Highly-flexible piezoelectric nanogenerators with silver nanowires and barium titanate embedded composite films for mechanical energy harvesting

Dudem, Bhaskar; Kim, Dong Hyun; Bharat, L. Krishna; Yu, Jae Su

doi:10.1016/j.apenergy.2018.09.009

Cited by 188 publications

(100 citation statements)

References 41 publications

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“…It is noteworthy that the product of the doping tunabilities and the structure tunabilities is equal to the value of the synergistic tunabilities, which gives clear evidence that the structure modulation and the doping modulation are two independent influencing factors for enhancing the output performance of the PENG. The comparison of electrical output performance of the as‐fabricated PENG with that reported in previous literatures is listed in Table 3 . It can be seen that the maximum instantaneous power density reported in the work by Zhang et al and this work is higher than that of others, indicating that freeze‐drying technique is an effective approach to raise electrical output performance of PENG.…”

Section: Resultsmentioning

confidence: 63%

Performance Enhancement of Flexible Piezoelectric Nanogenerator via Doping and Rational 3D Structure Design For Self‐Powered Mechanosensational System

Zhang

Zhu

et al. 2019

Adv Funct Materials

151

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With the rapid development of the Internet of things (IoT), flexible piezoelectric nanogenerators (PENG) have attracted extensive attention for harvesting environmental mechanical energy to power electronics and nanosystems. Herein, porous piezoelectric fillers with samarium/titanium-doped BiFeO 3 (BFO) are prepared by a freeze-drying method, and then silicone rubber is filled into the microvoids of the piezoelectric ceramics, forming a unique structure based on silicone rubber matrix with uniformly distributed piezoelectric ceramic. When subjected to external force stimulation, compared with conventional piezocomposite films found on undoped BFO without a porous structure, the PENG possesses higher stress transfer ability and thus boosts output performance. The notable enhancement in the stress transfer ability and piezoelectric potential is proven by COMSOL simulations. The PENG can exhibit a maximum open-circuit voltage (V oc ) of 16 V and shortcircuit current (I sc ) of 2.8 µA, which is 5.3 and 5.6 times higher than those of conventional piezocomposite films, respectively. The PENG can be used as a triggering signal to control the operation of fire extinguishers and household appliances. This work not only expands the application scope of lead-free piezoelectric ceramic for energy harvesting, but also provides a novel solution for self-powered mechanosensation and shows great potential application in IoT.

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Section: Resultsmentioning

confidence: 63%

Performance Enhancement of Flexible Piezoelectric Nanogenerator via Doping and Rational 3D Structure Design For Self‐Powered Mechanosensational System

Zhang

Zhu

et al. 2019

Adv Funct Materials

151

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“…Chen et al (2017) proposed a flexible piezoelectric nanogenerator based on a vertically aligned nanocomposite micropillar array of polyvinylidene fluoride-trifluoroethylene (P(VDF-TrFE))/barium titanate (BaTiO 3 ), which exhibits an enhanced voltage of 13.2 V and a current density of 0.33 µA/cm 2 [46]. Upon the application of a force of 3 N at a frequency of 5 Hz, a flexible PENG based on barium titanate embedded polyvinylidene difluoride (i.e., BaTiO 3 /PVDF) composite film exhibited a high output voltage of 14 V and short circuit current of 0.96 µA [47].…”

Section: Nanogenerators Based On Piezoelectric Effectmentioning

confidence: 99%

Nanogenerators as a Sustainable Power Source: State of Art, Applications, and Challenges

et al. 2019

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A sustainable power source to meet the needs of energy requirement is very much essential in modern society as the conventional sources are depleting. Bioenergy, hydropower, solar, and wind are some of the well-established renewable energy sources that help to attain the need for energy at mega to gigawatts power scale. Nanogenerators based on nano energy are the growing technology that facilitate self-powered systems, sensors, and flexible and portable electronics in the booming era of IoT (Internet of Things). The nanogenerators can harvest small-scale energy from the ambient nature and surroundings for efficient utilization. The nanogenerators were based on piezo, tribo, and pyroelectric effect, and the first of its kind was developed in the year 2006 by Wang et al. The invention of nanogenerators is a breakthrough in the field of ambient energy-harvesting techniques as they are lightweight, easily fabricated, sustainable, and care-free systems. In this paper, a comprehensive review on fundamentals, performance, recent developments, and application of nanogenerators in self-powered sensors, wind energy harvesting, blue energy harvesting, and its integration with solar photovoltaics are discussed. Finally, the outlook and challenges in the growth of this technology are also outlined.

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“…With the development of nanotechnology, metal nanomaterials have been widely investigated due to their unique physical and chemical properties, especially one-dimensional silver nanowires (AgNWs) [1][2][3]. AgNWs are extensively used in surface-enhanced Raman scattering [4][5][6][7], transparent conductive films (TCFs) [8][9][10][11][12], sensors [13][14][15][16][17], electronic circuits [18][19][20][21][22], and other electronic devices owing to their excellent electrical, thermal, optical, and mechanical properties. The performance and corresponding applications of AgNWs are closely related to their size and microstructure [23,24].…”

Section: Introductionmentioning

confidence: 99%

Ultra-Uniform and Very Thin Ag Nanowires Synthesized via the Synergy of Cl−, Br− and Fe3+ for Transparent Conductive Films

et al. 2020

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The properties and applications of Ag nanowires (AgNWs) are closely related to their morphology and composition. Therefore, controlling the growth process of AgNWs is of great significance for technological applications and fundamental research. Here, silver nanowires (AgNWs) were synthesized via a typical polyol method with the synergistic effect of Cl−, Br−, and Fe3+ mediated agents. The synergistic impact of these mediated agents was investigated intensively, revealing that trace Fe3+ ions provided selective etching and hindered the strong etching effect from Cl− and Br− ions. Controlling this synergy allowed the obtainment of highly uniform AgNWs with sub-30 nm diameter and an aspect ratio of over 3000. Transparent conductive films (TCFs) based on these AgNWs without any post-treatment showed a very low sheet resistance of 4.7 Ω sq−1, a low haze of 1.08% at a high optical transmittance of 95.2% (at 550 nm), and a high figure of merit (FOM) of 1210. TCFs exhibited a robust electrical performance with almost unchanged resistance after 2500 bending cycles. These excellent high-performance characteristics demonstrate the enormous potential of our AgNWs in the field of flexible and transparent materials.

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Highly-flexible piezoelectric nanogenerators with silver nanowires and barium titanate embedded composite films for mechanical energy harvesting

Cited by 188 publications

References 41 publications

Performance Enhancement of Flexible Piezoelectric Nanogenerator via Doping and Rational 3D Structure Design For Self‐Powered Mechanosensational System

Performance Enhancement of Flexible Piezoelectric Nanogenerator via Doping and Rational 3D Structure Design For Self‐Powered Mechanosensational System

Nanogenerators as a Sustainable Power Source: State of Art, Applications, and Challenges

Ultra-Uniform and Very Thin Ag Nanowires Synthesized via the Synergy of Cl−, Br− and Fe3+ for Transparent Conductive Films

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