Flexible piezoelectric nanogenerators using metal-doped ZnO-PVDF films

Jin, Congran; Hao, Nanjing; Xü, Zhe; Trase, Ian; Nie, Yuan; Dong, Lin; Closson, Andrew B.; Chen, Zi; Zhang, John X. J.

doi:10.1016/j.sna.2020.111912

Cited by 111 publications

(54 citation statements)

References 43 publications

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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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Section: Introductionmentioning

confidence: 99%

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

et al. 2020

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“…On the material side, in addition to conventional piezo materials, high-performance metal-doped piezoceramic nanoparticle can be exploited, such as lithium (Li)-doped ZnO nanoparticles, to improve its power generation efficiency. [27,28] ZnO with the wurtzite crystal structure can be doped with Li ions to reveal significantly improved piezoelectric property, because Li-doped ZnO can be poled under high electric field to maximize piezoelectric coefficient (d 33 ) owing to its ferroelectricity. In the meantime, ZnO nanoparticles of different shapes are proven to exhibit different voltage output performance.…”

Section: Resultsmentioning

confidence: 99%

Implantable Cardiac Kirigami‐Inspired Lead‐Based Energy Harvester Fabricated by Enhanced Piezoelectric Composite Film

Xü

Jin

Cabe

et al. 2021

Adv Healthcare Materials

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Harvesting biomechanical energy to power implantable electronics such as pacemakers has been attracting great attention in recent years because it replaces conventional batteries and provides a sustainable energy solution. However, current energy harvesting technologies that directly interact with internal organs often lack flexibility and conformability, and they usually require additional implantation surgeries that impose extra burden to patients. To address this issue, here a Kirigami inspired energy harvester, seamlessly incorporated into the pacemaker lead using piezoelectric composite films is reported, which not only possesses great flexibility but also requires no additional implantation surgeries. This lead-based device allows for harvesting energy from the complex motion of the lead caused by the expansion-contraction of the heart. The device's Kirigami pattern has been designed and optimized to attain greatly improved flexibility which is validated via finite element method (FEM) simulations, mechanical tensile tests, and energy output tests where the device shows a power output of 2.4 µW. Finally, an in vivo test using a porcine model reveals that the device can be implanted into the heart straightforwardly and generates voltages up to ≈0.7 V. This work offers a new strategy for designing flexible energy harvesters that power implantable electronics.

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“…Figure 4e shows the fabrication process of the device. They respectively studied and compared the voltage output of pure ZnO-PVDF samples and ZnO-PVDF composites doped with sodium (Na), cobalt (Co), silver (Ag), ferric oxide (Fe3O4), and lithium (Li) [119].…”

Section: Conductive Nanomaterials Doped In Pvdfmentioning

confidence: 99%

“…(a) The SEM of BTO/P(VDF-TrFE) nanocomposite fiber[97]; (b) PVDF-PZT nanocomposite fiber, the crystallization mechanism, and β-phase formation based on adding PZT[11]; (c) Change of piezoelectric coefficient in the form of output voltage under different light conditions[105]; (d)Output voltage and current signal of GFO-PVDF composite films[115]; (e) Schematic of the manufacturing process of the device[119].…”

mentioning

confidence: 99%

Composites, Fabrication and Application of Polyvinylidene Fluoride for Flexible Electromechanical Devices: A Review

Guo

Duan

Xie

et al. 2020

Preprint

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The technological development of piezoelectric materials is crucial for developing wearable and flexible electromechanical devices. There are many inorganic materials with piezoelectric effects, such as piezoelectric ceramics, aluminum nitride, and zinc oxide. They all have very high piezoelectric coefficients and large piezoelectric response ranges. The characteristics of high hardness and low tenacity make inorganic piezoelectric materials unsuitable for flexible devices that require frequent bending. Polyvinylidene fluoride (PVDF) and its derivatives are the most popular materials used in flexible electromechanical devices in recent years and have high flexibility, high sensitivity, high ductility, and a certain piezoelectric coefficient. Owing to increasing the piezoelectric coefficient of PVDF, researchers are committed to optimizing PVDF materials and enhancing their polarity by a series of means to further improve their mechanical–electrical conversion efficiency. This paper reviews the latest PVDF-related optimization materials, related processing and polarization methods, and the applications of these materials such as those in wearable functional devices, chemical sensors, biosensors, and flexible actuator devices for flexible micro-electromechanical devices. We also discuss the challenges of wearable devices based on flexible piezoelectric polymer, consider where further practical applications could be.

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Flexible piezoelectric nanogenerators using metal-doped ZnO-PVDF films

Cited by 111 publications

References 43 publications

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

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

Implantable Cardiac Kirigami‐Inspired Lead‐Based Energy Harvester Fabricated by Enhanced Piezoelectric Composite Film

Composites, Fabrication and Application of Polyvinylidene Fluoride for Flexible Electromechanical Devices: A Review

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