Flexible three-dimensional interconnected piezoelectric ceramic foam based composites for highly efficient concurrent mechanical and thermal energy harvesting

Zhang, Guangzu; Zhao, Peng; Zhang, Xiaoshan; Han, Kuo; Zhao, Tiankai; Zhang, Yong; Jeong, Chang Kyu; Jiang, Shenglin; Zhang, Sulin; Wang, Qing

doi:10.1039/c8ee00595h

Cited by 202 publications

(121 citation statements)

References 51 publications

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“…BaTiO3 (BT), Pb (Zr, Ti) O3 (PZT), (K, Na) NbO3 (KNN) are brittle due to their high piezoelectric coefficients, thus flexible and high performance PENGs have been developed by combining them with flexible polymers. [30][31][32][33][34][35] Regarding piezoelectric materials, PZT based piezoelectric materials are not an environmentally friendly option as they contain a significant amount of lead (65%) in their structure and potentially cause environmental pollution. For this reason, the integration of device-type materials in the form of bio-based piezoelectric generator into wearable textiles that convert waste mechanical energy released by the human body into electricity without using too much synthetic chemicals is a necessity of the technology age we are in.…”

Section: Introductionmentioning

confidence: 99%

Aerogel based nanogenerators: Production methods, characterizations and applications

Korkmaz

Kariper

2020

Int J Energy Res

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Thanks to the nanogenerators known as state-of-the-art energy collecting devices, the mechanical energy in every environment can be converted into electrical energy. Some studies on the improvement of the performance of triboelectric and piezoelectric nanogenerators that convert mechanical energy to electrical energy revealed that aerogels brought significant outcomes in the development of nanogenerators. Aerogels, the lightest solid material known, provides a large surface area as the contact area of the nanogenerators, its adjustable porosity allows to improve electronic properties of the nanogenerators, showing its significance in electronics once again. At the same time, the use of aerogels, which is the best candidate in terms of flexibility and mechanical strength required in wearable electronics, in the production of nanogenerators continues to attract the attention of researchers. This study includes an introduction of aerogels and the discussions on the studies involving aerogel based nanogenerators. In the paper, the studies in the literature, focusing on the advantages of aerogel based nanogenerators and their current applications were collected. Three different types of aerogel nanogenerators production were observed to be produced. They are all based on aerogel electrodes produced from different materials, and the paper outlines them with basic working principles. This classification of aerogel nanogenerators and outlining the results will make a significant contribution to the literature and will be a good source for researchers who want to work in this field.

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Section: Introductionmentioning

confidence: 99%

Aerogel based nanogenerators: Production methods, characterizations and applications

Korkmaz

Kariper

2020

Int J Energy Res

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“…[2][3][4] Piezoelectric materials fulfill these requirements because, in addition to their utilization as renewable energy sources, they can be deposited on flexible substrates and show costeffective scalability, which are key elements for innovative devices in the field of green technologies. 5 Among the large variety of solutions aimed at fabricating new flexible piezoelectric materials, composites consisting of piezoelectric ceramic fillers embedded in a polymeric matrix have been proposed. In this context, UV-curable systems have been considered as a particularly suitable matrix to implement new smart composites, thanks to their rapid cure and wide range of properties.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and characterization of UV‐curable nanocellulose/ZnO/AlN acrylic flexible films: Thermal, dynamic mechanical and piezoelectric response

Signore

Pascali

Duraccio

et al. 2020

J of Applied Polymer Sci

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This work is aimed at fabricating nanocomposites based on zinc oxide (ZnO) nanostructures and nanocellulose dispersed in a UV-cured acrylic matrix (EC) for application as functional coatings for self-powered applications. Morphological, thermal, and dynamic mechanical properties of the nanocomposites were characterized by X-Ray diffractometry (XRD), scanning electron microscopy, and differential scanning calorimetry. The piezoelectric behavior was evaluated in terms of root mean square (RMS) open circuit voltage, at different accelerations applied to cantilever beams. The generated voltage was correlated with ZnO nanostructures morphology, aluminum nitride film integration on the beam and proof mass insertion at the tip. Nitride layer increased the RMS voltage from 1 to 2.4 mV up to 3.9 mV (using ZnO nanoflowers). As confirmed by XRD analyses, the incorporation of ZnO nanostructures into the acrylic matrix favored an ordered structural arrangement of the deposited AlN layer, hence improving the piezoelectric response of the resulting nanocomposites. With proof mass insertion, the output voltage was further increased, reaching 4.5 mV for the AlN-coated system containing ZnO nanoflowers.

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“…18 In addition, the permittivity mismatch between the two phases result in an unfavorable electric field distribution that restricts poling of the composite and further reduce the piezoelectric properties. A higher connectivity of the ferroelectric ceramic can be achieved with either conventional mechanical dice and fill 10 , the use of sacrificial templates 19 , and a dielectrophoresis technique that uses an AC electric field to align the ceramic filler. 20 However, processes such as dice and fill can damage the ceramic due to the brittle nature of the materials and it is difficult to create complex shapes and device structures.…”

Section: Introductionmentioning

confidence: 99%

“…The d15 mode is therefore of interest for sensing as the d15 shear mode has the potential to be effective when used in sensing and energy harvesting applications. 19,27 Self-powered piezoelectric sensors are widely used to sense longitudinal 20 (d33-mode) and transverse strains 12 (d31-mode); for example recently a flexible three dimensional piezoelectric polymer composite made with a polyurethane foam template was recently reported for a pressure and bending sensor 19 . However, there is less work on shear (d15-mode) based force sensors.…”

Section: Introductionmentioning

confidence: 99%

Flexible and Active Self-Powered Pressure, Shear Sensors Based on Ice- templated Ceramic-Polymer Composites

Bowen¹

2019

Preprint

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We demonstrate self-powered flexible and highly active pressure and shear sensors based on ice-templated ceramic-polymer structures. A lamellar lead zirconate titanate (PZT) structure is initially developed via freeze-casting and the piezoelectric composites are formed by impregnating a polydimethylsiloxane (PDMS) matrix into the aligned pore channels. The structured PZT-PDMS composites exhibited a high effective longitudinal piezoelectric coefficient (d*33) of 750 pC/N, which is higher than that of the monolithic ceramic due to the combination of bending and flexural effects. The use of freeze casting enables the manufacture of complex and arbitrary shaped 3D piezoelectric architectures, along with the unique advantages of low-cost and ease of fabrication. A 14×14 mm2 PZT-PDMS pressure sensor was able to bend to a small radius of 8 mm and maintain a high d33. Furthermore, the manufactured self-powered sensors are demonstrated in a range of applications, such as, acceleration, strain and touch sensors that use the d33, d31 and d15 coefficients to detect longitudinal, transverse and shear loads. This work expands on the potential applications of freeze casting and provides new opportunities for the manufacture of future electronic sensors.

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Flexible three-dimensional interconnected piezoelectric ceramic foam based composites for highly efficient concurrent mechanical and thermal energy harvesting

Abstract: Exceptionally high piezoelectric and pyroelectric performances have been demonstrated in the three-dimensional interconnected microfoam based polymer nanocomposites.

Cited by 202 publications

References 51 publications

Aerogel based nanogenerators: Production methods, characterizations and applications

Aerogel based nanogenerators: Production methods, characterizations and applications

Synthesis and characterization of UV‐curable nanocellulose/ZnO/AlN acrylic flexible films: Thermal, dynamic mechanical and piezoelectric response

Flexible and Active Self-Powered Pressure, Shear Sensors Based on Ice- templated Ceramic-Polymer Composites

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