthcare Devices

Double-Network Hydrogel for Stretchable Triboelectric Nanogenerator and Integrated Electroluminescent Skin with Self-Powered Rapid Visual Sensing

Flexible Alternating‐Current Electroluminescence Plunging to Below 1 Hz Frequency by Triboelectrification

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