Extremely high and elongated power output from a mechanical mediator-assisted triboelectric nanogenerator driven by the biomechanical energy

Yoo, Jaewon; Yoo, Donghyeon; Lee, Seoulmin; Sim, Jae Yoon; Hwang, Woonbong; Choi, Dongwhi; Kim, Dong Sung

doi:10.1016/j.nanoen.2018.11.083

Cited by 22 publications

(11 citation statements)

References 55 publications

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“…In this section, we review various types of rationally designed mechanical systems with the TENGs integrated with the mechanical elements for the effective generation of electrical energy. − Due to the simplicity of the working principle of tribo-electrification, which is based on the contact-separation of dissimilar materials as mentioned above, the TENG can be created in a variety of ways by employing various mechanical elements. − In this regard, the mechanical systems enable the TENG to convert various mechanical movements that are difficult-to-harvest around us into easy-to-harvest forms for the TENG. Therefore, this review focus on the motion transformation of the mechanical movements to fulfill the intended purpose in the various mechanical TENG systems.…”

Section: Mechanical Systems For Tengsmentioning

confidence: 99%

Recent Advances in Triboelectric Nanogenerators: From Technological Progress to Commercial Applications

et al. 2023

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Serious climate changes and energy-related environmental problems are currently critical issues in the world. In order to reduce carbon emissions and save our environment, renewable energy harvesting technologies will serve as a key solution in the near future. Among them, triboelectric nanogenerators (TENGs), which is one of the most promising mechanical energy harvesters by means of contact electrification phenomenon, are explosively developing due to abundant wasting mechanical energy sources and a number of superior advantages in a wide availability and selection of materials, relatively simple device configurations, and low-cost processing. Significant experimental and theoretical efforts have been achieved toward understanding fundamental behaviors and a wide range of demonstrations since its report in 2012. As a result, considerable technological advancement has been exhibited and it advances the timeline of achievement in the proposed roadmap. Now, the technology has reached the stage of prototype development with verification of performance beyond the lab scale environment toward its commercialization. In this review, distinguished authors in the world worked together to summarize the state of the art in theory, materials, devices, systems, circuits, and applications in TENG fields. The great research achievements of researchers in this field around the world over the past decade are expected to play a major role in coming to fruition of unexpectedly accelerated technological advances over the next decade.

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Section: Mechanical Systems For Tengsmentioning

confidence: 99%

Recent Advances in Triboelectric Nanogenerators: From Technological Progress to Commercial Applications

et al. 2023

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“…Wearable and smart device technology, which promises to enrich people's lives in various ways, has been advancing rapidly. [ 1–13 ] Such devices require electricity to be supplied by batteries, which store electricity in the form of chemical energy. To keep pace with the rapid development of portable electronic devices, the demand for stable batteries with enhanced electrical capacities is also growing rapidly, but such demands are not easily met.…”

Section: Introductionmentioning

confidence: 99%

“…Wearable and smart device technology, which promises to enrich people's lives in various ways, has been advancing rapidly. [1][2][3][4][5][6][7][8][9][10][11][12][13] Such devices require electricity to be supplied by batteries, which store electricity in the form of chemical energy. of low-frequency reciprocating motions with limited displacement, harvesting biomechanical energy with the TENG requires additional consideration of a proper power transmission unit composed of various mechanical components for generation of high electrical output.…”

Section: Introductionmentioning

confidence: 99%

“…[27][28][29] Given that a rotational TENG generates electricity only when the rotator moves away from the stator, as shown in Figure 1b, the angular velocity of the rotator is a critical parameter in determining the number of cycles that the rotator moves through; a high angular velocity is necessary for high electrical output. [1] Generation of rotational motion with high angular velocity through the HH-TENG is described schematically in Figure 1c. As the gear-train is connected to the rotational TENG, electricity generated by the TENG can be treated as the same phenomenon associated with rotation of a gear-train.…”

Section: Introductionmentioning

confidence: 99%

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Development of a High‐Performance Handheld Triboelectric Nanogenerator with a Lightweight Power Transmission Unit

Choi

Cho

Yun

et al. 2020

Adv Materials Technologies

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To keep pace with the rapid development of portable electronic devices, the demand for stable batteries with enhanced electrical capacities is also growing rapidly, but such demands are not easily met. Thus, energy-harvesting technology is an alternate solution, in which unintentionally abandoned energy is scavenged to supply electricity to portable electronics. Given that motion associated with daily human activities can involve large amounts of reusable energy, biomechanical energy harvesting has received significant research attention. [10][11][12][13][14][15][16][17][18] Several portable biomechanical energy-harvesting platforms are available based on piezoelectric, electromagnetic, and triboelectric effects. They offer the promise of generating electricity for standalone electronics without the need for external wiring.Triboelectric energy harvesting, which is based on the combination of contact electrification between two different material surfaces and electrical induction, has been spotlighted as a promising technology due to material selection diversity, high efficiency, and shape adaptability. [19][20][21][22][23][24][25][26][27][28][29][30][31][32][33][34] Previous studies of triboelectric energy harvesters, also known as triboelectric nanogenerators (TENGs), have found that the only requirement for generating electricity through a TENG is sequential contact and separation of two different material surfaces, making the TENG a promising portable energy-harvesting platform. [35][36][37][38][39][40][41][42][43][44][45][46] In addition, the advantageous characteristics of the TENG enable it to be used for self-powered sensing applications. [47][48][49][50] The operating principle of a TENG is based on the presence of charges on the surface of the material rather than its volume, so the volumetric power density has the potential to be improved far more than is the case with other energy-harvesting platforms. So far, the most widely and frequently used method to increase the output power is to introduce micro/nanoscale topography on the surface of the TENG to generate a large amount of electrical charges during its operation. In addition to modification of the contact surface, intentional control of the kinematics of the contact layer movement by using mechanical components can improve performance substantially. Given that almost all biomechanical energy has the rare characteristics A triboelectric nanogenerator (TENG) is a promising energy harvester that exploits the combination of contact electrification between two different material surfaces and electrical induction. In this study, a handheld-TENG (HH-TENG) is developed to harvest biomechanical energy effectively, especially energy generated from finger motions, which is one of the most common body movements involving lots of energy. To enhance the electrical output performance of the device while minimizing the inconvenience caused by carrying it, a rationally designed lightweight power transmission unit is adopted. As a result, an extremely high number...

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“…Conventional TENGs also suffer from limited portability and decline in the output as the size decreases. Therefore, peak power intensity increase and impedance matching are of significant interest for maximizing power conversion efficiency and broadening the potential applications of these devices …”

Section: Introductionmentioning

confidence: 99%

Triboelectric Harvesting by a Dual‐Tip Peak Power Multiplier under Airtight Condition

Zhang

Zhai

et al. 2020

Energy Tech

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Triboelectric nanogenerators (TENGs) are effective for harvesting mechanical energy and converting into electricity. Such devices have high output voltage and low current, appearing as high output impedance. Impedance mismatches involving these devices create challenges in power usage, storage, and management. Herein, a dual‐tip‐assisted TENG is developed and its electrical output performance under airtight condition is investigated. The generated charges can rapidly accumulate at the dual tip and produce a high potential difference. Such a potential difference accelerates the induced charges’ transfer speed and quantity. Gas discharge occurs once the potential exceeds some threshold, providing a conduction path for accumulated charges. With the help of such dual‐tip peak power multiplier, TENG's peak‐to‐peak short‐circuit current and open‐circuit voltage are 433% and 145% higher, respectively. The peak power reaches a maximum of 34.8 mW with a 100 kΩ load resistance, whereas that of the original TENG is 1.5 mW with a 100 MΩ load resistance, indicating 22.2 times of peak power increase and an optimal matching impedance decrease by three orders of magnitude. The results indicate that this multiplier is meaningful for the optimization of TENG's output and impedance.

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Extremely high and elongated power output from a mechanical mediator-assisted triboelectric nanogenerator driven by the biomechanical energy

Cited by 22 publications

References 55 publications

Recent Advances in Triboelectric Nanogenerators: From Technological Progress to Commercial Applications

Recent Advances in Triboelectric Nanogenerators: From Technological Progress to Commercial Applications

Development of a High‐Performance Handheld Triboelectric Nanogenerator with a Lightweight Power Transmission Unit

Triboelectric Harvesting by a Dual‐Tip Peak Power Multiplier under Airtight Condition

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