Modeling of electrospun PVDF/LiCl nanogenerator by the energy approach method: determining piezoelectric constant

Mokhtari, Fatemeh; Latifi, Masoud; Shamshirsaz, Mahnaz; Khelghatdoost, M.; Rahmani, Shahrzad

doi:10.1080/00405000.2017.1300219

Cited by 20 publications

(12 citation statements)

References 12 publications

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“…Many studies have reported their flexible piezoelectric energy scavengers, i.e., nanogenerators (PENGs), which have used lead-free piezoelectric nanofibers. [137,[139][140][141][142][143][144][145]149] Due to their shape and their structural properties, PVDF nanofibers are excellent candidates as active building blocks in such nano-generators. Both single PVDF nanofibers and uniaxially aligned arrays can be used to produce these nano-generators.…”

Section: Energy Harvestersmentioning

confidence: 99%

“…Fang et al [141] developed nano-generators based on PVDF electrospun fibers, which achieved voltage output between 0.43 V and 6.3 V when subjected to vibrations with frequency content from 1 Hz to 10 Hz. Hansen et al [142] Wang et al [143] proposed a bendable triboelectric and piezoelectric coupling a nano- Mokhtari et al [144,145] have introduced a compliant and lightweight nano-generator device based on PVDF nanofibers containing various additives (ZnO, CNT, LiCl, PANi). Researchers studied the influence of each different addition to the matrix to maximize the mechanical and piezoelectric properties, highlighting that the LiCl is definitely the best option.…”

Section: Energy Harvestersmentioning

confidence: 99%

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Electrospinning Piezoelectric Fibers for Biocompatible Devices

Azimi

Milazzo

Lazzeri

et al. 2019

Adv Healthcare Materials

110

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The field of nanotechnology has been gaining great success due to its potential in developing new generations of nanoscale materials with unprecedented properties and enhanced biological responses. This is particularly exciting using nanofibers, as their mechanical and topographic characteristics can approach those found in naturally occurring biological materials. Electrospinning is a key technique to manufacture ultrafine fibers and fiber meshes with multifunctional features, such as piezoelectricity, to be available on a smaller length scale, thus comparable to subcellular scale, which makes their use increasingly appealing for biomedical applications. These include biocompatible fiber-based devices as smart scaffolds, biosensors, energy harvesters and nanogenerators for the human body. This paper provides a comprehensive review of current studies focused on the fabrication of ultrafine polymeric and ceramic piezoelectric fibers specifically designed for, or with the potential to be translated toward, biomedical applications. It provides an applicative and technical overview of the biocompatible piezoelectric fibers, with actual and potential applications, an understanding of the electrospinning process, and the properties of nanostructured fibrous materials, including the available modeling approaches. Ultimately, this This article is protected by copyright. All rights reserved. 3 review aims at enabling a future vision on the impact of these nanomaterials as stimuli-responsive devices in the human body.

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Section: Energy Harvestersmentioning

confidence: 99%

Section: Energy Harvestersmentioning

confidence: 99%

Electrospinning Piezoelectric Fibers for Biocompatible Devices

Azimi

Milazzo

Lazzeri

et al. 2019

Adv Healthcare Materials

110

View full text Add to dashboard Cite

show abstract

“…Furthermore, the distance between the tip and collector also plays a role in the fiber synthesis, is table the distance varied from 10 to 30 cm, but 15 cm is considered as the optimized when the range increased from 15 to 25 cm to more bead formation observed. [91,97,[107][108][109][110][111][112][113][114][115][116][117][118][119][120][121][122]…”

Section: Surface Tensionmentioning

confidence: 99%

Electrospun Nanofibers: Materials, Synthesis Parameters, and Their Role in Sensing Applications

Kailasa

Reddy

Maurya

et al. 2021

Macro Materials & Eng

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Since the last decade, electrospinning is garnering more attention in the scientific research community, industries, applications like sensing (glucose, H 2 O 2 , dopamine, ascorbic acid, uric acid, neurotransmitter, etc.), biomedical applications (wound dressing, wound healing, skin, nerve, bone tissue engineering, and drug delivery systems), water treatment, energy harvesting, and storage applications. This review paper provides a brief overview of the electrospinning method, history of the electrospinning, factors affecting the electrospun nanofibers, and their morphology with different materials and composites (metals, metal oxides, 2D material, polymers and copolymers, carbon-based materials, etc.) used in the electrospinning technique with optical spinning parameters. Moreover, this paper deliberates the application of electrospun nanofibers and fibrous mats for sensing (electrochemical, optical, fluorescence, colorimetric, mechanical, photoelectric, mass sensitive change, resistive, ultrasensitive, etc.) in most illustrative representations. In the end, the challenges, opportunities of the electrospun nanofibers, and new direction for future progress are also discussed.

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“…In order to simulate the electromechanical properties of PNGs, the following constitutive equations were used for the finite element analysis:

T = C_{E} S - e^{T} E

D = italiceS - ε_{S} E

where T , S , E , and D represent stress, strain, electric field, and electric displacement, respectively. In addition, C E is the elasticity tensor defined as C E = SE −1 ; e is the electromechanical coupling tensor calculated by

e = {dS}_{E}^{- 1}

; and ε S is the permittivity tensor defined as

ε_{S} = ε_{T} - {dS}_{E}^{- 1} d^{T}

.…”

Section: Finite Element Simulationmentioning

confidence: 99%

Improving piezoelectric and pyroelectric properties of electrospun PVDF nanofibers using nanofillers for energy harvesting application

Abbasipour

Khajavi

Yousefi

et al. 2018

Polymers for Advanced Techs

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In this study, it was aimed to increase the piezoelectric and pyroelectric properties of electrospun polyvinylidene fluoride (PVDF) nanofibers simultaneously by using specific nanofillers. Graphene oxide (GO), graphene, and halloysite nanotubes with different concentrations (0, 0.05, 0.4, and 1.6% wt/wt) were combined with PVDF solution and were fabricated in the form of nanofibers through electrospinning. Pyroelectric properties of samples were measured by submerging sealed samples in hot water (360°K) and ice (270°K). The piezoelectric properties of the samples were evaluated through bending tests. The microstructural, mechanical, and thermal properties of the electrospun PVDF nanocomposite were investigated using scanning electron microscope, Instron instrument, and thermogravimetric analysis, respectively. To further support the experimental observations for generating electric voltage in the bended nanogenerator, the PVDF nanogenerator (PNG) was also modeled by a finite element analysis based on the theory of linear piezoelectricity using COMSOL Multiphysics simulation software. Experimental results showed that adding nanofillers could improve the piezoelectric and pyroelectric properties of all samples, associated with the increment of β-phase in the nanofibers. It was concluded that adding nanofillers could increase pyroelectricity about 50% more than piezoelectricity in pristine PVDF nanofiber web. The PNG containing 1.6 wt% GO showed the highest efficiency in terms of piezoelectricity and pyroelectricity. In addition, the results showed that the ratio of piezoelectric to pyroelectric coefficients was constant (~1.5) and it was independent of the nanofiller type and content. The effect of external force and vibration frequency on the output voltage was also investigated. Increasing the compressive force and vibration frequency caused a greater output voltage. Finally, the fabricated nanogenerator was integrated on insole and elbow to investigate its energy harvesting capabilities from body movement.

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Modeling of electrospun PVDF/LiCl nanogenerator by the energy approach method: determining piezoelectric constant

Cited by 20 publications

References 12 publications

Electrospinning Piezoelectric Fibers for Biocompatible Devices

Electrospinning Piezoelectric Fibers for Biocompatible Devices

Electrospun Nanofibers: Materials, Synthesis Parameters, and Their Role in Sensing Applications

Improving piezoelectric and pyroelectric properties of electrospun PVDF nanofibers using nanofillers for energy harvesting application

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