Enhancement of piezoelectricity via electrostatic effects on a textile platform

Kim, Hyun‐Jin; Kim, Sang Woo; Son, Hyungbin; Kim, Hyeok; Park, Boongik; Ku, Ja Chun; Sohn, Jung Inn; Im, Kyuhyun; Jang, Jae Eun; Park, Jong-Jin; Kim, Ohyun; Cha, SeungNam; Park, Young Jun

doi:10.1039/c2ee22744d

Cited by 80 publications

(74 citation statements)

References 18 publications

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“…7 shows the generation mechanism plots of piezoelectric, triboelectric and combined effect in generating the V OC during press and release cycle. Both the pristine PVDF and ZnSnO 3 -PVDF membranes synthesised via phase-inversion method were found to have high -phase content of ~61% and 72%, respectively which is consistent with the results of our previous works [11,16]. The high -phase contributes to the increase in piezoelectric coefficient of the membranes [11], which contributes to the high piezoelectric constants observed for the samples.…”

Section: Mechanism For Performance Enhancement Of Tengssupporting

confidence: 80%

“…Both the pristine PVDF and ZnSnO 3 -PVDF membranes synthesised via phase-inversion method were found to have high -phase content of ~61% and 72%, respectively which is consistent with the results of our previous works [11,16]. The high -phase contributes to the increase in piezoelectric coefficient of the membranes [11], which contributes to the high piezoelectric constants observed for the samples. We have investigated the material properties of the PVDF, ZnSnO 3 -PVDF and ZnSnO 3 -PVDF/ZnO nanosheets using FTIR and DSC measurements with the results shown in the supplementary information (Fig.…”

Section: Mechanism For Performance Enhancement Of Tengssupporting

confidence: 80%

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Significant triboelectric enhancement using interfacial piezoelectric ZnO nanosheet layer

et al. 2017

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Significant triboelectric enhancement using interfacial piezoelectric ZnO nanosheet layer, Nano Energy, http://dx.doi.org/10. 1016/j.nanoen.2017.08.053 This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting galley proof before it is published in its final citable form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. Utilising an interfacial piezoelectric ZnO nanosheet layer, a significant enhancement in the power density is reported for the triboelectric nanogenerators (TENG) based on phase inversion membranes of polyvinylidene fluoride (PVDF) and polyamide-6 (PA6). At an applied force of 80 N, the TENG device incorporating electrochemically deposited ZnO nanosheets produces an output voltage of ~625 V and a current density of ~40 mAm -2 (corresponding a charge density of 100.6 Cm -2 ), respectively; significantly higher than ~310 V and ~10 mAm -2 (corresponding a charge density of 77.45 Cm -2 ) for the pristine TENG device. The enhancement in the surface charge density provided by the interfacial piezoelectric ZnO layer is also reflected in the high piezoelectric coefficient d 33 (-74 pmV -1 ) as compared to the pristine fluoropolymer membranes (-50 pmV -1 ). For tribo-negative membranes incorporating the interfacial ZnO layer, piezoelectric force microscopy measurements further show enhanced domain size which can be attributed to the interfacial dipole-dipole interaction with the ferroelectric polarization of PVDF, which promotes the alignment with the polar axis of ZnO. Under compressive stress, the piezoelectric potential thus produced in the ZnO nanosheets provides charge injection on to the surface of ZnSnO 3 -PVDF membrane, improving the charge density, which in-turn significantly enhances the power density from 0.11 to ~1.8 W/m 2 . The TENG devices thus fabricated using a facile electrochemical deposition and phase inversion technique show enhanced output power without the need for high electric field poling or external charge injection process by relying on coupling of triboelectric and piezoelectric effects.

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Section: Mechanism For Performance Enhancement Of Tengssupporting

confidence: 80%

Section: Mechanism For Performance Enhancement Of Tengssupporting

confidence: 80%

Significant triboelectric enhancement using interfacial piezoelectric ZnO nanosheet layer

et al. 2017

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“…In particular, piezoelectric nanogenerators (PNGs) based on semiconducting, inorganic, organic materials and hybrid structured materials have been widely investigated and developed in order to achieve high energy conversion efficiency [5][6][7][8][9][10][11][12][13]. Among the materials for PNG applications, ZnO has been the most widely used because of its asymmetric polar crystal structures, which give rise to superior piezoelectric properties and easy fabrication of variously shaped ZnO nanostructures on semiconducting, flexible organic, textile, and insulating substrates [5][6][7][8][9][10][11][12][13][14]. And the output voltage from the ZnO based PNGs were around 1~3 V depending on the device structures [5][6][7][8][9][10][11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

“…Among the materials for PNG applications, ZnO has been the most widely used because of its asymmetric polar crystal structures, which give rise to superior piezoelectric properties and easy fabrication of variously shaped ZnO nanostructures on semiconducting, flexible organic, textile, and insulating substrates [5][6][7][8][9][10][11][12][13][14]. And the output voltage from the ZnO based PNGs were around 1~3 V depending on the device structures [5][6][7][8][9][10][11][12][13][14]. For more practical applications, it would be advantageous if a self-powering system could be integrated into facilities such as buildings, vehicles, or hand-carried electronic devices.…”

Section: Introductionmentioning

confidence: 99%

Performance-enhanced ZnO nanorod-based piezoelectric nanogenerators on double-sided stainless steel foil

Jung

Baek

Hasan

et al. 2015

Journal of Alloys and Compounds

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“…Piezoelectric and electrostatic mechanisms are suitable for small size harvesters in view of their compatibility with standard microelectromechnical systems (MEMS) manufacturing procedure, while electromagnetic mechanisms are more suitable for large size harvesters. In recent studies, the hybrid energy harvesting technology is being increasingly investigated (Khaligh et al, 2008;Wacharasindhu and Kwon, 2008;Challa et al, 2009;Tadesse et al, 2009;Yang et al, 2010;Kim et al, 2012;Shan et al, 2013). Usually, for hybrid energy harvesting, the PEH and EMEH should be on the same scale (for comparable power output), otherwise the hybrid scheme will be meaningless.…”

Section: Introductionmentioning

confidence: 99%

A 2DOF hybrid energy harvester based on combined piezoelectric and electromagnetic conversion mechanisms

Wang

Tang

Guo

et al. 2014

J. Zhejiang Univ. Sci. A

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Abstract:This paper presents a two-degree-of-freedom (2DOF) hybrid piezoelectric-electromagnetic energy harvester (P-EMEH). Such a 2DOF system is designed to achieve two close resonant frequencies. The combined piezoelectricelectromagnetic conversion mechanism is exploited to further improve the total power output of the system in comparison to a stand-alone piezoelectric or electromagnetic conversion mechanism. First, a mathematical model for the 2DOF hybrid P-EMEH is established. Subsequently, the maximal power output of the 2DOF hybrid P-EMEH is compared both experimentally and theoretically with those from the 1DOF piezoelectric energy harvester (PEH), 1DOF electromagnetic energy harvester (EMEH), 2DOF PEH, and 2DOF EMEH. Based on the validated mathematical model, the effect of the effective electromechanical coupling coefficients (EMCC) on the maximal power outputs from various harvester configurations is analyzed. The results indicate that for the 2DOF hybrid P-EMEH, although the increase of the power output from one electromechanical transducer will lead to the decrease of the power output from the other, the overall performance of the system is improved in weak and medium coupling regimes by increasing electromechanical coupling. In weak and medium coupling scenarios, the hybrid energy harvester configuration is advantageous over conventional 1DOF or 2DOF harvester configurations with a stand-alone conversion mechanism.

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Enhancement of piezoelectricity via electrostatic effects on a textile platform

Cited by 80 publications

References 18 publications

Significant triboelectric enhancement using interfacial piezoelectric ZnO nanosheet layer

Significant triboelectric enhancement using interfacial piezoelectric ZnO nanosheet layer

Performance-enhanced ZnO nanorod-based piezoelectric nanogenerators on double-sided stainless steel foil

A 2DOF hybrid energy harvester based on combined piezoelectric and electromagnetic conversion mechanisms

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