The Progress of PVDF as a Functional Material for Triboelectric Nanogenerators and Self-Powered Sensors

Lee, Jin Pyo; Lee, Jae Won; Baik, Jeong Min

doi:10.3390/mi9100532

Cited by 74 publications

(59 citation statements)

References 70 publications

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“…Furthermore, polymer crystallinity and surface potential can be tailored to enhance power output and adjust mechanical properties. 38 , 39 An ideal one-step method to achieve such structural engineering is electrospinning. In this process, a high voltage is used to create an electric field between a nozzle and a collector.…”

Section: Introductionmentioning

confidence: 99%

Triboelectric Yarns with Electrospun Functional Polymer Coatings for Highly Durable and Washable Smart Textile Applications

Busolo

Szewczyk

Nair

et al. 2021

ACS Appl. Mater. Interfaces

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Triboelectric generators are excellent candidates for smart textiles applications due to their ability to convert mechanical energy into electrical energy. Such devices can be manufactured into yarns by coating a conductive core with a triboelectric material, but current triboelectric yarns lack the durability and washing resistance required for textile-based applications. In this work, we develop a unique triboelectric yarn comprising a conducting carbon nanotube (CNT) yarn electrode coated with poly(vinylidene fluoride) (PVDF) fibers deposited by a customized electrospinning process. We show that the electrospun PVDF fibers adhere extremely well to the CNT core, producing a uniform and stable triboelectric coating. The PVDF–CNT coaxial yarn exhibits remarkable triboelectric energy harvesting during fatigue testing with a 33% power output improvement and a peak power density of 20.7 μW cm –2 after 200 000 fatigue cycles. This is potentially due to an increase in the active surface area of the PVDF fiber coating upon repeated contact. Furthermore, our triboelectric yarn meets standard textile industry benchmarks for both abrasion and washing by retaining functionality over 1200 rubbing cycles and 10 washing cycles. We demonstrate the energy harvesting and motion sensing capabilities of our triboelectric yarn in prototype textile-based applications, thereby highlighting its applicability to smart textiles.

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Section: Introductionmentioning

confidence: 99%

Triboelectric Yarns with Electrospun Functional Polymer Coatings for Highly Durable and Washable Smart Textile Applications

Busolo

Szewczyk

Nair

et al. 2021

ACS Appl. Mater. Interfaces

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“…Polyvinylidene fluoride (PVDF) has received great attention as a semicrystalline polymer for its good mechanical robustness and functionality in comparison with singlecrystalline materials [11][12][13]. PVDF is known to exhibit ferroelectric, piezoelectric, and pyroelectric behavior, which makes it useful in many electronic devices and energy harvesting systems [14][15][16]. Largely, PVDF exhibits four different phases, namely α, β, γ, and δ depending on its molecular arrangement.…”

Section: Introductionmentioning

confidence: 99%

Light-induced reversible phase transition in polyvinylidene fluoride-based nanocomposites

Viswanath

Yoshimura

2019

SN Appl. Sci.

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We report switching behavior between the ferroelectric β phase and the paraelectric α phase in polyvinylidene fluoridemultiwalled carbon nanotube (PVDF-CNT) nanocomposite. The PVDF-CNT nanocomposite thin films are prepared on Au/Si substrates using spin coating technique. Various characterization techniques reveal the interaction of PVDF with CNTs as a nucleating agent for nucleating ferroelectric β phase in PVDF. A wavelength-independent reversible phase transformation behavior is observed for the PVDF-CNT nanocomposite during the measurement of laser power modulated micro-Raman spectroscopy (533 and 632 nm lasers). This observation opens up an innovative route where we can control the interactions between polar nanocarbons and PVDF using visible light.

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“…However, it is difficult to find a material pair capable of conferring both properties. For instance, polyvinylidene difluoride (PVDF) is an intensely negative triboelectric material [23] (due to the high work function of the fluorine atoms [28][29][30][31]), but it has high permittivity.…”

Section: Introductionmentioning

confidence: 99%

Triboelectric Nanogenerator With Enhanced Performance via an Optimized Low Permittivity Substrate

et al. 2020

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With electrical power generated from mechanical contact, triboelectric nanogenerators (TENGs) offer a promising route to realizing self-powered sensors. For effective usage, it is important to improve their limited power range (0.1-100 mW/cm 2 ) and this can be achieved by optimizing the output performance. Among the factors that confer higher performance are materials with a strong triboelectric effect together with low permittivity, but it is challenging to optimize both within a single material. This paper presents a solution to this challenge by optimizing a low permittivity substrate beneath the tribo-contact layer. Results are simulated over a range of substrate permittivities. The open circuit voltage is found to increase by a factor of 1.6 in moving from PVDF to the lower permittivity PTFE. Two TENG devices have been fabricated with 100 PET and PTFE substrates to compare performance. The experiments confirm that lowering the substrate dielectric constant (i.e. PET to PTFE) raises the open circuit voltage in line with simulation predictions.

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The Progress of PVDF as a Functional Material for Triboelectric Nanogenerators and Self-Powered Sensors

Cited by 74 publications

References 70 publications

Triboelectric Yarns with Electrospun Functional Polymer Coatings for Highly Durable and Washable Smart Textile Applications

Triboelectric Yarns with Electrospun Functional Polymer Coatings for Highly Durable and Washable Smart Textile Applications

Light-induced reversible phase transition in polyvinylidene fluoride-based nanocomposites

Triboelectric Nanogenerator With Enhanced Performance via an Optimized Low Permittivity Substrate

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