Friction, tribochemistry and triboelectricity: recent progress and perspectives

Galembeck, Fernando; Burgo, Thiago A. L.; Balestrin, Lia Beraldo da Silveira; Gouveia, Rubia F.; Silva, Cristiane A.; Galembeck, André

doi:10.1039/c4ra09604e

Cited by 135 publications

(102 citation statements)

References 155 publications

(310 reference statements)

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“…In contrast, when the nylon and PTFE are brought into repeated contact, the nylon acquires a positive charge that increases with collision number (green and orange data). This is consistent with previous measurements of the triboelectric series [15,[31][32][33][34]. Qualitatively, the asymptotic accumulation of charge on the nylon at 78 • C is smaller than at 40 • C. These results are consistent with the trends reported in Ref.…”

Section: Experimental Methods and Resultssupporting

confidence: 93%

Temperature dependence of nylon and PTFE triboelectrification

Harris

Lim

Jaeger

2019

Phys. Rev. Materials

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Contact electrification, or tribocharging, is pertinent to a broad range of industrial and natural processes involving dielectric materials. However, the basic mechanism by which charge is transferred between insulators is still unclear. Here, we use a simple apparatus that brings two macroscopic surfaces into repeated contact and measures the charge on the surfaces after each contact. We vary the temperature of the surfaces, and find that increasing temperature leads to a decrease in the magnitude of charge transfer. When paired with a Monte-Carlo simulation and TGA measurements, our results support a mechanism where adsorbed surface water is crucial for charge exchange. Our setup is easily extendable to a variety of industrially relevant materials.

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Section: Experimental Methods and Resultssupporting

confidence: 93%

Temperature dependence of nylon and PTFE triboelectrification

Harris

Lim

Jaeger

2019

Phys. Rev. Materials

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“…[11] The relative motion between triboelectrically-charged surfaces driven by applied force induces periodically varied potential in the TENGs. Generally, chemical bonds are formed between some parts of the surfaces when two kinds of materials contact with each other, and triboelectric charges are generated due to the charges transfer from one surface to the other in order to equalize electrochemical potential.…”

Section: Triboelectric Nanogeneratormentioning

confidence: 99%

Triboelectric Nanogenerators Driven Self‐Powered Electrochemical Processes for Energy and Environmental Science

Cao

Yang

Wang

et al. 2016

Advanced Energy Materials

428

191

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reduction and oxidation reactions occur at the corresponding electrode/electrolyte interface. As a result, the electrons flow orderly to do work with very high energy conversion efficiency. In the last two decades, a drastic change occurring in the world should be the rapid growth of information technology. The ever growing market of portable electrical apparatus raises the demand of portable and customized batteries as power sources. [1] Although the development of modern batteries like fuel cell and lithium ion (Li-ion) battery is also very fast, [2] monitoring, replacing and recycling trillions of batteries are especially arduous because of the vast distribution and short cycle lifetime. Besides, there are growing challenges from the dependence on limited fossil fuel, the demand of growing population and the concern about environmental degradation etc. So it is especially necessary to develop renewable power sources which are high-efficient, clean and sustainable.Triboelectrification (also named as contact electrification) is a wide effect around us, which usually needs to be prevented as the negative effect in many systems. In 2012, triboelectric nanogenerator (TENG) was invented to use triboelectricity for converting mechanical energy into electricity by Wang research group, which is a revolutionary breakthrough in the technology of energy conversion and utilization. [3] Traditional triboelectric generator can only accumulate static charges generated by triboelectrification, but there is no current unless there is a discharging. [4] However, the novel TENG can drive electrons to produce electricity via coalescing electrostatic induction with contact electrification. In the early period, TENG is mainly developed as micro-scale power source, which is used to supply for small portable electric apparatus. With the fast development of TENG, lots of work has been done to explore new approaches to effectively harvesting different forms of water power, namely macro-scale blue energy. [5] As for the development of nanotechnology, there are generally five steps in research: the fabrication of nanomaterials, the property of nanomaterials, the single nanodevice, an array of nanodevices, and the integration of system. With the new emergence of TENG, research in self-powered systems is fast expanding into many fields. [4,6] The rapid advancement of TENG gradually shifts its focus from the discrete devices to more complex integrated systems, which can perform multiple functions. Such integrated systems are expected to work sustainably Ever since the discovery of triboelectric nanogenerator (TENG) by Wang's group in January 2012, various breakthroughs have been achieved in the fundamental mechanisms of TENG as well as the demonstrated self-powered systems. TENG has shown many advantages in micro-scale energy harvesting for applications in sensors and portable devices. As a self-sufficient power source, TENG can be used in conjunction with electrochemical processes as self-powered electrochemistry without the use of exter...

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“…Since the PU and PTFE are in direct contact, the electrons will transfer from the PU surface to PTFE surface due to the triboelectrification. Therefore, the PU surface will be positively charged and the PTFE surface will be negatively charged [29]. In short-circuit condition, the moving of positively charged object (PU coated copper rod) from state I to state II will cause electrons to flow from the electrode A to the electrode B (Figure 2b) until reaching an equilibrium (Figure 2c).…”

Section: Resultsmentioning

confidence: 98%

A multi-layered interdigitative-electrodes-based triboelectric nanogenerator for harvesting hydropower

Lin

Cheng

et al. 2015

Nano Energy

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Hydropower is the most important and wildly-used renewable energy source in the environment. In this paper, we demonstrate a multi-layered triboelectric nanogenerator (TENG) to effectively harvest the water wave energy. For a single-layered TENG, interdigitive electrodes are incorporated in order to generate multiple electric outputs under water wave or water drop impact. For the collection of water wave energy, a polyurethane (PU) coated copper rod is used to roll back and forth and contact with the polytetrafluoroethylene (PTFE) film covered interdigitative electrodes. The surfaces of the PU and PTFE films are fabricated as porous structures and nanowire arrays, which provide an advantages of large contact area and efficient separation. Under one wave impact, the single-layered TENG composed of nine pairs of interdigitative electrodes can provide nine pulses of electric outputs (each pulsed output voltage is 52 V and output current density is 13.8 mA m À 2 ). The instantaneous output power density of a five-layered TENG is 1.1 W m À 2 . In addition, the PTFE film covered interdigitative electrodes has been successfully used to harvest water drop energy, whcih can also generate 9 pulses of electric outputs upon one water drop falling. All these results show the developed TENG has a potential to harvest the hydropower of ocean wave and raindrop in the near future.Please cite this article as: Z.-H. Lin, et al., A multi-layered interdigitative-electrodes-based triboelectric nanogenerator for harvesting hydropower, Nano Energy (2015), http://dx.

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Friction, tribochemistry and triboelectricity: recent progress and perspectives

Cited by 135 publications

References 155 publications

Temperature dependence of nylon and PTFE triboelectrification

Temperature dependence of nylon and PTFE triboelectrification

Triboelectric Nanogenerators Driven Self‐Powered Electrochemical Processes for Energy and Environmental Science

A multi-layered interdigitative-electrodes-based triboelectric nanogenerator for harvesting hydropower

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