Self-powered wearable keyboard with fabric based triboelectric nanogenerator

Jeon, Seungwon; Park, Sang-Jae; Kim, Weon‐Guk; Tcho, Il‐Woong; Jin, Ik-Kyeong; Han, Joon‐Kyu; Kim, Daewon; Choi, Yang‐Kyu

doi:10.1016/j.nanoen.2018.09.024

Cited by 82 publications

(46 citation statements)

References 31 publications

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“…By combing two or more different materials, hybrid conductive fillers can make full use of their merits and meanwhile compensate for the shortcomings of each material . Hybrid conductive fillers have also been widely reported, such as PPy/CNT, Ag NWs/CNT, G/PEDOT:PSS, PANI/CNT, PEDOT:PSS/Ag NWs, CNT/G, and so on. Hybrid conductive fillers with obvious synergistic effect have been proved as an effective method to enhance the electrical conductivity and mechanical properties that have more potential applications in flexible and wearable electronics.…”

Section: Smart Textilesmentioning

confidence: 99%

“…In order to protect fabric electrode as well as prevent charges leakage, conductive fabric is usually sandwiched between two insulating fabrics. For example, an all‐fabric‐based TENG as a wearable keyboard was designed by placing a commercial Ni coated fabric between a top wool fabric cover and a bottom cotton fabric substrate . Fabric substrates with dense structure and large specific area provide an excellent attachment platform for functional materials.…”

Section: Triboelectric Nanogeneratorsmentioning

confidence: 99%

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Fiber/Fabric‐Based Piezoelectric and Triboelectric Nanogenerators for Flexible/Stretchable and Wearable Electronics and Artificial Intelligence

2019

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fields is breaking out, such as the Internet of Things (IoTs), big data, humanoid robotics, and artificial intelligence (AI). Nowadays, the rapid advancement of these functional electronic devices is transforming the way people communicate with each other and with their surroundings, which has integrated our world into an intelligent information network. Owing to that no electronics works without electricity, the processes of human informatization and intelligence depend on broad energy supplies and powerful power supports. In other words, electric power can be regarded as the flowing blood that keeps every components of the current society running normally and healthily. However, with the rapid consumption of conventional fossil fuels as well as the growing voice of environmental protection, the current energy structure and its supply status are facing unprecedented challenges. On the one hand, the overwhelming energy crisis and ecological deterioration have become huge bottlenecks restricting socioeconomic development.[1] Some serious situations may even worsen to the root of interstate interest conflicts or the disaster that threatens the survival of mankind. In this case, the transform of energy structure from scarce, pollution-prone, and irreproducible mineral resources to abundant, environmentally friendly, and renewable green energies is desperately required. On the other hand, the traditional centralized, immobile, and ordered energy supply patterns based on power plants are incompatible with the present development of functional electronics associated with individual person, which follows a general trend of miniaturization, portability, and low power. As the information age is coming, billions of things must be connected with sensors for various measurements, perceptions, controls, and data transmissions. [2] These mobile, human-oriented, randomly and massively distributed sensing networks also require the corresponding matched power supply system. Therefore, it turns out that the unreasonable energy structures as well as the mismatched supply pattern lead to the current development dilemma.Portable power supplies and self-powered systems are the most promising solutions for the above straits. For wearable power sources, one of the compromises is to choose small-size Integration of advanced nanogenerator technology with conventional textile processes fosters the emergence of textile-based nanogenerators (NGs), which will inevitably promote the rapid development and widespread applications of next-generation wearable electronics and multifaceted artificial intelligence systems. NGs endow smart textiles with mechanical energy harvesting and multifunctional self-powered sensing capabilities, while textiles provide a versatile flexible design carrier and extensive wearable application platform for their development. However, due to the lack of an effective interactive platform and communication channel between researchers specializing in NGs and those good at textiles, it is rather difficult to achieve fiber...

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Section: Smart Textilesmentioning

confidence: 99%

Section: Triboelectric Nanogeneratorsmentioning

confidence: 99%

Fiber/Fabric‐Based Piezoelectric and Triboelectric Nanogenerators for Flexible/Stretchable and Wearable Electronics and Artificial Intelligence

2019

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“…In the era of the Internet of Things (IoTs), sensors, portable electronics, wearable devices, and wireless transport systems are increasing the demand for renewable and green energy supplies . Triboelectric nanogenerators (TENGs) have been actively investigated and extensively developed, aiming for efficiently converting environmental mechanical energy into electricity for powering so‐called self‐powered sensors or systems . However, some challenges, such as the large internal resistance, the low frictional efficiency, and material inefficiency for losing/gaining electrons, still remain to be overcome before current TENGs can be widely put into practical applications .…”

Section: Comparison Of Various Teng Peng and Tpngsmentioning

confidence: 99%

“Self‐Matched” Tribo/Piezoelectric Nanogenerators Using Vapor‐Induced Phase‐Separated Poly(vinylidene fluoride) and Recombinant Spider Silk

Huang

Zhang

et al. 2020

Advanced Materials

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Flexible biocompatible mechanical energy harvesters are drawing increasing interest because of their high energy‐harvesting efficiency for powering wearable/implantable devices. Here, a type of “self‐matched” tribo‐piezoelectric nanogenerators composed of genetically engineered recombinant spider silk protein and piezoelectric poly(vinylidene fluoride) (PVDF)‐decorated poly(ethylene terephthalate) (PET) layers is reported. The PET layer serves as a shared structure and electrification layer for both piezoelectric and triboelectric nanogenerators. Importantly, the PVDF generates a strong piezo‐potential that modifies the surface potential of the PET layer to match the electron‐transfer direction of the spider silk during triboelectrification. A “vapor‐induced phase‐separation” process is developed to enhance the piezoelectric performance in a facile and “green” roll‐to‐roll manufacturing fashion. The devices show exceptional output performance and energy transformation efficiency among currently existing energy harvesters of similar sizes and exhibit the potential for large‐scale fabrication and various implantable/wearable applications.

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“…In general, there are two routes to achieve the textile TENGs, the first one is fabricating the TENGs based on yarns, threads, and belts, followed by weaving those units into textile devices to improve the applicability [67][68][69][70][71][72][73][74][75][76][77][78][79][80][81][82][83][84][85]. The second way is realizing TENGs by in situ functionalization directly on the off-the-shelf textiles that were woven by synthetic or natural fibers/yarns [86][87][88][89][90][91][92][93][94][95][96][97][98][99][100]. In the following section, we summarize the progress on textile TENGs that were realized by the two routes and compare their advantages and disadvantages in materials, processing, and performances.…”

Section: Textile-based Tengsmentioning

confidence: 99%

“…These concerns could be addressed by the second route of in situ functional finishing. A lot of work has been carried out by coating various triboelectric materials and conductive materials on the textiles, there is no limitation on the dimension of textile, promising the scalable process for self-powered wearable systems [86][87][88][89][90][91][92][93][94][95][96][97][98][99][100]. In the following section, we summarize the progress on triboelectric textiles fabricated by in situ functional finishing, such as various coating methods, deposition, reactive ion etching (RIE), and chemical modification, and we compare the advantages of different processes on the comprehensive properties of textile TENGs, including the triboelectric output, washability, durability, and comfort level as well as wearability.…”

Section: Textile Tengs Fabricated By In Situ Functional Finishingmentioning

confidence: 99%

Progress on wearable triboelectric nanogenerators in shapes of fiber, yarn, and textile

Xiong

Lee

2019

Science and Technology of Advanced Materials

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Textile has been known for thousands of years for its ease of use, comfort, and wear resistance, which resulted in a wide range of applications in garments and industry. More recently, textile emerges as a promising substrate for self-powered wearable power sources that are desired in wearable electronics. Important progress has been attained in the exploitation of wearable triboelectric nanogenerators (TENGs) in shapes of fiber, yarn, and textile. Along with the effective integration of other devices such as supercapacitor, lithium battery, and solar cell, their feasibility for realizing self-charging wearable systems has been proven. In this review, according to the manufacturing process of traditional textiles starting from fibers, twisting into yarns, and weaving into textiles, we summarize the progress on wearable TENGs in shapes of fiber, yarn, and textile. We explicitly discuss the design strategies, configurations, working mechanism, performances, and compare the merits of each type of TENGs. Finally, we present the perspectives, existing challenges and possible routes for future design and development of triboelectric textiles.

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Self-powered wearable keyboard with fabric based triboelectric nanogenerator

Cited by 82 publications

References 31 publications

Fiber/Fabric‐Based Piezoelectric and Triboelectric Nanogenerators for Flexible/Stretchable and Wearable Electronics and Artificial Intelligence

Fiber/Fabric‐Based Piezoelectric and Triboelectric Nanogenerators for Flexible/Stretchable and Wearable Electronics and Artificial Intelligence

“Self‐Matched” Tribo/Piezoelectric Nanogenerators Using Vapor‐Induced Phase‐Separated Poly(vinylidene fluoride) and Recombinant Spider Silk

Progress on wearable triboelectric nanogenerators in shapes of fiber, yarn, and textile

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