1.6 V Nanogenerator for Mechanical Energy Harvesting Using PZT Nanofibers

Chen, Xi; Xu, Shiyou; Yao, Nan; Shi, Yong

doi:10.1021/nl100812k

Cited by 830 publications

(582 citation statements)

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“…1c) show that the as-synthesized nanowires have a tetragonal phase of single crystalline PZT (space group P4mm) and a [001] growth direction 18 . The vertical growth and alignment were enforced by the epitaxial growth on the inorganic substrate, which have a better alignment than the nanofibres fabricated by electrospinning 15 . A piezoelectric domain boundary was found in the axial direction of the nanowire, but the entire nanowire preserves a single crystal structure ( Supplementary Fig.…”

Section: Resultsmentioning

confidence: 99%

“…First, facial growth of high crystallinity PZT nanowires by wet chemical methods exhibits a great advantage for scaling up at a low cost and the possibility of being transferred onto flexible substrates 17 , whereas single-crystal PZT thin films are fabricated at high temperature using chemical vapor deposition 22 . Second, in comparison with the polycrystalline PZT nanofibres 15 , the single crystalline PZT nanowires have extremely high elasticity and are resistant to fatigue, allowing large degrees of mechanical deformation without fracture 23 . This results in largely enhanced energy conversion efficiencies owing to non-linear mechanical properties.…”

Section: Discussionmentioning

confidence: 99%

“…This results in largely enhanced energy conversion efficiencies owing to non-linear mechanical properties. Third, in comparison with polycrystalline PZT bulk and nanostructures 12,13,15 , the single crystalline PZT nanowires are expected to have higher piezoelectric constants because of the absence of domain boundaries that would pin up the dipole moments. Forth, the force/stress required to induce the mechanical deformation of the nanowires is rather small in comparison with that needed to deform a solid thin-film-based energy harvester, thus permitting nanowirebased nanogenerators to operate in scenarios where only small triggering forces are available, such as in biological system, tiny vibration and even small pressure fluctuation 24 .…”

Section: Discussionmentioning

confidence: 99%

“…However, the fabrication of PZT thin films 14 and microfibres 15 usually requires high temperatures (~650 °C) to increase the crystallinity 16 , which leads not only to high cost and incompatibility with general fabrication processes but also makes it difficult to integrate with soft materials, even though a transfer technique has been demonstrated recently 17 . Here, we report the first chemical epitaxial growth of vertically aligned single-crystal PbZr 0.52 Ti 0.48 O 3 nanowire arrays on a variety of conductive and non-conductive substrates by hydrothermal decomposition at 230 °C.…”

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confidence: 99%

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Piezoelectric-nanowire-enabled power source for driving wireless microelectronics

2010

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Harvesting energy from irregular/random mechanical actions in variable and uncontrollable environments is an effective approach for powering wireless mobile electronics to meet a wide range of applications in our daily life. Piezoelectric nanowires are robust and can be stimulated by tiny physical motions/disturbances over a range of frequencies. Here, we demonstrate the first chemical epitaxial growth of PbZr x Ti 1 − x o 3 (PZT) nanowire arrays at 230 °C and their application as high-output energy converters. The nanogenerators fabricated using a single array of PZT nanowires produce a peak output voltage of ~0.7 V, current density of 4 µA cm − 2 and an average power density of 2.8 mW cm − 3 . The alternating current output of the nanogenerator is rectified, and the harvested energy is stored and later used to light up a commercial laser diode. This work demonstrates the feasibility of using nanogenerators for powering mobile and even personal microelectronics.

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Section: Resultsmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

mentioning

confidence: 99%

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Piezoelectric-nanowire-enabled power source for driving wireless microelectronics

2010

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“…In particular, heat energy exists in all places and can be transferred to electric energy using thermoelectric generators [4][5][6]. The produced electric energy is used by low-consumption electronics for ambient assisted living (AAL) applications such as biosensors [7,8]. However, employing thermoelectric generators for AAL applications requires that miniaturized generators be produced at a low manufacturing cost while still maintaining thermoelectric performance as high as that achieved with large-scale generators.…”

Section: Introductionmentioning

confidence: 99%

Combination of Electrodeposition and Transfer Processes for Flexible Thin-Film Thermoelectric Generators

et al. 2018

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Abstract:To reduce consumption for ambient assisted living (AAL) applications, we propose the design and fabrication of flexible thin-film thermoelectric generators at a low manufacturing cost. The generators were fabricated using a combination of electrodeposition and transfer processes. N-type Bi 2 Te 3 films and p-type Sb 2 Te 3 films were formed on a stainless-steel substrate employing potentiostatic electrodeposition using a nitric acid-based bath, followed by a transfer process. Three types of flexible thin-film thermoelectric generators were fabricated. The open circuit voltage (V oc ) and maximum output power (P max ) were measured by applying a temperature difference between the ends of the generator. The thin-film generators obtained using thermoplastic sheets with epoxy resin exhibited a V oc that was tens of millivolts. In particular, the contact resistance of the thin-film generator decreased when silver paste was inserted at the junctions between the n-and p-type films. The most flexible thin-film generator fabricated in this study exhibited a P max of 10.4 nW at a temperature difference of 60 K. The current performance of the generators was too low, but we innovated a combination process to prepare them. It is expected to increase the performance by further decreasing the micro-cracks and contact resistance in the generators.

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Polymer Nanofibers

Mandal

Song

Zeng

et al. 2023

Encyclopedia of Polymer Science and Technology

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The aim of this article is to provide an overview of nanofibers' properties, functionality enhancement, and applications. In order to achieve this, the significant properties of nanofibers were first demonstrated. Based on this demonstration, it was concluded that nanofibers have potential use for a wide range of applications. Additionally, the functionality enhancements of nanofibers through their physical and chemical modifications were reviewed. This functionality enhancement process helps to effectively apply the nanofibers in the engineering and medical fields. The applications of nanofibers in different hi‐tech engineering and medical fields were described. This article identified various gaps and limitations associated with nanofibers' applications and suggested further research directions. Based on this article, it has been found that nanofibers could be produced with several properties and structures including shape, size, and strength. As a result, nanofibers could be applicable in high‐tech engineering and medical sectors such as tissue engineering, sensors, and enzyme carrier. As nanofiber is a porous media, the applicability of nanofibers could be widened in different fields like protective apparel, lightweight military products, and so on. This article can help polymer engineers to improve and extend the applicability of nanofibers in evolving engineering and medical fields. In turn, this article could help to advance the field of high‐tech engineering and medical field for better human life.

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1.6 V Nanogenerator for Mechanical Energy Harvesting Using PZT Nanofibers

Cited by 830 publications

References 19 publications

Piezoelectric-nanowire-enabled power source for driving wireless microelectronics

Piezoelectric-nanowire-enabled power source for driving wireless microelectronics

Combination of Electrodeposition and Transfer Processes for Flexible Thin-Film Thermoelectric Generators

Polymer Nanofibers

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