Two-dimensional rotary triboelectric nanogenerator as a portable and wearable power source for electronics

Kuang, Shuang Yang; Chen, Jun; Cheng, Xiao Bei; Zhu, Guang; Wang, Zhong Lin

doi:10.1016/j.nanoen.2015.07.011

Cited by 81 publications

(47 citation statements)

References 24 publications

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“…Wearable electronic devices have attracted extensive research interest for next‐generation artificial intelligence equipment . As a core component of wearable electronic device, the electric power source is significant for future design and function . Compared with traditional power sources, organic–inorganic metal perovskite solar cells (PSCs) have become promising candidates because of their flexible, lightweight features, and excellent photovoltaic efficiencies .…”

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confidence: 99%

Wearable Large‐Scale Perovskite Solar‐Power Source via Nanocellular Scaffold

et al. 2017

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Dramatic advances in perovskite solar cells (PSCs) and the blossoming of wearable electronics have triggered tremendous demands for flexible solar-power sources. However, the fracturing of functional crystalline films and transmittance wastage from flexible substrates are critical challenges to approaching the high-performance PSCs with flexural endurance. In this work, a nanocellular scaffold is introduced to architect a mechanics buffer layer and optics resonant cavity. The nanocellular scaffold releases mechanical stresses during flexural experiences and significantly improves the crystalline quality of the perovskite films. The nanocellular optics resonant cavity optimizes light harvesting and charge transportation of devices. More importantly, these flexible PSCs, which demonstrate excellent performance and mechanical stability, are practically fabricated in modules as a wearable solar-power source. A power conversion efficiency of 12.32% for a flexible large-scale device (polyethylene terephthalate substrate, indium tin oxide-free, 1.01 cm ) is achieved. This ingenious flexible structure will enable a new approach for development of wearable electronics.

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confidence: 99%

Wearable Large‐Scale Perovskite Solar‐Power Source via Nanocellular Scaffold

et al. 2017

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“…Kaung and co‐workers reported a 2D rotary‐TENG (r‐TENG) for harvesting energy generated from the mechanical motions that exist in the surroundings. This r‐TENG effectively harvested energy produced from body motions, such as foot pressure, hand swinging, and foot pedaling, to charge portable electronic devices.…”

Section: Modes Of Operationmentioning

confidence: 99%

“…[8] Thee lectrostatic induction effect, which is used to generatee lectricity,h as crucial improvement in the TENG working. Thet riboelectric charges are induced on the back sideo ft he conductive electrodes.T he inducedc harges on the back side of the electrodes providem obile charges; when these two materials make ar elative motion, they acquires opposite chargesd ue to the consistentf low of induced charges electric potential that is created between these two electrodes.T herefore,m echanical energy is converted into electrical energy.T here are various forms of relative motion in the movement of the TENG to harvest mechanicale nergy are vertical contactm ode, lateral sliding mode, [56][57][58][59][60][61][62][63][64][65] single electrode mode, [66][67][68][69][70][71][72][73][74][75][76][77][78][79][80][81][82][83][84] and free standing triboelectric layer mode, [85][86][87][88][89][90][91][92][93][94][95] as shown in Figure 2.…”

Section: Triboelectric Effectmentioning

confidence: 99%

“…Kaung andc o-workers reported a2 Dr otary-TENG (r-TENG) [86] for harvestinge nergy generated from the mechanical motions that exist in the surroundings.T his r-TENG effectively harvested energy produced from body motions, such as foot pressure,h and swinging,a nd foot pedaling, to charge portable electronic devices.T he planar-structured r-TENG has two radial-arrayed electrodes,w hich are present on identical planes,y ields triboelectric periodic potential, and create current between the electrodes.T he r-TENG consists of mainly two parts,t he rotator and the stator. Ther otator was made of copper in ag roup of 90 radially arrayed sectors.T he stator was composed of three parts:alayer of PMMA as as ubstrate, al ayer of PTFE as an electrification layer, and al ayer of electrodes.W hent he rotator and the stator rotated against each other coaxially,c harge transfer between the contact surfaces took place.P TFE has am uch strongert endency to attract electronsa nd acquire negative triboelectric charges,and rotator acquiredp ositive tribo-electric charges.W hen the r-TENG rotated at the speed of 500 rmin À1 and at 750Hzf requency,i tp roduced constant outputs 0.75 mA as I SC and 200 Va sv oltage.T he authors demonstrated three types of devices,w hich were based on the r-TENG.F irst, the r-TENG was installed in the wheel axis of af itness bicycle and output current andv oltage were found to be 13 mA and 36 V, respectively, at 183 rmin À1 .T his had the ability to drive 20 LEDs simultaneously.S econd, the device was used to harvest the energy generated from human body motions.T he r-TENG was attached to the upper arm, whereas the base was static to the front arm around the wrist.…”

Section: Free-standing Triboelectric Layer Modementioning

confidence: 99%

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Triboelectric Nanogenerators for Mechanical Energy Harvesting

Kaur

Pal

2018

Energy Tech

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Energy is the essential requirement of daily life. Due to the diminution of the energy sources, it is necessary develop devices that can harvest the wasted energy that exists in the ambient environment. To address this, triboelectric nanogenerators (TENGs) have been developed as an innovative paradigm for energy harvesting. They can harvest the various forms of mechanical energy, including vibrations, walking, ocean waves, human motion, rain drops, flowing water, the motion of an automobile, wind, rotational energy, and mechanical triggering. TENGs can combine the contact electrification and electrostatic induction for energy conversion and operate on four fundamental modes for conversion of mechanical energy into electrical energy to power small‐scale electronics including mobile phones and sensors. The electrical outputs obtained from TENGs depend on the friction of materials that are selected from the triboelectric series on the basis of their electronegativity and electropositivity. Here, a comprehensive overview of the fundamentals of nanogenerators, various operating modes of TENGs and the design of devices that include them, and the performance improvement of this recently emerged technology is presented.

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“…Primarily benefiting from their light weight, low cost, multiple structures, extensive material selection, and even great efficiency at low operating frequencies, the novel TENGs have been proven as up‐and‐coming candidates to complementarily solve the energy‐ deficiency issue. These devices can be applied to harvest all kinds of energy, ranging from clean natural energy to ubiquitous mechanical power and from slight acoustic flow to faint heart beats, showing their remarkable compatibility with severe environments and the human body, along with possibilities that still remain to be further explored . The principle of triboelectric devices lies in the coupling effect of contact electrification and electrostatic induction, by which static polarized charges originating from friction bring about inductive charges among electrodes and drive them to transfer between counterparts within contact surface separation to fulfill the transition process from mechanical energy to electricity .…”

Section: Introductionmentioning

confidence: 99%

Progress in Triboelectric Materials: Toward High Performance and Widespread Applications

Zhu

Wang

et al. 2019

Adv Funct Materials

197

128

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Triboelectric phenomena can be observed everywhere; however, they are consistently omitted from applications. Although almost all substances exhibit a triboelectrification effect in daily life, chemists as well as materials scientists have performed extensive investigations in both the aspects of basic science and practical applications to promote the development of triboelectric nanogenerators (TENGs). Here, a detailed survey of materials engineering for high triboelectric performance and multifunctional materials toward specific applications is summarized, including constructing micro/ nanostructures, chemically modifying the frication surface, modulating bulk friction materials, the mechanism for improved performance, and preparing materials for implantable medical devices, bionic skin, and wearable electronic devices. Moreover, an in depth discussion of the current challenges and future efforts for strengthening the performance of TENGs is elaborated in detail, which will better guide new researchers toward a deeper understanding of and explorations about TENGs.urgently needed to alleviate a more severe energy crisis, which has diverted extensive attention toward renewable energy (solar energy, geothermal energy, etc.) by virtue of its large quantity and ubiquitous existence in our environment. [1][2][3][4][5][6][7][8][9] In addition, the rapid development of science and technology has also suggested higher requirements for energy delivery. In the past few decades, large numbers of mobile communication electronics, smart wearable devices, and internet of things (IoT) devices based on tens of thousands of sensors have appeared in every corner of the globe. These electronic devices are usually characterized by requiring a small amount of power, only on the microwatt or even the milliwatt level, whereas they hold a relatively large shape to facilitate frequent charging or battery replacement for embedded traditional solid-state power sources. It is, therefore, desirable to integrate an energy harvester together with a battery to form a self-powered system that could be recharged by absorbing and transferring external fragmental energy. Furthermore, considering that a majority of these electronic devices are closely contacting the human body, the individualization of the energy-supply mode related to the person itself remains to be studied in depth.To tackle energy shortages and content-specific power supply requirements, researchers have designed a diversity of energyconversion devices derived from assorted working principles to collect energy, such as solar cells, electromagnetic generators, thermoelectric generators, piezoelectric nanogenerators, and triboelectric nanogenerators (TENGs). [10][11][12][13][14][15][16][17][18][19][20][21] Primarily benefiting from their light weight, low cost, multiple structures, extensive material selection, and even great efficiency at low operating frequencies, the novel TENGs have been proven as up-and-coming candidates to complementarily solve the energy-deficiency issue. T...

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Two-dimensional rotary triboelectric nanogenerator as a portable and wearable power source for electronics

Cited by 81 publications

References 24 publications

Wearable Large‐Scale Perovskite Solar‐Power Source via Nanocellular Scaffold

Wearable Large‐Scale Perovskite Solar‐Power Source via Nanocellular Scaffold

Triboelectric Nanogenerators for Mechanical Energy Harvesting

Progress in Triboelectric Materials: Toward High Performance and Widespread Applications

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