Flexible hybrid structure piezoelectric nanogenerator based on ZnO nanorod/PVDF nanofibers with improved output

Fakhri, Parisa; Amini, B.V.; Bagherzadeh, Roohollah; Kashfi, Mohammad; Latifi, Masoud; Yavari, Neda; Kani, S.A.P.; Kong, Lingxue

doi:10.1039/c8ra10315a

Cited by 95 publications

(69 citation statements)

References 32 publications

(24 reference statements)

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“…Some researchers have also demonstrated that incorporating piezoceramics into piezopolymers to create a hybrid material can achieve higher piezoelectric constant and excellent electromechanical coupling factor. For example, ZnO has been incorporated into or grown on PVDF to fabricate hybrid PENGs . In addition, both of piezoceramics and piezopolymers can be further optimized with nanostructures, such as nanowire, nanofiber, nanotube, and nanosheet.…”

Section: Piezoelectric Nanogeneratorsmentioning

confidence: 99%

Fiber/Fabric‐Based Piezoelectric and Triboelectric Nanogenerators for Flexible/Stretchable and Wearable Electronics and Artificial Intelligence

2019

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fields is breaking out, such as the Internet of Things (IoTs), big data, humanoid robotics, and artificial intelligence (AI). Nowadays, the rapid advancement of these functional electronic devices is transforming the way people communicate with each other and with their surroundings, which has integrated our world into an intelligent information network. Owing to that no electronics works without electricity, the processes of human informatization and intelligence depend on broad energy supplies and powerful power supports. In other words, electric power can be regarded as the flowing blood that keeps every components of the current society running normally and healthily. However, with the rapid consumption of conventional fossil fuels as well as the growing voice of environmental protection, the current energy structure and its supply status are facing unprecedented challenges. On the one hand, the overwhelming energy crisis and ecological deterioration have become huge bottlenecks restricting socioeconomic development.[1] Some serious situations may even worsen to the root of interstate interest conflicts or the disaster that threatens the survival of mankind. In this case, the transform of energy structure from scarce, pollution-prone, and irreproducible mineral resources to abundant, environmentally friendly, and renewable green energies is desperately required. On the other hand, the traditional centralized, immobile, and ordered energy supply patterns based on power plants are incompatible with the present development of functional electronics associated with individual person, which follows a general trend of miniaturization, portability, and low power. As the information age is coming, billions of things must be connected with sensors for various measurements, perceptions, controls, and data transmissions. [2] These mobile, human-oriented, randomly and massively distributed sensing networks also require the corresponding matched power supply system. Therefore, it turns out that the unreasonable energy structures as well as the mismatched supply pattern lead to the current development dilemma.Portable power supplies and self-powered systems are the most promising solutions for the above straits. For wearable power sources, one of the compromises is to choose small-size Integration of advanced nanogenerator technology with conventional textile processes fosters the emergence of textile-based nanogenerators (NGs), which will inevitably promote the rapid development and widespread applications of next-generation wearable electronics and multifaceted artificial intelligence systems. NGs endow smart textiles with mechanical energy harvesting and multifunctional self-powered sensing capabilities, while textiles provide a versatile flexible design carrier and extensive wearable application platform for their development. However, due to the lack of an effective interactive platform and communication channel between researchers specializing in NGs and those good at textiles, it is rather difficult to achieve fiber...

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Section: Piezoelectric Nanogeneratorsmentioning

confidence: 99%

Fiber/Fabric‐Based Piezoelectric and Triboelectric Nanogenerators for Flexible/Stretchable and Wearable Electronics and Artificial Intelligence

2019

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“…Nanocomposites based upon ZnO-NPs are widely used for the development of different optoelectronic, electronic, sensors, collar cells, etc., devices (see, for example [ 1 , 2 , 3 ]). Recently, there were published significant publications about the potential use of ZnO-NPs that include flexible devices such as supercapacitance [ 4 ], flexible piezoelectric nanogenerators with ZnO-polyvinylidene fluoride (PVDF) [ 5 , 6 ], piezoelectric vibration sensors based on polydimethylsiloxane (PDMS) and ZnO nanoparticle [ 7 ], soft thermoplastic material with polyurethane matrix [ 8 ], poly (ethylene oxide) and poly (vinyl pyrrolidone) blend matrix incorporated with zinc oxide (ZnO) nanoparticles for optoelectronic and microelectronic devices [ 9 ], gate transistors with ZnO and ethyl cellulose [ 10 ], chitosan-ZnO (CS-ZnO) nanocomposite for packing applications [ 11 , 12 , 13 ], CS-ZnO as antibacterial agent [ 13 , 14 , 15 ], and CS-ZnO nanocomposite for supercapacitor [ 16 ].…”

Section: Introductionmentioning

confidence: 99%

Chitosan-ZnO Nanocomposites Assessed by Dielectric, Mechanical, and Piezoelectric Properties

et al. 2020

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The aim of this work is to structurally characterize chitosan-zinc oxide nanoparticles (CS-ZnO NPs) films in a wide range of NPs concentration (0–20 wt.%). Dielectric, conductivity, mechanical, and piezoelectric properties are assessed by using thermogravimetry, FTIR, XRD, mechanical, and dielectric spectroscopy measurements. These analyses reveal that the dielectric constant, Young’s modulus, and piezoelectric constant (d33) exhibit a strong dependence on nanoparticle concentration such that maximum values of referred properties are obtained at 15 wt.% of ZnO NPs. The piezoelectric coefficient d33 in CS-ZnO nanocomposite films with 15 wt.% of NPs (d33 = 65.9 pC/N) is higher than most of polymer-ZnO nanocomposites because of the synergistic effect of piezoelectricity of NPs, elastic properties of CS, and optimum NPs concentration. A three-phase model is used to include the chitosan matrix, ZnO NPs, and interfacial layer with dielectric constant higher than that of neat chitosan and ZnO. This layer between nanoparticles and matrix is due to strong interactions between chitosan’s side groups with ZnO NPs. The understanding of nanoscale properties of CS-ZnO nanocomposites is important in the development of biocompatible sensors, actuators, nanogenerators for flexible electronics and biomedical applications.

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“…Hence, the enhanced dye degradation efficiency under the excitation of visible‐light (sunlight) has aroused due to the combination of high oxygen vacancy, enhanced visible‐light absorption and separation of charge carriers. The obtained rate of degradation efficiency of wurtzene has been compared with several state‐of‐the‐art piezocatalysts materials., [ 5–10,37–42 ] as shown in Figure 4i. The comparison demonstrates one of the best performances of the wurtzene in the present work, as compared to other reports in the literature.…”

Section: Figurementioning

confidence: 99%

Confinement Aided Simultanous Water Cleaning and Energy Harvesting Using Atomically Thin Wurtzite (Wurtzene)

Kumbhakar

Mukherjee

Pramanik

et al. 2020

Advanced Sustainable Systems

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Syntheses of few‐layered piezocatalysts from nonlayered materials have gained a huge attention of attention in recent years due to their potential applicability in efficient removal of toxic elements from water. Here, a simple scalable bottom up approach consisting of wet‐chemical synthesis method is used to produce the atomically thin (2D)‐wurtzite ZnO: “wurtzene.” The presence of a large number of well‐distributed surface defects in the synthesized wurtzene promotes the separation of charge carriers in it via the excellent piezo‐photocatalytic activity and thereby the efficiency of degradation of a test dye (namely methylene blue) is enhanced by ≈5 times. By taking an innovative approach, a piezoelectric driven power cell is also fabricated by using the wurtzene and the highest open circuit voltage is found out to be ≈40 V at 1.0 kPa of applied periodic pressure. The experimental observations are explained with density functional theory calculation. The confinement effect due to reduced dimension plays a crucial role in the wurtzene's excellent piezoelectric response. It is envisioned that the present findings will provided a clear insight into the synthesis of wurtzene with surface defects for highly efficient sunlight driven photocatalytic activity as well as piezoelectric energy harvesting.

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Flexible hybrid structure piezoelectric nanogenerator based on ZnO nanorod/PVDF nanofibers with improved output

Abstract: A novel hybrid piezoelectric structure based on electrospun PVDF NFs and vertically grown ZnO nanorods is presented as a promising nanogenerator to convert mechanical movement more efficiently into electricity for practical applications.

Cited by 95 publications

References 32 publications

Fiber/Fabric‐Based Piezoelectric and Triboelectric Nanogenerators for Flexible/Stretchable and Wearable Electronics and Artificial Intelligence

Fiber/Fabric‐Based Piezoelectric and Triboelectric Nanogenerators for Flexible/Stretchable and Wearable Electronics and Artificial Intelligence

Chitosan-ZnO Nanocomposites Assessed by Dielectric, Mechanical, and Piezoelectric Properties

Confinement Aided Simultanous Water Cleaning and Energy Harvesting Using Atomically Thin Wurtzite (Wurtzene)

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