A New Pathway for Liquid–Solid Triboelectric Nanogenerator Using Streaming Flow by a Novel Direct Charge Transfer

Nam, Gyu Hyeon; Ahn, Jee Hwan; Lee, Gang Hee; Vo, Cong Phat; Ahn, Kyoung Kwan

doi:10.1002/aesr.202000031

Cited by 9 publications

(7 citation statements)

References 42 publications

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“…The two electrodes are based on PAM‐graphene hydrogels encapsulated in PDMS (Figure 7B). The liquid‐based TENG was designed to generate electrical outputs under ultrasound excitation, aiming to provide a source of wireless electrical stimulation 123 . This type of liquid‐based TENGs is still under development but has been suggested as an alternative to significantly enhance the electrical output as wearable electronics 124,125 …”

Section: Hydrogel Overviewmentioning

confidence: 99%

Hydrogel‐based triboelectric nanogenerators: Properties, performance, and applications

Torres

Troncoso

De-la-Torre

2021

Intl J of Energy Research

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Summary The development of triboelectric nanogenerators (TENGs) in 2012 revolutionized the vision of environmental energy harvesting. Nowadays, TENG assembly, working mode, and material selection are investigated continuously in order to obtain high‐performance and long‐lasting devices. Hydrogels are flexible and stretchable water‐swollen 3D polymer networks, which can be tailored to conduct electricity and render outstanding mechanical properties. Hydrogels have been used to develop novel flexible wearable TENGs. Here, we review the current knowledge concerning hydrogel‐based TENGs, including an overview of relevant hydrogel characteristics, hydrogel‐based TENG performance, and their practical applications. The single‐electrode TENG working mode is the most popular in hydrogel‐based TENGs as they can be easily attached and stretched for biomechanical energy harvesting. Hydrogel‐based TENGs have demonstrated to be capable of delivering high electrical output (250‐400 V, ≥10 μA) and being robust enough for devices that last for several months. Biomechanical energy sensing and harvesting, smart farming, biomedical, and human–machine control interfaces are investigated as potential applications of hydrogel‐based TENGs. Interestingly, energy harvesting from human motion is of particular interest for this type of TENG due to its outstanding stretchability, strength, and additional physical properties, such as self‐healing ability. In most cases, the devices are capable of powering small electronics entirely from harvested biomechanical energy. Biomedical applications involved wound healing acceleration driven by TENG‐powered electrical stimuli and disease monitoring, including implantable devices. Despite showing promising electrical performance, controlling water evaporation is still challenging to maintain the mechanical and conductive properties of hydrogel‐based TENGs. On the other hand, fully biodegradable TENGs are largely unexplored, as well as many applications, such as blue energy harvesting, the internet of things, and others. The next steps in this line of research must focus on addressing the main challenges of hydrogel‐based TENGs and filling the application knowledge gaps.

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Section: Hydrogel Overviewmentioning

confidence: 99%

Hydrogel‐based triboelectric nanogenerators: Properties, performance, and applications

Torres

Troncoso

De-la-Torre

2021

Intl J of Energy Research

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“…Liquid–solid triboelectric nanogenerators (LS-TENGs) harness energy from water, capturing low-frequency, irregular energy from raindrops, , rivers, , and oceans. , Their performance is influenced by the properties of the liquid and the material surfaces and interfaces . The wettability and surface charge density of solid materials are pivotal in the electrification of liquid–solid contact. − Adjusting the chemical composition and surface structure of the solid material can create different surface wettability.…”

Section: Introductionmentioning

confidence: 99%

“…Liquid−solid triboelectric nanogenerators (LS-TENGs) harness energy from water, capturing low-frequency, irregular energy from raindrops, 1,2 rivers, 3,4 and oceans. 5,6 Their performance is influenced by the properties of the liquid and the material surfaces and interfaces.…”

Section: Introductionmentioning

confidence: 99%

Enhancing the Output of Liquid–Solid Triboelectric Nanogenerators through Surface Roughness Optimization

Zhou,

Qin,

Cui

et al. 2024

ACS Appl. Mater. Interfaces

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The advent of liquid−solid triboelectric nanogenerators (LS-TENGs) has ushered in a new era for harnessing and using energy derived from water. To date, extensive research has been conducted to enhance the output of LS-TENGs, thereby improving water utilization efficiency and facilitating their practical application. However, in contrast to intricate chemical treatment methods and specialized structures, a straightforward operational process and cost-effective materials are more conducive to the widespread adoption of LS-TENGs in practical applications. This work presents a novel method to enhance the output of LS-TENGs by increasing the liquid−solid contact area. The approach involves creating roughness on the solid surface through sandpaper grinding, which is simple in design and easy to operate and significantly reduces the cost of the experiment. The theory is applied to the solid triboelectric layer commonly used in the LS-TENG, demonstrating its universality and wide applicability to improve the output of the LS-TENG. The practical performance of the device is demonstrated by charging the capacitor and external load and driving the hygrometer and commercial 5 W LED light bulb, which can directly light up 300 commercial lightemitting diodes (LEDs) driven by a drop of water. This work provides a new method for the optimization of LS-TENGs and contributes to the wide application of LS-TENGs. This is a significant step forward in the field of energy harvesting and utilization.

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“…[20] Subsequently, this environmentally friendly, efficient and easy-to-operate method quickly attracted the attention of scholars worldwide, opening a new chapter in the research of collecting renewable clean energy from water. [21][22][23][24][25][26] The SL-TENGs cleverly combine solid-liquid interface CE and electrostatic induction, and as micro-nano energy harvesters, show significant advantages and prospects in energy harvesting and utilization from water in the forms of water resources such as droplets, waves, and flows, and others. So far, research on SL-TENGs has been developed for nearly a decade (Figure 1), and their applications involve blue energy harvesting, [27] physical sensors, [28] chemical sensors, [29] biomedicine, [30] underwater wireless communication, [31] and many other fields.…”

Section: Introductionmentioning

confidence: 99%

Robust Solid‐Liquid Triboelectric Nanogenerators: Mechanisms, Strategies and Applications

Dong

Wang

Yang

et al. 2023

Adv Funct Materials

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Solid‐liquid triboelectric nanogenerators (SL‐TENGs) are a new technology that combines contact electrification (CE) and electrostatic induction to collect clean energy stored in natural water. Considering their unique advantages of high energy density, wide selection of materials and being suitable for large‐scale promotion, they have attracted more and more attention in recent years, and numerous studies have shown their great potential in various applications. Many critical applications of SL‐TENGs inevitably involve sustained and stable high electrical output. To achieve stable output performance and long cycle life in these applications, the adaptability of SL‐TENGs to material selection, structural design, and working environment is necessary. Therefore, the construction of SL‐TENGs matching different applications has become a critical research direction in TENGs. This review provides a historical summary of the development of SL‐TENGs in the past few years and analyzes the key factors affecting their electrical output performance. The exciting achievements of different constructions of SL‐TENGs for practical applications is also demonstrated such as energy harvesting, self‐powered sensing, and self‐powered cathodic protection. Finally, the development prospects of SL‐TENGs and the significant challenges for their further development is discussed.

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A New Pathway for Liquid–Solid Triboelectric Nanogenerator Using Streaming Flow by a Novel Direct Charge Transfer

Cited by 9 publications

References 42 publications

Hydrogel‐based triboelectric nanogenerators: Properties, performance, and applications

Hydrogel‐based triboelectric nanogenerators: Properties, performance, and applications

Enhancing the Output of Liquid–Solid Triboelectric Nanogenerators through Surface Roughness Optimization

Robust Solid‐Liquid Triboelectric Nanogenerators: Mechanisms, Strategies and Applications

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