Triboelectric energy harvesting in harsh conditions: Temperature and pressure effects in methane and crude oil environments

Rodrigues, C.; Kumar, Manish; Proença, Mariana P.; Gutierrez, Jose Nicolas Melchor; Melo, Ricardo Cesar Bezerra De; Pereira, Ana; Ventura, J.

doi:10.1016/j.nanoen.2020.104682

Cited by 28 publications

(22 citation statements)

References 48 publications

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“…Due to the wide range of materials selection, TENGs can also be used as wearable sensors or skin attachable devices [19][20][21][22]. By employing robust materials from the broad material choices, TENGs also can generate electricity in relatively harsh conditions [23][24][25].…”

Section: Introductionmentioning

confidence: 99%

3D Printed Double Roller-Based Triboelectric Nanogenerator for Blue Energy Harvesting

Kim

2021

Micromachines

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The ocean covers 70% of the earth’s surface and is one of the largest uncultivated resources still available for harvesting energy. The triboelectric energy harvesting technology has the potential to effectively convert the ocean’s “blue energy” into electricity. A half-cylinder structure including rollers floating on the water has already been used, in which the pendulum motion of the rollers is driven by the waveform. For the stable motion of the rollers, the printed surface of the device was treated with acetone for attaining hydrophilicity. The electrical outputs with the proposed device were enhanced by increasing the contact surface area by simply implementing the double roller structure with double side-covered electrodes. With the optimized structure, the maximum power density reached a value of 69.34 µW m−2 at a load resistance of 200 MΩ with the device’s high output durability. Finally, the fabricated device was also applied to the artificial water waves to demonstrate the possibility of using this device in the ocean. By simply modifying the electrode structure and adding a roller, this device demonstrated the ability to generate over 160% of electrical output with the same covered area of the ocean by the triboelectric nanogenerators (TENGs) and potential ocean application.

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Section: Introductionmentioning

confidence: 99%

3D Printed Double Roller-Based Triboelectric Nanogenerator for Blue Energy Harvesting

Kim

2021

Micromachines

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“… 8 , 31 − 37 It has been found that electron transfer is the dominating mechanism for the triboelectrification process in solid–solid cases, 38 so lubricating oils with no ions can generate a certain amount of charges by electron transfer between oil–solid interfaces. 39 , 40 …”

mentioning

confidence: 99%

Real-Time and Online Lubricating Oil Condition Monitoring Enabled by Triboelectric Nanogenerator

et al. 2021

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An intelligent monitoring lubricant is essential for the development of smart machines because unexpected and fatal failures of critical dynamic components in the machines happen every day, threatening the life and health of humans. Inspired by the triboelectric nanogenerators (TENGs) work on water, we present a feasible way to prepare a self-powered triboelectric sensor for real-time monitoring of lubricating oils via the contact electrification process of oil–solid contact (O–S TENG). Typical intruding contaminants in pure base oils can be successfully monitored. The O–S TENG has very good sensitivity, which even can respectively detect at least 1 mg mL –1 debris and 0.01 wt % water contaminants. Furthermore, the real-time monitoring of formulated engine lubricating oil in a real engine oil tank is achieved. Our results show that electron transfer is possible from an oil to solid surface during contact electrification. The electrical output characteristic depends on the screen effect from such as wear debris, deposited carbons, and age-induced organic molecules in oils. Previous work only qualitatively identified that the output ability of liquid can be improved by leaving less liquid adsorbed on the TENG surface, but the adsorption mass and adsorption speed of liquid and its consequences for the output performance were not studied. We quantitatively study the internal relationship between output ability and adsorbing behavior of lubricating oils by quartz crystal microbalance with dissipation (QCM-D) for liquid–solid contact interfaces. This study provides a real-time, online, self-powered strategy for intelligent diagnosis of lubricating oils.

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“…On the other hand, for the highest temperatures, the generated electrical outputs decrease due to a competition between triboelectrification and electron thermionic emission, which leads to a decrease of the amount of static tribo‐charges at the dielectric surfaces. [ 33,38 ]…”

Section: Tm‐teng Electrical Performancementioning

confidence: 99%

Hybridizing Triboelectric and Thermomagnetic Effects: A Novel Low‐Grade Thermal Energy Harvesting Technology

Rodrigues

Pires

Gonçalves

et al. 2022

Adv Funct Materials

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Developing new energy generation technologies able to effectively convert low-grade thermal energy into electricity is an urgent necessity to tackle the continuous surge in energy demand and mitigate climate change. Here, a hybrid device that couples triboelectric and thermomagnetic effects to generate electrical power in the presence of small temperature gradients near room temperature is demonstrated. The thermomagnetic effect allows to induce the periodic and sustained motion of a second-order ferromagnetic material in temperature gradients below 30 °C. This mechanical motion is then converted into electrical energy using a low-cost triboelectric nanogenerator (TENG). The applicability of this concept is demonstrated in a broad range of operating temperatures in both the cold (15 to 37 °C) and hot (60 to 90 °C) sides. It is further shown that the electrical power generated by the hybrid TENG is more than 35× higher than that obtained by a conventional thermomagnetic generator driven by magnetic induction. The obtained results show that this implementation is a feasible thermal energy conversion technology, further expanding the applicability of triboelectricity into the realm of room temperature thermal harvesting.

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Triboelectric energy harvesting in harsh conditions: Temperature and pressure effects in methane and crude oil environments

Cited by 28 publications

References 48 publications

3D Printed Double Roller-Based Triboelectric Nanogenerator for Blue Energy Harvesting

3D Printed Double Roller-Based Triboelectric Nanogenerator for Blue Energy Harvesting

Real-Time and Online Lubricating Oil Condition Monitoring Enabled by Triboelectric Nanogenerator

Hybridizing Triboelectric and Thermomagnetic Effects: A Novel Low‐Grade Thermal Energy Harvesting Technology

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