Enhanced piezoelectric output of the PVDF-TrFE/ZnO flexible piezoelectric nanogenerator by surface modification

Li, Jie; Zhao, Chunmao; Xia, Kai; Liu, Xi; Liu, Dong; Han, Jing

doi:10.1016/j.apsusc.2018.08.266

Cited by 155 publications

(93 citation statements)

References 47 publications

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“…The incorporation of hydroxyapatite (HA) decreased the crystallinity and fraction of β-phase in HA/PVDF nanofibers [30]. Similar results were reported by Li et al [41] where fraction of β-phase significantly dropped with unmodified zinc oxide (ZnO) nanoparticles mainly due to their agglomeration. The hybrid nanofillers produce synergistic effects in polymers that are useful to improve mechanical properties; however, when ZnO nanorods and graphene nanoplatelets were incorporated into PVDF along with hydrated metal salts, a drastic reduction in d 33 was recorded [42].…”

Section: Nanofillerssupporting

confidence: 73%

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Solution Blow Spinning of Polyvinylidene Fluoride Based Fibers for Energy Harvesting Applications: A Review

et al. 2020

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Polyvinylidene fluoride (PVDF)-based piezoelectric materials (PEMs) have found extensive applications in energy harvesting which are being extended consistently to diverse fields requiring strenuous service conditions. Hence, there is a pressing need to mass produce PVDF-based PEMs with the highest possible energy harvesting ability under a given set of conditions. To achieve high yield and efficiency, solution blow spinning (SBS) technique is attracting a lot of interest due to its operational simplicity and high throughput. SBS is arguably still in its infancy when the objective is to mass produce high efficiency PVDF-based PEMs. Therefore, a deeper understanding of the critical parameters regarding design and processing of SBS is essential. The key objective of this review is to critically analyze the key aspects of SBS to produce high efficiency PVDF-based PEMs. As piezoelectric properties of neat PVDF are not intrinsically much significant, various additives are commonly incorporated to enhance its piezoelectricity. Therefore, PVDF-based copolymers and nanocomposites are also included in this review. We discuss both theoretical and experimental results regarding SBS process parameters such as solvents, dissolution methods, feed rate, viscosity, air pressure and velocity, and nozzle design. Morphological features and mechanical properties of PVDF-based nanofibers were also discussed and important applications have been presented. For completeness, key findings from electrospinning were also included. At the end, some insights are given to better direct the efforts in the field of PVDF-based PEMs using SBS technique.

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Section: Nanofillerssupporting

confidence: 73%

“… Fraction of β-phase obtained with different additives and copolymers [ 41 , 46 , 47 , 48 , 49 , 50 , 51 , 52 , 53 , 54 ]. …”

Section: Figurementioning

confidence: 99%

Solution Blow Spinning of Polyvinylidene Fluoride Based Fibers for Energy Harvesting Applications: A Review

et al. 2020

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“…Inorganic piezoelectric materials perform better because they lack central symmetry in their crystal structures, leading dipole‐induced ions to be reconfigured, and they convert mechanical energy to electric energy under external strain . Common inorganic piezoelectric materials include barium titanate (BTO), zinc oxide (ZnO), lead zirconate titanate (PZT), and bismuth titanate (BiT) . Among them, PZT exhibits superior electromechanical properties, such as great sensitivity, large dielectric constants, high operating temperature, and relatively inexpensive manufacturing.…”

Section: Introductionmentioning

confidence: 99%

Flexible Piezoelectric Nanofibers/Polydimethylsiloxane‐Based Pressure Sensor for Self‐Powered Human Motion Monitoring

Hou

Zhang

et al. 2020

Energy Tech

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Self‐powered wearable devices have attracted significantly increased attention in human motion monitoring. These flexible physical sensors conformally attach to the surface of the skin to provide new applications in human‐activity monitoring. Herein, a highly ﬂexible and self‐powered piezoelectric pressure sensor for real‐time human motion detecting using a piezoelectric thin film with high filling ratio of lead zirconate titanate (PZT) nanofibers (NFs) in polydimethylsiloxane (PDMS) is reported. Due to the large dielectric constant of PZT and elastic properties of PDMS, the sensor performs in a wide linear region (1.25–250 kPa) with great linearity (pressure–voltage 0.9909) and good reproducibility over 2000 cycles. Using the sensor, various human body motions are detected, including joint bending, subtle/large wrist deformations, wrist and some common sporting movements. In addition, a sensor array is successfully developed to realize motion tracking, showing strong potential for application in personal recognition.

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“…Among these metal oxides, ZnO perfectly matches with the desired properties of optoelectronics due to its higher electron mobility compared to the other metal oxides, excellent stability, and large exciton binding energy (60 meV) 13,14 . Hence, it has been used in several optoelectronic application areas including light-emitting diodes, panel displays, sensors 15 , photodetectors 16 , piezoelectrical applications 17 , and solar cells 18 . A variety of synthesis techniques have been employed for the formation of ZnO nanostructures 19–22 .…”

Section: Introductionmentioning

confidence: 99%

Investigation of Strain Effects on Photoelectrochemical Performance of Flexible ZnO Electrodes

Abdullayeva

Altaf

Mintas

et al. 2019

Sci Rep

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In this report, the growth of zinc oxide (ZnO) nanocrystals with various morphologies, nanoflower, nanosheet, and nanorod, on flexible stainless steel (SS) foils to be utilized as photoanodes in photoelectrochemical (PEC) solar cells has been presented. It has been aimed to provide flexibility and adaptability for the next generation systems with the incorporation of SS foils as electrode into PEC cells. Therefore, physical deformation tests have been applied to the prepared ZnO thin film photoanodes. These thin films have been thoroughly characterized before and after straining for better understanding the relationship between the morphology, straining effect and photoelectrochemical efficiency. We observed a notable increase in the maximum incident photon-to-current efficiency (IPCE) and durability of all ZnO photoelectrodes after straining process. The increase in IPCE values by 1.5 and 2.5 folds at 370 nm has been observed for nanoflower and nanorod morphologies, respectively after being strained. The maximum IPCE of 69% has been calculated for the ZnO nanorod structures after straining. Bending of the SS electrodes resulted in the more oriented nanorod arrays compared to its flat counterpart, which improved both the light absorption and also the photo-conversion efficiency drastically. The finite-difference time-domain simulations have also been carried out to examine the optical properties of flat and bent ZnO electrodes. Finally, it has been concluded that SS photoanodes bearing ZnO semiconducting material with nanoflower and nanorod morphologies are very promising candidates for the solar hydrogen generator systems in terms of efficiency, durability, flexibility, and lightness in weight.

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Enhanced piezoelectric output of the PVDF-TrFE/ZnO flexible piezoelectric nanogenerator by surface modification

Cited by 155 publications

References 47 publications

Solution Blow Spinning of Polyvinylidene Fluoride Based Fibers for Energy Harvesting Applications: A Review

Solution Blow Spinning of Polyvinylidene Fluoride Based Fibers for Energy Harvesting Applications: A Review

Flexible Piezoelectric Nanofibers/Polydimethylsiloxane‐Based Pressure Sensor for Self‐Powered Human Motion Monitoring

Investigation of Strain Effects on Photoelectrochemical Performance of Flexible ZnO Electrodes

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