Galloping triboelectric nanogenerator for energy harvesting under low wind speed

Zhang, Lanbin; Meng, Bo; Xia, Yang; Deng, Zhaoming; Dai, Huliang; Hagedorn, Peter; Peng, Zhengchun; Wang, Lin

doi:10.1016/j.nanoen.2020.104477

Cited by 131 publications

(57 citation statements)

References 44 publications

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“…Both electrodes were electrically connected by resistor representing load resistance. AC voltage was measured on the load resistance and corresponding DC value was established by root mean square (RMS), as is done by many authors [37][38][39][40]. Output RMS voltage of the triboelectric generator was measured for different values of load.…”

Section: Resultsmentioning

confidence: 99%

Characterization of Polyvinylidene Fluoride (PVDF) Electrospun Fibers Doped by Carbon Flakes

et al. 2020

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Polyvinylidene fluoride (PVDF) is a modern polymer material used in a wide variety of ways. Thanks to its excellent resistance to chemical or thermal degradation and low reactivity, it finds use in biology, chemistry, and electronics as well. By enriching the polymer with an easily accessible and cheap variant of graphite, it is possible to affect the ratio of crystalline phases. A correlation between the ratios of crystalline phases and different properties, like dielectric constant as well as piezo- and triboelectric properties, has been found, but the relationship between them is highly complex. These changes have been observed by a number of methods from structural, chemical and electrical points of view. Results of these methods have been documented to create a basis for further research and experimentation on the usability of this combined material in more complex structures and devices.

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Section: Resultsmentioning

confidence: 99%

Characterization of Polyvinylidene Fluoride (PVDF) Electrospun Fibers Doped by Carbon Flakes

et al. 2020

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“…[22][23][24][25] To subsequently convert vibration energy into electricity, there are several energy transduction methods including [Correction added on 15 October 2020, after first online publication: the corresponding address of Junlei Wang has been corrected in this version of the article.] electromagnetic, [26][27][28][29] electrostatic 30,31 and piezoelectric effects. [32][33][34][35][36] Because of the advantage of high-power density, using piezoelectric materials for energy harvesting has attracted numerous research interests.…”

Section: Introductionmentioning

confidence: 99%

An experimental study of a two‐degree‐of‐freedom galloping energy harvester

Wang

Huang

et al. 2020

Int J Energy Res

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Summary The cut‐in wind speed and the power output are the two main concerns of a galloping energy harvester. A good galloping energy harvester is expected to have a low cut‐in wind speed and a high power output. This paper proposes a two‐degree‐of‐freedom (2‐DOF) galloping‐based piezoelectric energy harvester (GPEH) by mounting a secondary beam onto a primary piezoelectric cantilever beam. An experimental study is conducted to evaluate the actual energy harvesting performance of the proposed 2‐DOF GPEH. The effects of the secondary beam length and the mounting position on the cut‐in wind speed and the power output are investigated. It is revealed that the introduction of the secondary beam can reduce the cut‐in wind speed from 2.372 m/s to 1.961 m/s. Mounting the secondary beam further away from the bluff body weakens the influence of the secondary beam on the energy harvesting performance of the 2‐DOF GPEH. Moreover, the power output can be increased or decreased by tuning the secondary beam length. The power output from a well‐tuned 2‐DOF GPEH can be increased for about 111.1%, as compared to the conventional 1‐DOF GPEH. By contrast, the power output from a badly tuned 2‐DOF GPEH is reduced for about 22.2%. A simple theoretical model is developed for explaining the experimentally observed phenomenon and can be used to provide some guidelines in the design of 2‐DOF GPEH to avoid performance deterioration.

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“…Vortex shedding usually occurs when flow pasts a bluff body. Researchers mainly focus on the vibration response of bluff body while paying less attention to the energy contained in the flow wake over past decades [95][96][97][98]. Some investigations have been conducted to examine the energy extraction from the vortex shedding-induced vibration (VSIV) via piezoelectric harvesters.…”

Section: Enhancement Of Energy Harvestingmentioning

confidence: 99%

The State‐of‐the‐Art Brief Review on Piezoelectric Energy Harvesting from Flow‐Induced Vibration

Zhu

Tang

Yang

et al. 2021

Shock and Vibration

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Flow-induced vibration (FIV) is concerned in a broad range of engineering applications due to its resultant fatigue damage to structures. Nevertheless, such fluid-structure coupling process continuously extracts the kinetic energy from ambient fluid flow, presenting the conversion potential from the mechanical energy to electricity. As the air and water flows are widely encountered in nature, piezoelectric energy harvesters show the advantages in small-scale utilization and self-powered instruments. This paper briefly reviewed the way of energy collection by piezoelectric energy harvesters and the various measures proposed in the literature, which enhance the structural vibration response and hence improve the energy harvesting efficiency. Methods such as irregularity and alteration of cross-section of bluff body, utilization of wake flow and interference, modification and rearrangement of cantilever beams, and introduction of magnetic force are discussed. Finally, some open questions and suggestions are proposed for the future investigation of such renewable energy harvesting mode.

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Galloping triboelectric nanogenerator for energy harvesting under low wind speed

Cited by 131 publications

References 44 publications

Characterization of Polyvinylidene Fluoride (PVDF) Electrospun Fibers Doped by Carbon Flakes

Characterization of Polyvinylidene Fluoride (PVDF) Electrospun Fibers Doped by Carbon Flakes

An experimental study of a two‐degree‐of‐freedom galloping energy harvester

The State‐of‐the‐Art Brief Review on Piezoelectric Energy Harvesting from Flow‐Induced Vibration

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