A dynamics model of triboelectric nanogenerator transducers

Liu, Weiqi; Shi, Jian

doi:10.1016/j.nanoen.2021.106479

Cited by 7 publications

(4 citation statements)

References 27 publications

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“…The output performance of the output voltage, current, and transmitted charge is therefore influenced by the incident wave, the hydrodynamic parameters of the floater, and TENG structure. Hydrodynamic and electrical model for AWS‐TENG can be obtained, according to Newton's Second Law (Figure 2b) and the governing equation for the floater in heave is [ 46–48 ]

(m + m_{normala}) \ddot{x false(t false)} = f_{air} false(t false) - f_{normalh} false(t false) - f_{ef} false(t false) - f_{normalf} false(t false) - f_{wd}

where m is the mass of the float and m a is the additional mass of the floater in motion, x(t) is the floater's displacement, i.e., the separation distance between the two‐electrode plate of the TENG. f air (t) is the air pressure.…”

Section: Resultsmentioning

confidence: 99%

Triboelectric Nanogenerators Based on the Archimedes Wave Swing for Water Wave Energy Harvesting: Physics Experiments and Simulations

et al. 2023

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Triboelectric nanogenerators (TENGs) have demonstrated enormous potential as a novel technology for water wave energy harvesting and self‐powered sensors. However, most of the reported studies have focused on sea‐level energy capture. The energy below the sea level including potential energy and kinetic energy is also highly abundant. Herein, a prototype TENG based on the Archimedes wave swing (AWS‐TENG) is proposed. The AWS‐TENG is a unique wave energy conversion device since it is completely submerged and offers excellent concealment. The physical model of AWS‐TENG is developed by investigating structural properties and wave energy theory. Furthermore, a V‐Q‐X equation analysis of the TENG in vertical separation mode is carried out via finite element simulation to better understand its dynamic electrical characteristics. In addition, experimental tests are carried out on the system. The experimental results show that AWS‐TENG achieves a power density output of 7.9 mW m−2 at 4.5 Hz, which is sufficient for fast capacitor charging and application circuits. This proposed TENG design offers a unique way to capture wave energy.

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(m + m_{normala}) \ddot{x false(t false)} = f_{air} false(t false) - f_{normalh} false(t false) - f_{ef} false(t false) - f_{normalf} false(t false) - f_{wd}

Section: Resultsmentioning

confidence: 99%

Triboelectric Nanogenerators Based on the Archimedes Wave Swing for Water Wave Energy Harvesting: Physics Experiments and Simulations

et al. 2023

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“…emergence not only promotes the study of triboelectrification mechanism, but also triggers a wave of research on the application technology of friction/contact conversion of electrical energy. The triboelectric nanogenerator is a nonlinear dynamic system that generates alternating electrical signals through periodic mechanical motion [3]. The initial conditions of the system are closely related to its output signals.…”

Section: Introductionmentioning

confidence: 99%

Nonlinear dynamics study of freestanding triboelectric nanogenerator system

Cao,

Bao,

Yin

et al. 2024

J. Phys. D: Appl. Phys.

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As a nonlinear dynamic system, the dynamic equation of triboelectric nanogenerator system is not only difficult to accurately establish, but also difficult to solve. The output signals of triboelectric nanogenerator system depends on the initial conditions of the system, which reflects the dynamic behavior of the system. Currently, there is little research on using the output signals to study the dynamic behavior of triboelectric nanogenerator system. Therefore, a dynamic simulation model of a freestanding triboelectric nanogenerator (F-TENG) system was established using COMSOL software. The mathematical model of the F-TENG system was fitted. Using chaos theory and its phase-space reconstruction technology, the phase-space trajectories of the F-TENG system were reconstructed through voltage signals under external factors, and the dynamic behavior of the F-TENG system was discussed and studied. Finally, validation experiments were carried out. The research shows that with the variation of internal factors and operating frequency, the mathematical model of the F-TENG system remains basically unchanged, and the variation law of output characteristics also remains basically unchanged. The F-TENG system is in periodic motion; With the variation of external factors such as resistance and friction layer spacing, the mathematical model of the F-TENG system will evolve in a complex direction, and the output characteristics will gradually distort. The F-TENG system will evolve from periodic motion to chaotic motion. The research results not only reveal the dynamic behavior and enrich the nonlinear dynamic theory of triboelectric nanogenerator system, but also provide theoretical guidance for increasing the working bandwidth and stability of triboelectric nanogenerator system.

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“…[1][2][3] Researchers have conducted a lot of exploration and studies in structure design, [4][5][6][7] charge transfer mechanism, [8][9][10][11][12] and electromechanical coupling characteristics. [13][14][15] In particular, structural improvements have promoted the transformation of the new technology into engineering applications. The introduction of additional weights or springs can convert a low-frequency excitation into a high-frequency response and increase output power.…”

Section: Introductionmentioning

confidence: 99%

Investigation of Power Density Amplification in Stacked Triboelectric Nanogenerators

Shen,

Zhang,

Guo

et al. 2024

Energy & Environ Materials

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In engineering practice, the output performance of contact separation TENGs (CS‐TENGs) increases with the increase of tribo‐pair area, which includes increasing the size of single layer CS‐TENGs (SCS‐TENGs) or the number of units (zigzag TENGs). However, such two strategies show significant differences in output power and power density. In this study, to seek a universal CS‐TENG design solution, the output performance of a SCS‐TENG and a zigzag TENG (Z‐TENG) is systematically compared, including voltage, current, transferred charge, instantaneous power density, and charging power density. The relationship between contact area and output voltages is explored, and the output voltage equation is fitted. The experimental results reveal that SCS‐TENGs yield better performance than Z‐TENGs in terms of voltage, power, and power density under the same total contact area. Z‐TENGs show energy loss during the transfer of mechanical energy, and such loss is aggravated by the increasing number of units. The instantaneous peak power of the SCS‐TENG is up to 22 times that of the Z‐TENG (45 cm2). Furthermore, the power density of capacitor charging of SCS‐TENGs is 131% of that of Z‐TENGs, which are relatively close. Z‐TENG is a feasible alternative when the working space is limited.

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A dynamics model of triboelectric nanogenerator transducers

Cited by 7 publications

References 27 publications

Triboelectric Nanogenerators Based on the Archimedes Wave Swing for Water Wave Energy Harvesting: Physics Experiments and Simulations

Triboelectric Nanogenerators Based on the Archimedes Wave Swing for Water Wave Energy Harvesting: Physics Experiments and Simulations

Nonlinear dynamics study of freestanding triboelectric nanogenerator system

Investigation of Power Density Amplification in Stacked Triboelectric Nanogenerators

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