Sub-watt power triboelectric generator via polarization switching charge carrier

Chung, Seh‐Hoon; Cha, Kyunghwan; Song, Myunghwan; Kim, Dongchang; Heo, Deokjae; Kim, Min‐Kun; Jung, Heesoo; Jin, Youngho; Hong, Jinkee; Chung, Jihoon; Lee, Sang‐Min

doi:10.1016/j.nanoen.2022.107754

Cited by 8 publications

(4 citation statements)

References 27 publications

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“…Mechanical energy as a kind of diversified and widespread energy is totally awesome for powering various electronic devices. In fact, piezoelectric [3][4][5][6][7][8][9][10][11] electromagnetic [12,13] and electrostatic effects [14] are well-established approaches that can be used to effectively convert mechanical energy into electricity. As an innovative creation, triboelectric nanogenerators (TENG) have been recently developed for harvesting mechanical energy through the coupling between the triboelectric effect and the electrostatic effect [15].…”

Section: Introductionmentioning

confidence: 99%

The regulation and its application of the charge decay rate in triboelectric nanogenerator

Zheng,

Lin,

Zhao

et al. 2024

Nanotechnology

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The decay rate of charge in the friction layer is one of the key factors affecting the output performance of triboelectric nanogenerators (TENG). Reducing the decay rate of the triboelectric charge can increase the charge-carrying capacity of the friction layer and improve the output current and voltage of the TENG. This makes a friction generator more suitable for discontinuous driving environments. In contrast, increasing the decay rate of the charge in the friction layer can greatly improve the recovery time of the device, although it reduces the output performance of the generator. This is conducive to the application of friction generator in the field of sensors. In this study, polystyrene (PS) and carbon nanotubes (CNTs) were added to polyvinylidene fluoride (PVDF) nanofibers to adjust the charge decay time in the friction layer, thereby regulating the output performance of the friction generator and sensor. When the amount of added PS in the PVDF nanofiber reached 20%, the charge density on the friction surface increased by 1.9 times, and the charge decay time decreased by 64 times; when 0.1 wt% CNTs were added in the PVDF nanofiber, the charge decay time increased by more than 10 times. The former is more conducive to improving the power generation performance of the TENG, and the latter significantly improves the stability and repeatability of TENG-based sensors.

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Section: Introductionmentioning

confidence: 99%

The regulation and its application of the charge decay rate in triboelectric nanogenerator

Zheng,

Lin,

Zhao

et al. 2024

Nanotechnology

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“…Despite their various advantages, TENGs have limitations because they generate only low electrical power for real-life applications. To overcome this limitation, several studies have been conducted to enhance the electrical output of TENGs, such as increasing the surface charge density by suppressing the air breakdown effect [10][11][12], increasing the contact surface with a mechanical structure [13][14][15], and utilizing additional circuits, such as charge excitation circuits [16][17][18]. However, although several strategies for enhancing the electrical output of TENGs have been reported, TENGs still have limited electrical output owing to the space constraints of the fundamental mechanism.…”

Section: Introductionmentioning

confidence: 99%

Enhancing Strategy of Triboelectric Nanogenerator via Origami Pattern by Harvesting Mechanical Motion and Wind Flow

Chung,

Kim,

Lin

et al. 2024

International Journal of Energy Research

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Triboelectric nanogenerators (TENGs) are promising energy-harvesting devices that generate electricity from mechanical energy. However, the electrical outputs of typical TENGs are limited because of the fundamental mechanism by which TENGs require a certain amount of space for contact-separation motion. Therefore, we developed an origami-based vertical/fluttering hybrid TENG (OVFH-TENG), which is the innovative structure that can generate electricity from both vertical movement and wind flow which is generated by vertical movement. It consists of a vertical TENG and a fluttering TENG where vertical TENGs can generate electricity and wind flow from mechanical input and the fluttering TENGs can generate electricity from the wind flow which is generated by its own operation process. Thus, OVFH-TENG can effectively harvest energy from vertical contact and fluttering motions with a single input. The optimized OVFH-TENG generated a 34.7% higher output than the general contact-separation TENG. Finally, the OVFH-TENG was able to light 180 LEDs, which was not possible with a general contact-separation TENG.

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“…Owing to the innovative crumpled foil design, the RFCB‐TENG exhibits outstanding characteristics, such as ultralight weight, low noise, and high durability, which are significantly advantageous characteristics for sustainable power sources. The RFCB‐TENG was fabricated using an air‐breakdown model, [ 10 ] which produces electricity via direct electron transfer in a strong electrical field to generate a high electrical output. Therefore, the RFCB‐TENG achieved a high‐output performance with an output peak voltage of 648 V, a current density of 8.1 mA cm −3 , and an optimum power density of 162.7 mW cm −3 .…”

Section: Introductionmentioning

confidence: 99%

Recycled, Contaminated, Crumpled Aluminum Foil‐Driven Triboelectric Nanogenerator

et al. 2023

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With rapid urbanization and global population growth, the amount of wasted aluminum foil is significantly increasing. Most deformed and contaminated foil is difficult to recycle; hence, it is landfilled or incinerated, causing environmental pollution. Therefore, using aluminum foil waste for electricity may be conducive to addressing environmental problems. In this regard, various literatures have explored the concept of energy generation using foil, while a crumple ball design for this purpose has not been studied. Thus, a recycled foil‐based crumpled ball triboelectric nanogenerator (RFCB‐TENG) is proposed. The crumpled ball design can minimize the effects of contamination on foil, ensuring efficient power output. Moreover, owing to novel crumpled design, the RFCB‐TENG has some outstanding characteristics to become a sustainable power source, such as ultralight weight, low noise, and high durability. By introducing the air‐breakdown model, the RFCB‐TENG achieved an output peak voltage of 648 V, a current of 8.1 mA cm3, and an optimum power of 162.7 mW cm3. The structure of the RFCB‐TENG is systemically optimized depending on the design parameters to realize the optimum output performance. Finally, the RFCB‐TENG operated 500 LEDs and 30‐W commercial lamps. This work paves the guideline for effectively fabricating the TENG using waste‐materials while exhibiting outstanding characteristics.

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Sub-watt power triboelectric generator via polarization switching charge carrier

Cited by 8 publications

References 27 publications

The regulation and its application of the charge decay rate in triboelectric nanogenerator

The regulation and its application of the charge decay rate in triboelectric nanogenerator

Enhancing Strategy of Triboelectric Nanogenerator via Origami Pattern by Harvesting Mechanical Motion and Wind Flow

Recycled, Contaminated, Crumpled Aluminum Foil‐Driven Triboelectric Nanogenerator

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