Piezoelectric Nanogenerator Based on Electrospun Cellulose Acetate/Nanocellulose Crystal Composite Membranes for Energy Harvesting Application

Sun, Bolun; Chao, Danming

doi:10.1007/s40242-021-1252-x

Cited by 8 publications

(3 citation statements)

References 49 publications

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“…The output electrical signal of the PVDF/CA EFM nanogenerator showed a trend of increasing first and then decreasing with an increase in the proportion of CA, indicating that adding an appropriate amount of CA could improve the piezoelectric performance of PVDF EFMs. The addition of a small amount of CA may have increased the polarization of the spinning solution and, thus, promote polar β-phase generation in PVDF, whereas an excess of CA may have inhibited the orientation along the fiber axis and correspondingly reduced the F(β) value of PVDF/CA [ 39 , 40 ]. Moreover, the piezoelectric output had a positive correlation with the F(β) value in PVDF, which verified that the β-phase in PVDF is the key component of piezoelectricity.…”

Section: Resultsmentioning

confidence: 99%

Piezoelectric Nanogenerator Based on Electrospinning PVDF/Cellulose Acetate Composite Membranes for Energy Harvesting

Zhang

et al. 2022

Materials

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The organic piezoelectric polymer polyvinylidene fluoride (PVDF) has attracted extensive research because of its excellent flexibility and mechanical energy-harvesting properties. Here, the electrospinning technique was taken to fabricate synthesized fiber membranes of a PVDF/cellulose acetate (CA) composite. The obtained PVDF/CA electrospun fiber membranes (EFMs) were employed to prepare a flexible nanogenerator. XRD and FTIR spectroscopy revealed the enhancement of piezoelectric behavior due to an increase in β-phase in PVDF/CA EFMs compared with cast films. The PVDF/CA fibers (mass ratio of PVDF to CA = 9:1) showed an output voltage of 7.5 V and a short-circuit current of 2.1 μA under mechanical stress of 2 N and frequency of 1 Hz, which were 2.5 and two times greater than those of the pure PVDF fibers, respectively. By charging a 4.7 µF capacitor for 15 min with the voltage generated by the PVDF/CA EFMs, nine LED lamps could be lit. The work provides an effective approach to enhancing the piezoelectric effects of PVDF for low-power electronic loading of macromolecule polymers.

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Section: Resultsmentioning

confidence: 99%

Piezoelectric Nanogenerator Based on Electrospinning PVDF/Cellulose Acetate Composite Membranes for Energy Harvesting

Zhang

et al. 2022

Materials

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“…Here, PVDF yarns have proven to outperform meshes, achieving a fog WCR of 365 mg cm À2 h À1 , compared to 115 mg cm À2 h À1 for meshes. This superior performance can be attributed to the unhindered movement of droplets along the yarns, facilitating faster and [11,21,32,48,49,52,[65][66][67][68][69][70][71][72][73][74][75][76][77][78][79][80] red circle indicates other works voltage, black square indicates other works water collection rate, the red star indicates this works voltage, and the black star indicates this works water collection rate. more efficient fog water collection.…”

Section: Discussionmentioning

confidence: 99%

“…c) Charging of a 10 μF capacitor using PVDF meshes and d) PVDF yarns. e) Summary of fog water collection rate and capacitor charging of different materials from the following:[11,21,32,48,49,52,[65][66][67][68][69][70][71][72][73][74][75][76][77][78][79][80] red circle indicates other works voltage, black square indicates other works water collection rate, the red star indicates this works voltage, and the black star indicates this works water collection rate.…”

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confidence: 99%

Multifunctional Piezoelectric Yarns and Meshes for Efficient Fog Water Collection, Energy Harvesting, and Sensing

Parisi,

Szewczyk,

Narayan

et al. 2024

Small Science

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Given global water scarcity and the quest for sustainable energy, there's a pressing need for integrated approaches addressing water‐energy interdependence worldwide. A practical approach for this challenge involves the implementation of fog water collectors. Herein, a polyvinylidene fluoride (PVDF) multifunctional device capable of harvesting water and electricity from wind is developed and tested, collecting up to 365 mg cm−2 h−1 of fog water. Due to the piezoelectric nature of electrospun PVDF, these yarns and meshes not only serve as piezoelectric sensors, enabling the detection of incoming fog flow and determination of its speed and, bust also harvest electricity by charging a capacitor, making it a green and renewable power source. In this study, promising insights are offered into developing efficient fog water collection methods and utilizing piezoelectric fiber‐based yarns and meshes for multifunctional applications in sustainable water management, energy harvesting, and sensing in a single device.

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Enhanced Hydrogen Evolution in Porous and Hybrid g‐C₃N₄/Pt‐PVDF Electrospun Membranes via Piezoelectricity from Water Flow Energy

Chen,

Hu,

Wang

et al. 2024

Adv Funct Materials

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Inspired from seaweed swayed by waves, the enhanced hydrogen evolution is realized in porous and hybrid g‐C3N4/Pt‐PVDF electrospun membranes via piezoelectricity from water flow energy. The membranes are fabricated by dispersing g‐C3N4/Pt into the mixed solution of PVDF and PEO, followed by electrospinning and selective removal of PEO. By changing the PEO amount, the pore size in nanofibers is adjusted. Due to the hydrogen bonding between g‐C3N4/Pt and PVDF, the β phase of PVDF is increased, beneficial for the piezoelectricity performance. When the electrospun membranes are exposed to water flow, an additional potential field is triggered due to the deformation of PVDF. It not only eases the photogeneration of charge carriers from g‐C3N4/Pt but also hinders their recombination. The prolonged lifetime significantly improves the photocatalytic water splitting of g‐C3N4/Pt under visible light. The hydrogen evolution in the electrospun membranes (PVDF to PEO = 4:1) is profoundly improved to 9 278 µmol h−1 g−1, almost doubled to the pure g‐C3N4/Pt nanosheets (5 220 µmol h−1 g−1). Therefore, the seaweed‐inspired electrospun membrane is a promising strategy for the efficiently photocatalytic water splitting via g‐C3N4 in an aqueous environment, such as a natural sea and lake, by the piezoelectricity gained from the water flow energy.

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Piezoelectric Nanogenerator Based on Electrospun Cellulose Acetate/Nanocellulose Crystal Composite Membranes for Energy Harvesting Application

Cited by 8 publications

References 49 publications

Piezoelectric Nanogenerator Based on Electrospinning PVDF/Cellulose Acetate Composite Membranes for Energy Harvesting

Piezoelectric Nanogenerator Based on Electrospinning PVDF/Cellulose Acetate Composite Membranes for Energy Harvesting

Multifunctional Piezoelectric Yarns and Meshes for Efficient Fog Water Collection, Energy Harvesting, and Sensing

Enhanced Hydrogen Evolution in Porous and Hybrid g‐C₃N₄/Pt‐PVDF Electrospun Membranes via Piezoelectricity from Water Flow Energy

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Piezoelectric Nanogenerator Based on Electrospun Cellulose Acetate/Nanocellulose Crystal Composite Membranes for Energy Harvesting Application

Cited by 8 publications

References 49 publications

Piezoelectric Nanogenerator Based on Electrospinning PVDF/Cellulose Acetate Composite Membranes for Energy Harvesting

Piezoelectric Nanogenerator Based on Electrospinning PVDF/Cellulose Acetate Composite Membranes for Energy Harvesting

Multifunctional Piezoelectric Yarns and Meshes for Efficient Fog Water Collection, Energy Harvesting, and Sensing

Enhanced Hydrogen Evolution in Porous and Hybrid g‐C3N4/Pt‐PVDF Electrospun Membranes via Piezoelectricity from Water Flow Energy

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Product

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Enhanced Hydrogen Evolution in Porous and Hybrid g‐C₃N₄/Pt‐PVDF Electrospun Membranes via Piezoelectricity from Water Flow Energy