Multifunctional Woven Structure Operating as Triboelectric Energy Harvester, Capacitive Tactile Sensor Array, and Piezoresistive Strain Sensor Array

Kim, Kihong; Song, Giyoung; Park, Cheolmin; Yun, Kwang-Seok

doi:10.3390/s17112582

Cited by 56 publications

(33 citation statements)

References 48 publications

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“…Four basic energy harvesting modes of TEHs are vertical contact-separation (CS) mode, lateral-sliding (LS) mode, single-electrode (SE) mode, and freestanding triboelectric-layer (FT) mode [ 21 ]. Examples of studies on characterization and optimization of the electrical performance of triboelectric and electrode materials, device fabrication, and environment condition control are the following studies [ 22 , 23 , 24 , 25 , 26 , 27 ]. In addition, Cun Xin Lu et al [ 28 ] investigated the temperature effect on the triboelectric electrical output of a single-electrode mode and reported that, at a low temperature, the TEH was able to generate high electrical output, and vice versa.…”

Section: Introductionmentioning

confidence: 99%

Impact-Driven Energy Harvesting: Piezoelectric Versus Triboelectric Energy Harvesters

Thainiramit

Yingyong

Isarakorn

2020

Sensors

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This work investigated the mechanical and electrical behaviors of piezoelectric and triboelectric energy harvesters (PEHs and TEHs, respectively) as potential devices for harvesting impact-driven energy. PEH and TEH test benches were designed and developed, aiming at harvesting low-frequency mechanical vibration generated by human activities, for example, a floor-tile energy harvester actuated by human footsteps. The electrical performance and behavior of these energy harvesters were evaluated and compared in terms of absolute energy and power densities that they provided and in terms of these energy and power densities normalized to unit material cost. Several aspects related to the design and development of PEHs and TEHs as the energy harvesting devices were investigated, covering the following topics: construction and mechanism of the energy harvesters; electrical characteristics of the fabricated piezoelectric and triboelectric materials; and characterization of the energy harvesters. At a 4 mm gap width between the cover plate and the stopper (the mechanical actuation components of both energy harvesters) and a cover plate pressing frequency of 2 Hz, PEH generated 27.64 mW, 1.90 mA, and 14.39 V across an optimal resistive load of 7.50 kΩ, while TEH generated 1.52 mW, 8.54 µA, and 177.91 V across an optimal resistive load of 21 MΩ. The power and energy densities of PEH (4.57 mW/cm3 and 475.13 µJ/cm3) were higher than those of TEH (0.50 mW/cm3, and 21.55 µJ/cm3). However, when the material cost is taken into account, TEH provided higher power and energy densities per unit cost. Hence, it has good potential for upscaling, and is considered well worth the investment. The advantages and disadvantages of PEH and TEH are also highlighted as main design factors.

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Section: Introductionmentioning

confidence: 99%

Impact-Driven Energy Harvesting: Piezoelectric Versus Triboelectric Energy Harvesters

Thainiramit

Yingyong

Isarakorn

2020

Sensors

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“…Furthermore, FBECDs can directly produce electrical signals in response to mechanical force or a heat gradient, which holds great potential for the realization of a self‐powered sensing system to detect the actions or temperature of human activities . Zhong et al introduced an active fiber‐based strain sensor (FBSS) based on the electrostatic effect.…”

Section: Device Designmentioning

confidence: 99%

Fiber‐Based Energy Conversion Devices for Human‐Body Energy Harvesting

et al. 2019

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body is actually a tremendous storehouse of energy that is generated from body heat and motion. [15][16][17][18][19] Power generation from breathing, heating, blood transport, arm motion, typing, and walking could reach to over 100 W for a 68 kg adult's daily activities (Figure 1). [20] Thus, converting 1% of power from the human body may be enough to support the work of most portable electronics.In the past two decades, researchers have developed several energy conversion devices based on piezoelectricity, electrostaticity, triboelectricity, or thermoelectricity that can directly harvest the mechanical or thermal energy and convert it into electric energy (these conversion devices are so-called nanogenerators (NGs)). [21][22][23][24][25] The first nanogenerator (NG) based on ZnO was invented by Prof. Wang in 2006; after that, various NGs were developed to harvest the mechanical or thermal energy with the output performance increasing gradually. [26] These NGs are easy-to-construct flexible devices since most materials for these devices are polymers and nanomaterials. Generally, the flexible devices assembled by film materials can be stretchable and bendable in one direction. But their lack of air-permeability, poor 3D deformation, and low damage tolerance limit their application, especially for wearable electronics. Therefore, fiberbased energy conversion devices have been designed. [27] These fiber-based devices can also be knitted to yarn or fabric in the clothing system to build up a large area electronic system. [28,29] The energy generation and internal charging can be realized by means of a self-powered system that harvests the energy from natural sources around the human body to sustain the wearable electronics. [30][31][32] The search for functional materials that possess good conversion efficiency, as well as great mechanical and environmental stability, combined with a novel device design might push these devices to meet the requirement of a practical application. In the past decade, numerous contributions have been offered to improve the performance of fiber-based energy conversion devices (FBECD) and extend its application. This review specifically summarizes FBECD with different energy conversion mechanisms including piezoelectricity, electrostaticity, triboelectricity, and thermoelectricity in recent processes (Figure 2). The functional materials, fiber fabrication techniques, and device design strategies for different classes of FBECDs are covered in the article. We also introduce an overview of the fiber-based self-powered system and sensors and Following the rapid development of lightweight and flexible smart electronic products, providing energy for these electronics has become a hot research topic. The human body produces considerable mechanical and thermal energy during daily activities, which could be used to power most wearable electronics. In this context, fiber-based energy conversion devices (FBECD) are proposed as candidates for effective conversion of human-body energy into electricity...

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“…A number of textile-based TENGs were presented, integrating triboelectric energy harvesting and wearable energy storage components, attempting to minimize this issue ( Dong et al., 2017b ; Pu et al., 2016a , 2015 ; Song et al., 2017 ; Wang et al., 2015a , 2015b , 2015c , 2015d ; Wen et al., 2016 ; Yang et al., 2018b ). Furthermore, harvesting energy from multiple sources through hybrid triboelectric/piezoelectric ( Guo et al., 2018 ; Kim et al., 2017 ), triboelectric/solar cell ( Chen et al., 2016 ; Wen et al., 2016 ), triboelectric/thermoelectric, and triboelectric/solar cell/energy storage ( Wen et al., 2016 ) structures was demonstrated, which would enable self-powered wearable energy systems that efficiently utilize multiple ambient energy sources with a high degree of autonomy. There have been significant improvements in theoretical modeling and optimization methods supported by the DDEF model, TENG impedance plot, V-Q plots, etc., which can be effectively used to further improve the textile-based TENG performances.…”

Section: Testing Of Textile-based Tengsmentioning

confidence: 99%

Towards Truly Wearable Systems: Optimizing and Scaling Up Wearable Triboelectric Nanogenerators

2020

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Summary Triboelectric nanogenerator (TENG) is an upcoming technology to harvest energy from ambient movements. A major focus herein is harvesting energy from human movements through wearable TENGs, which are constructed by integrating nanogenerators into clothing or accessories. Textile-based TENGs, which include fiber, yarn, and fabric-based TENG structures, account for the majority of wearable TENGs, with many designs and applications demonstrated recently. This calls for a comprehensive analysis of textile-based TENG technology, and how the state-of-the-art device optimization concepts can be deployed to construct them efficiently. Concurrently, how advanced engineering concepts and industrial manufacturing techniques, which are bound with fiber, yarn, and fabric-related developments, can be applied into the TENG context for their output enhancement is still under investigation. Herein, we fill this vital gap by analyzing the state-of-the-art developments, upcoming trends, output optimization strategies, scalability, and prospects of the textile-based TENG technology, presenting a textile engineering perspective.

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Multifunctional Woven Structure Operating as Triboelectric Energy Harvester, Capacitive Tactile Sensor Array, and Piezoresistive Strain Sensor Array

Cited by 56 publications

References 48 publications

Impact-Driven Energy Harvesting: Piezoelectric Versus Triboelectric Energy Harvesters

Impact-Driven Energy Harvesting: Piezoelectric Versus Triboelectric Energy Harvesters

Fiber‐Based Energy Conversion Devices for Human‐Body Energy Harvesting

Towards Truly Wearable Systems: Optimizing and Scaling Up Wearable Triboelectric Nanogenerators

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