High performance triboelectric nanogenerators based on phase-inversion piezoelectric membranes of poly(vinylidene fluoride)-zinc stannate (PVDF-ZnSnO3) and polyamide-6 (PA6)

Soin, Navneet; Zhao, Pengfei; Prashanthi, K.; Chen, Jinkai; Ding, Peng; Zhou, Erping; Shah, Tahir; Ray, Sekhar C.; Tsonos, Christos; Thundat, Thomas; Σιώρης, Ηλίας; Luo, Jikui

doi:10.1016/j.nanoen.2016.10.040

Cited by 139 publications

(110 citation statements)

References 49 publications

(87 reference statements)

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“…The material not only demonstrates strong negative triboelectric properties, but also displays polarisation effect which increases the triboelectric charge density on the surface as demonstrated by a number of previous works [6,15], including ours [16]. The polar -phase PVDF forms a planar zigzag (TTT) structure which creates an organised crystal, allowing a higher packing density with the alignment of the charged fluorine atoms producing a net polarisation [16].…”

Section: Introductionmentioning

confidence: 84%

“…In fact, in a recent work carried out by Wang et al, nanostructured porous PVDF and PA6 membrane based TENG produced a significantly higher charge density (71 Cm -2 ) than their smooth counterpart (48 Cm -2 ) [8]. The observed high porosity of phase-inversion membranes is highly beneficial in enhancing the performance of the TENGs owing to the increased effective surface area [1,16] and will be discussed further in the following sections. For the pristine PVDF/ZnO/Al system, the contact force still has a significant effect on the output performance of TENGs which is believed to arise from the elastic nature of the contacting materials, with a larger contact force substantially modifying the effective contact/charging area [21,27,28].…”

Section: Microstructure Of Zno Nanosheets and Zno-fluoropolymer Compomentioning

confidence: 91%

“…The polar -phase PVDF forms a planar zigzag (TTT) structure which creates an organised crystal, allowing a higher packing density with the alignment of the charged fluorine atoms producing a net polarisation [16]. Thus, the use of PVDF with high crystallinity and -phase content could further improve the performance of the TENGs as demonstrated by our previous work [16].…”

Section: Introductionmentioning

confidence: 91%

“…The deposition of PVDF, ZnSnO 3 -PVDF and PA6 films was carried out in accordance with our previous studies [16,22]. Briefly, the solutions for the synthesis of the membranes were prepared using a 20 wt% dope solution in the corresponding solvents (Formic acid for …”

Section: Membrane Preparation By Phase-inversion Processmentioning

confidence: 99%

“…For both the PVDF/ZnO/Al and ZnSnO 3 -PVDF/ZnO/Al samples, the surfaces exhibit high porosity, which is inherent to the phase inversion process. During the phase inversion process, the N, N-DMF solvent present in the dope solution escapes due to solvent anti-solvent interactions, leaving behind a high density of pores in the resulting membranes [16,22]. Previous literature suggests that the charge density of the TENG can be enhanced by effectively controlling the microstructure and porosity of the polymer films [4,9,18,26].…”

Section: Microstructure Of Zno Nanosheets and Zno-fluoropolymer Compomentioning

confidence: 99%

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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: Introductionmentioning

confidence: 84%

Section: Microstructure Of Zno Nanosheets and Zno-fluoropolymer Compomentioning

confidence: 91%

Section: Introductionmentioning

confidence: 91%

Section: Membrane Preparation By Phase-inversion Processmentioning

confidence: 99%

Section: Microstructure Of Zno Nanosheets and Zno-fluoropolymer Compomentioning

confidence: 99%

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Significant triboelectric enhancement using interfacial piezoelectric ZnO nanosheet layer

et al. 2017

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Humidity Sustained Wearable Pouch‐Type Triboelectric Nanogenerator for Harvesting Mechanical Energy from Human Activities

Mule

Dudem

Graham

et al. 2019

Adv Funct Materials

101

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Triboelectric nanogenerators (TENGs) are gaining much research interest recently owing to their facile and cost-effective device structure. However, the effect of relative humidity (in moisture atmosphere) on the output performance still needs to be resolved. Herein, a pouch-type TENG is proposed to significantly reduce the effect of relative humidity on its electrical output and a stable performance is also attained in a humid environment. In this regard, a dielectric and dielectric materials-based TENG (DD-TENG) is first developed using nanoarchitecture polydimethylsiloxane (NA-PDMS) and multiwalled carbon nanotube/nylon composite layers as a triboelectric material with the negative and positive tendencies, respectively. The NA-PDMS and nylon composite layers play a key role in increasing the surface contact area and surface charge density between the dielectric/triboelectric materials as well as the output performance of DD-TENG. However, the DD-TENG device exhibits a stable and high output performance with the effective output power density of ≈25.35 W m −2 . Additionally, the performance of the pouch-type DD-TENG device is not almost affected even though the relative humidity is increased from 35 to 81%, while it is dramatically decreased for the nonpouchtype device. Finally, the pouch-type DD-TENG is employed as a wearable device to effectively harvest the mechanical energy from daily human activities.

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Deep‐Learning‐Assisted Neck Motion Monitoring System Self‐Powered Through Biodegradable Triboelectric Sensors

Sun,

Zhu,

Jia

et al. 2023

Adv Funct Materials

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In the new era of artificial intelligence (AI) and the Internet of Things (IoT), big data collection and analysis for intelligent sports are of great importance in monitoring human health. Herein, naturally, biodegradable triboelectric nanogenerators (NB‐TENGs) are developed based on low‐cost, recyclable, and environmentally friendly corn bracts, which are further applied in neck motion recognition. Three NB‐TENGs are integrated into an elastic collar to create a neck‐condition monitoring triboelectric sensor (NCM‐TS). An intelligent behavioral monitoring system is achieved by combining NCM‐TS with a deep learning model, which allows the recognition of four types of neck motion with an average accuracy of 94%. The developed neck motion monitoring sensor has broad potential applications in sports health monitoring, rehabilitation training, and healthcare.

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High performance triboelectric nanogenerators based on phase-inversion piezoelectric membranes of poly(vinylidene fluoride)-zinc stannate (PVDF-ZnSnO3) and polyamide-6 (PA6)

Cited by 139 publications

References 49 publications

Significant triboelectric enhancement using interfacial piezoelectric ZnO nanosheet layer

Significant triboelectric enhancement using interfacial piezoelectric ZnO nanosheet layer

Humidity Sustained Wearable Pouch‐Type Triboelectric Nanogenerator for Harvesting Mechanical Energy from Human Activities

Deep‐Learning‐Assisted Neck Motion Monitoring System Self‐Powered Through Biodegradable Triboelectric Sensors

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