Method for fabricating highly crystalline polyvinylidene fluoride for piezoelectric energy-harvesting and vibration sensor applications

Raj, Nirmal Prashanth Maria Joseph; Abisegapriyan, K S; Khandelwal, Gaurav; Kim, Sang‐Jae

doi:10.1039/d1se01139a

Cited by 12 publications

(4 citation statements)

References 34 publications

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“…The peak‐to‐peak voltage output of 23.5 V was comparable, or higher, than equivalent voltage outputs from state‐of‐the‐art fluoropolymer piezoelectric nanogenerators with an equivalent 10 N of force ( Table 1 ). [ 34–45 ]…”

Section: Resultsmentioning

confidence: 99%

Recycled Polystyrene Waste to Triboelectric Nanogenerators: Volumetric Electromechanically Responsive Laminates from Same‐Material Contact Electrification

Šutka,

Dundurs

et al. 2024

Adv Energy and Sustain Res

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Millions of tonnes of polystyrene (PS) are produced annually, with only an estimated 12% being recycled. Herein, the upcycling of expanded or foamed PS waste into electromechanically responsive triboelectric laminates (TLs) is described. These TLs possess internal triboelectric dipoles offering an alternative to ferroelectric fluoropolymers, and, when manufactured into triboelectric nanogenerators (TENGs), are able to generate over 200 V and 12 μA from motion. This energy harvesting is enabled by electrospinning alternating layers of small and large diameter PS fibers, which upon friction establish an effective dipole moment within the TL. The PS‐TENG shows remarkable stability and is able to charge a 0.47 μF capacitor to 15 V in 200 s of vibration from same material contact electrification, with piezoelectric contact‐mode testing showing that a single PS laminate is comparable to state‐of‐the‐art piezoelectric fluoropolymers for overall electromechanical conversion.

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Section: Resultsmentioning

confidence: 99%

Recycled Polystyrene Waste to Triboelectric Nanogenerators: Volumetric Electromechanically Responsive Laminates from Same‐Material Contact Electrification

Šutka,

Dundurs

et al. 2024

Adv Energy and Sustain Res

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“…Reproduced with permission. [ 128 ] Copyright 2022, Royal Society of Chemistry. d) Fabrication of the piezoelectric PVDF films using FFF and voltage generated by a polarized printed piezoelectric PVDF sensor at different actuating frequencies of 0.1, 0.5, 1, 5, 10, 20, 30, and 40 Hz.…”

Section: Piezoelectric Sensors In Vibration Monitoringmentioning

confidence: 99%

“…The device was utilized to convert sonicator‐induced vibration, resulting in an output of 1.2 V/20 nA for the sonicator in degas mode (Figure 6c ). [ 128 ] The fused filament fabrication (FFF) technique and two post‐treatments process including mechanical stretching and electrical poling were used to fabricate PVDF film for vibration monitoring. The d 33 value of the fabricated film has been substantially enhanced by ≈10–100 times higher than the printed film without doing any post‐treatment.…”

Section: Piezoelectric Sensors In Vibration Monitoringmentioning

confidence: 99%

Advances in Wearable Piezoelectric Sensors for Hazardous Workplace Environments

et al. 2023

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Recent advances in wearable energy harvesting technology as solutions to occupational health and safety programs are presented. Workers are often exposed to harmful conditions-especially in the mining and construction industries-where chronic health issues can emerge over time. While wearable sensors technology can aid in early detection and long-term exposure tracking, powering them and the associated risks are often an impediment for their widespread use, such as the need for frequent charging and battery safety. Repetitive vibration exposure is one such hazard, e.g., whole body vibration, yet it can also provide parasitic energy that can be harvested to power wearable sensors and overcome the battery limitations. This review can critically analyze the vibration effect on workers' health, the limitations of currently available devices, explore new options for powering different personal protective equipment devices, and discuss opportunities and directions for future research. The recent progress in self-powered vibration sensors and systems from the perspective of the underlying materials, applications, and fabrication techniques is reviewed. Lastly, the challenges and perspectives are discussed for reference to the researchers who are interested in self-powered vibration sensors.

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“…The closed and open symbols are for square‐wave and continuous deformation, respectively. The data in (a) and (b) are from references for twistrons, [ 23,24 ] PENGs, [ 149–171 ] and TENGs. [ 172–205 ]…”

Section: Comparison Of the Performance Of Alternative Harvestersmentioning

confidence: 99%

Recent Advances in Carbon Nanotube‐Based Energy Harvesting Technologies

Bao

Zhang

et al. 2023

Advanced Materials

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There has been enormous interest in technologies that generate electricity from ambient energy such as solar, thermal, and mechanical energy, due to their potential for providing sustainable solutions to the energy crisis. One driving force behind the search for new energy‐harvesting technologies is the desire to power sensor networks and portable devices without batteries, such as self‐powered wearable electronics, human health monitoring systems, and implantable wireless sensors. Various energy harvesting technologies have been demonstrated in recent years. Among them, electrochemical, hydroelectric, triboelectric, piezoelectric, and thermoelectric nanogenerators have been extensively studied because of their special physical properties, ease of application, and sometimes high obtainable efficiency. Multifunctional carbon nanotubes (CNTs) have attracted much interest in energy harvesting because of their exceptionally high gravimetric power outputs and recently obtained high energy conversion efficiencies. Further development of this field, however, still requires an in‐depth understanding of harvesting mechanisms and boosting of the electrical outputs for wider applications. We here comprehensively review various CNT‐based energy harvesting technologies, focusing on working principles, typical examples, and future improvements. The last section discusses the existing challenges and future directions of CNT‐based energy harvesters.This article is protected by copyright. All rights reserved

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Method for fabricating highly crystalline polyvinylidene fluoride for piezoelectric energy-harvesting and vibration sensor applications

Abstract: The present work focused on forming highly crystalline polyvinylidene fluoride (PVDF) films and applying them to energy-harvesting and sensor applications. Bar-coated PVDF thin films with the loading of Bi0.5Na0.5TiO3 (BNT)...

Cited by 12 publications

References 34 publications

Recycled Polystyrene Waste to Triboelectric Nanogenerators: Volumetric Electromechanically Responsive Laminates from Same‐Material Contact Electrification

Recycled Polystyrene Waste to Triboelectric Nanogenerators: Volumetric Electromechanically Responsive Laminates from Same‐Material Contact Electrification

Advances in Wearable Piezoelectric Sensors for Hazardous Workplace Environments

Recent Advances in Carbon Nanotube‐Based Energy Harvesting Technologies

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