Theoretical modeling of contact-separation mode triboelectric nanogenerators from initial charge distribution

Zhao, Hongfa; Wang, Hao; Yu, Hongyong; Xu, Qinghao; Li, Xiaosa; Guo, Jing; Shao, Jiajia; Wang, Zhong Lin; Xu, Minyi; Ding, Wenbo

doi:10.1039/d3ee04143c

Cited by 4 publications

(1 citation statement)

References 61 publications

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“…V is the voltage output, Q is the amount of transferred charge between the two electrodes, I is the current output, and R is the load resistance; the V oc and I sc depend on the frequency of cyclical moving on both sides of triboelectric materials as a sinusoidal function that can be described by x (t) = Asin (ωt + θ), where t, A, ω and θ are the time, amplitude, angular velocity and initial phase angle of the cyclical motion, respectively [51,52].…”

Section: Electromechanical Studymentioning

confidence: 99%

The investigation of the energy harvesting performance using electrospun PTFE/PVDF based on a triboelectric assembly

White,

Pankaew,

Bavykin

et al. 2024

Smart Mater. Struct.

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This work presents an investigation into the energy harvesting performance of a combination of PTFE and PVDF materials prepared using a one-step electrospinning technique. Before electrospinning, different percentages of the 1-micron PTFE powder were added to a PVDF precursor. The surface morphology of the electrospun PTFE/PVDF fibre was investigated using a scanning electron microscope (SEM) and tunnelling electron microscope (TEM). The structure was investigated using Fourier-transform infrared spectroscopy (FTIR) and X-ray diffraction analysis (XRD). A highly porous structure was observed with a mix of the α- and β-phase PVDF. The amount of β-phase was found to reduce when increasing the percentage of PTFE. The maximum amount of PTFE that could be added and still be successfully electrospun was 20%. This percentage showed the highest energy harvesting performance of the different PTFE/PVDF combinations. Electrospun fibres with different percentages of PTFE were deployed in a triboelectric energy harvester operating in the contact separation mode and the open circuit voltage and short circuit current were obtained at frequencies of 4 to 9 Hz. The 20% PTFE fibre showed 4 (51 to 202 V) and 7 times (1.3 to 9.04 µA) the voltage and current output respectively when compared with the 100% PVDF fibre. The Voc and Isc were measured for different load resistances from 1kΩ to 6GΩ and achieved a maximum power density of 348.5 mW/m2 with a 10 MΩ resistance. The energy stored in capacitors 0.1, 0.47, 1, and 10 µF from a book shaped PTFE/PVDF energy harvester were 1.0, 16.7, 41.2 and 136.8 µJ, respectively. The electrospun fibre is compatible with wearable and e-textile applications as it is breathable and flexible. The electrospun PTFE/PVDF was assembled into shoe insoles to demonstrate energy harvesting performance in a practical application.

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Section: Electromechanical Studymentioning

confidence: 99%

The investigation of the energy harvesting performance using electrospun PTFE/PVDF based on a triboelectric assembly

White,

Pankaew,

Bavykin

et al. 2024

Smart Mater. Struct.

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Enhancing the Humidity Resistance of Triboelectric Nanogenerators: A Review

Zhang,

Boyer,

Zhang

2024

Small

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Triboelectric nanogenerators (TENGs) are sustainable energy resources for powering electronic devices from miniature to large‐scale applications. However, their output performance and stability can deteriorate significantly when TENGs are exposed to moisture or humidity caused by the ambient environment or human physiological activities. This review provides an overview of the recent research advancements in enhancing the humidity resistance of TENGs. Various approaches have been reviewed including encapsulation techniques, surface modification of triboelectric materials to augment hydrophobicity or superhydrophobicity, the creation of fibrous architectures for effective moisture dissipation, leveraging water assistance for TENG performance enhancement, and other strategies like charge excitation. These research efforts contribute to the improvement of environmental adaptability and lead to expanded practical TENG applications both as energy harvesters and self‐powered sensors. The efficacy of these strategies and future challenges are also discussed to facilitate the continued development of resilient TENGs in high humidity environments.

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Theoretical modeling of triboelectric receiver transducer for mechanic-electrical transformations

Chang,

Zhao,

Qin

et al. 2024

Nano Energy

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Theoretical modeling of contact-separation mode triboelectric nanogenerators from initial charge distribution

Abstract: A systematic theoretical analysis for contact-separation mode TENGs is presented, including theoretical models, analysis methods, validation approaches, and extended analysis for applications.

Cited by 4 publications

References 61 publications

The investigation of the energy harvesting performance using electrospun PTFE/PVDF based on a triboelectric assembly

The investigation of the energy harvesting performance using electrospun PTFE/PVDF based on a triboelectric assembly

Enhancing the Humidity Resistance of Triboelectric Nanogenerators: A Review

Theoretical modeling of triboelectric receiver transducer for mechanic-electrical transformations

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