An electrospun PVDF-KNN nanofiber based lead-free piezoelectric nanogenerator for mechanical energy scavenging and self-powered force sensing applications

Athira, B. S.; Surendran, Kuzhichalil Peethambharan; Chandran, Achu

doi:10.1039/d3se00880k

Cited by 6 publications

(1 citation statement)

References 56 publications

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“…Recently, Venkatesan et al developed a TENG based on NiO/PVDF electrospun NFs for energy harvester applications. Athira et al prepared a lead-free electrospun PVDF-potassium sodium niobate NF-based PENG device for self-powered force sensing applications from scavenged mechanical energy. On the other hand, Indumathy et al developed a PVDF/silane-based hyperbranched polymer (HBP)-based TENG for resource-efficient energy generation and wearable health monitoring system applications.…”

Section: Introductionmentioning

confidence: 99%

Piezoelectric and Triboelectric Contributions by Aromatic Hyperbranched Polyesters of Second-Generation/PVDF Nanofiber-Based Nanogenerators for Energy Harvesting and Wearable Electronics

Gunasekhar,

Bindhu,

Reza

et al. 2024

ACS Appl. Electron. Mater.

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Piezoelectric nanogenerators (PENGs) and triboelectric nanogenerators (TENGs) are among the emerging technologies as energy harvesters, aided by their cost-effective device architecture and ease of fabrication. The present study investigates the influence of electrospun polyvinylidene fluoride (PVDF) blended with second-generation aromatic hyperbranched polyester (Ar.HBP-G2) of varied content (0 to 40 wt % relative to PVDF content) on the electrical characteristics of PENG/TENG devices. The optimized PVDF/ Ar.HBP-G2−10-based PENG device produced an open-circuit voltage of 9.54 V, and the TENG device produced an open-circuit voltage and short-circuit current of 158 V and 1.6 μA, respectively. Further, the fabricated PENG and TENG devices were tested for real-time applications to power up portable electronic devices and human healthcare monitoring from the harvested mechanical energy. Additionally, the long-term mechanical steadiness of the TENG was also studied. The above results provide great possibilities for fabricating high-performance and cost-effective energy harvesting and wearable devices.

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Section: Introductionmentioning

confidence: 99%

Piezoelectric and Triboelectric Contributions by Aromatic Hyperbranched Polyesters of Second-Generation/PVDF Nanofiber-Based Nanogenerators for Energy Harvesting and Wearable Electronics

Gunasekhar,

Bindhu,

Reza

et al. 2024

ACS Appl. Electron. Mater.

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Electrospinning of porous polyvinylidene fluoride microspheres alloyed fibrous membrane with enlarged strain for efficient piezoelectric energy harvesting

Zhang,

Shao,

Liu

et al. 2024

Journal of Polymer Science

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Piezoelectric energy harvesters (PEHs) developed from electrospun polyvinylidene fluoride (PVDF) fibers offer flexibility and superior piezoelectric output, making them promising for self‐powered systems and sensors. Nonetheless, the electromechanical conversion efficiency of conventional electrospun PVDF fibers is impeded by their limited pressure‐strain range. Herein, elastic porous PVDF microspheres are introduced in‐situ via electrospinning to craft a piezoelectric membrane with higher compressive strain. The PVDF microspheres are uniformly embedded between the fibers in a sandwich fashion, and their dimension is easily tunable by varying spinning solution's concentration. Moreover, the micropores on the PVDF microspheres created by removing pre‐mixed SiO2 template not only elevates the β crystal content of PVDF to 82.19%, but also improves the compressibility, significantly boosting the piezoelectric output. The microsphere alloyed PVDF PEH delivers a piezoelectric output of 33.0 V and a power density of 8 μW/cm2, over 5.8 times that of conventional electrospun PVDF membrane, and can consistently charge lithium‐ion batteries. Our research unveils a novel strategic path to modify fiber structured PEHs, advancing their applications in self‐powered systems.

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Thermoelectric Power Generators and Hybrid Energy Harvesters

Anas,

Roy,

Varghese

et al. 2024

Reference Module in Materials Science and Materials Engineering

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An electrospun PVDF-KNN nanofiber based lead-free piezoelectric nanogenerator for mechanical energy scavenging and self-powered force sensing applications

Abstract: In the era of smart sensors and connected society, flexible piezoelectric nanogenerators (PENG) are potential candidates, which find applications in self-powered devices, mechanical energy scavenging, electronic skin, human-machine interface and...

Cited by 6 publications

References 56 publications

Piezoelectric and Triboelectric Contributions by Aromatic Hyperbranched Polyesters of Second-Generation/PVDF Nanofiber-Based Nanogenerators for Energy Harvesting and Wearable Electronics

Piezoelectric and Triboelectric Contributions by Aromatic Hyperbranched Polyesters of Second-Generation/PVDF Nanofiber-Based Nanogenerators for Energy Harvesting and Wearable Electronics

Electrospinning of porous polyvinylidene fluoride microspheres alloyed fibrous membrane with enlarged strain for efficient piezoelectric energy harvesting

Thermoelectric Power Generators and Hybrid Energy Harvesters

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