Dielectric liquid-based self-operating switch triboelectric nanogenerator for current amplification via regulating air breakdown

Chung, Jihoon; Chung, Seh‐Hoon; Lin, Zong‐Hong; Jin, Youngho; Hong, Jinkee; Lee, Sang‐Min

doi:10.1016/j.nanoen.2021.106292

Cited by 36 publications

(19 citation statements)

References 36 publications

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confidence: 70%

“…When triboelectric layers are exposed to air, the field emission will occur, which activates TENG output via direct electron flow (Figure 6f). [33] Moreover, they developed a nonpolar liquid lubricant submerged TENG (LLS-TENG) with a rolling electrode, and this TENG operates in a nonliquid lubricant environment (Figure 6g). The rolling electrodes can help further improve the durability of LLS-TENG, and the electric current is amplified by direct electron flow between the direct electron and plate electrode.…”

Section: Interface Liquid Lubricationmentioning

confidence: 99%

Section: Charge Excitationmentioning

confidence: 99%

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An Advanced Strategy to Enhance TENG Output: Reducing Triboelectric Charge Decay

et al. 2023

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The Internet of Things (IoT) is poised to accelerate the construction of smart cities. However, it requires more than 30 billion sensors to realize the IoT vision, posing great challenges and opportunities for industries of self‐powered sensors. Triboelectric nanogenerator (TENG), an emerging new technology, is capable of easily converting energy from surrounding environment into electricity, thus TENG has tremendous application potential in self‐powered IoT sensors. At present, TENG encounters a bottleneck to boost output for large‐scale commercial use if just by promoting triboelectric charge generation, because the output is decided by the triboelectric charge dynamic equilibrium between generation and decay. To break this bottleneck, the strategy of reducing triboelectric charge decay to enhance TENG output is focused. First, multiple mechanisms of triboelectric charge decay are summarized in detail with basic theoretical principles for future research. Furthermore, recent advances in reducing triboelectric charge decay are thoroughly reviewed and outlined in three aspects: inhibition and application of air breakdown, simultaneous inhibition of air breakdown and triboelectric charge drift/diffusion, and inhibition of triboelectric charge drift/diffusion. Finally, challenges and future research focus are proposed. This review provides reference and guidance for enhancing TENG output.

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supporting

confidence: 70%

Section: Interface Liquid Lubricationmentioning

confidence: 99%

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An Advanced Strategy to Enhance TENG Output: Reducing Triboelectric Charge Decay

et al. 2023

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“…Although the liquid lubricants could suppress the air breakdown on the dielectric surface, the obtained electrical current was as low as other conventional TENGs. To overcome the current limitations of TENGs, Lee et al [198] developed a dielectric liquid-based self-operating switch TENG, which could control the field emission on the electrode surface through the movement of the dielectric liquid. The movement of the dielectric material plate regulated the air breakdown by acting as a selfoperating switch, which could enhance the current output of the TENG.…”

Section: Introduction Of Lubricating Triboelectric Interfaces For Boo...mentioning

confidence: 99%

Boosting the Durability of Triboelectric Nanogenerators: A Critical Review and Prospect

Zhao

Shi

2023

Adv Funct Materials

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Triboelectric nanogenerators (TENGs) have attracted great interests in the development of sustainable energies and intelligent society. However, a big challenge for TENGs in practical applications is the unavoidable external mechanical abrasion and/or contaminant adsorption on the triboelectric materials, which leads to the significant decrease of the durability of TENGs and is urgently needed to be addressed. There are already a series of interesting progresses on the topic of the TENGs' durability. In this study, reviewing the durability of TENGs via both the advanced materials/structure designing and the novel surface/interface engineering is focused upon, which includes choosing basic TENG materials, improving composites performance, optimizing structures, and designing triboelectric surfaces and interfaces. To get a better understanding of the durability of TENGs in published studies, the quantifiable levels of service life are also summarized including operation cycles, time, friction coefficient, and wear loss of triboelectric materials, where the boosting mechanisms are also discussed and summarized. Finally, the challenges as well as key strategies toward high durable TENGs are presented.

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“…Generally, TENG can only generate few microamperes of current output. Even though, several studies have reported that fabricating nano-micro-surfaces [21], utilizing external circuits such as charge pump circuit and charge excitation circuit [22], and using novel materials [23] can increase current output of TENG; most of these methods are hard to be utilized for wearable TENGs by the complex structure. Moreover, as the human body has limited movement, the wearable TENG can only harvest energy from limited mechanical input.…”

Section: Introductionmentioning

confidence: 99%

High-Output Wearable Flow Ring-Based Triboelectric Nanogenerator via Opposite Charging Intermediate Layer

Chung

Jang

Kim

et al. 2023

International Journal of Energy Research

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Triboelectric nanogenerator (TENG) is one of the emerging energy harvesting technologies with the potential to be an alternative energy source. Owing to the various advantages of TENG, such as low cost, simple design, and high applicability, several researchers reported wearable TENG devices that can power electronics by harvesting human motion. However, as the human body has limited movement, the existing wearable TENG devices can only generate low power to turn on the electronics. In this study, a flow ring-based TENG (FR-TENG) is fabricated, which can be applied to wearable devices to generate high voltage and current output by including an opposite charging intermediate layer. By the simulation and experimental results, FR-TENG is optimized to generate a high output, that is, peak open-circuit voltage and closed-circuit current of up to 1020 V and 260 mA, respectively, owing to the electrostatic discharge. By these results, sleeve-type wearable FR-TENG is fabricated which can effectively harvest energy from arm movement. The sleeve-type FR-TENG can generate a high output owing to the working mechanism of FR-TENG; the high output was used to turn on 200 LEDs.

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Dielectric liquid-based self-operating switch triboelectric nanogenerator for current amplification via regulating air breakdown

Cited by 36 publications

References 36 publications

An Advanced Strategy to Enhance TENG Output: Reducing Triboelectric Charge Decay

An Advanced Strategy to Enhance TENG Output: Reducing Triboelectric Charge Decay

Boosting the Durability of Triboelectric Nanogenerators: A Critical Review and Prospect

High-Output Wearable Flow Ring-Based Triboelectric Nanogenerator via Opposite Charging Intermediate Layer

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