Theoretical study of contact-mode triboelectric nanogenerators as an effective power source

Niu, Simiao; Wang, Sihong; Lin, Long; Liu, Ying; Zhou, Yu; Hu, Youfan; Wang, Zhong Lin

doi:10.1039/c3ee42571a

Cited by 1,575 publications

(1,054 citation statements)

References 17 publications

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“…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]. In fact, the slope of increase in the case of device S4 (7.55 V/N) is over twice that of device S3 (3.38 V/N) and nearly 2.5 times that of device S2 (2.98 PVDF) TENGs reported in our previous work [16].…”

Section: Microstructure Of Zno Nanosheets and Zno-fluoropolymer Compomentioning

confidence: 99%

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: Microstructure Of Zno Nanosheets and Zno-fluoropolymer Compomentioning

confidence: 99%

Significant triboelectric enhancement using interfacial piezoelectric ZnO nanosheet layer

et al. 2017

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“…Simultaneously, mechanical compression between the two layers of polymers leads to a 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 1 1 1 1 1 1 12 1 1 1 12 12 2 2 2 2 2 2 2 2 2 2 reduction of the interplanar distance. According to the literature, we need to consider the relationship between the surface morphology and the triboelectric effect in order to enhance the triboelectric device performance because the surface triboelectric charges are the direct driving force for transport of induced electrons between electrodes in a triboelectric device [12][13][14]19]. Firstly, the change in the capacitance is largely improved during the mechanical deformation due to the presence of the air void (low dielectric constant, ∼1).…”

Section: Resultsmentioning

confidence: 99%

Influence of MWCNTs on β-Phase PVDF and Triboelectric Properties

Kim

Song

Heller

2017

Journal of Nanomaterials

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The surface of multiwalled carbon nanotubes (MWCNTs) was chemically modified using 1-pyrenebutyric acid (PBA) to improve its compatibility with polyvinylidene fluoride (PVDF). The carboxylic acid groups of the MWCNTs-PBA (PCNTs) provide aphase nucleation site to the fluorine of PVDF along their surface. The content of the -phase crystalline structure of PVDF was found to be the highest at a concentration of 1.0 wt.% of PCNTs, and these PVDF-PCNTs composites were utilized as active layers in triboelectric devices. The maximum output voltage achieved was 16 volts at a concentration of 1.0 wt.% of PCNTs in the PVDF composites.

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“…Keep in mind that the magnetic flux is nonlinear surrounding the pick-up coil. As for the TENG component, when contact occurs between the copper electrode piece and the PTFE film, the voltage from the single CB electrode triboelectric is given as [32] …”

Section: Resultsmentioning

confidence: 99%

Hybrid Electromagnetic and Triboelectric Nanogenerators with Multi-Impact for Wideband Frequency Energy Harvesting

Zhu

Wang

et al. 2017

Energies

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Abstract:We present a hybrid electromagnetic generator (EMG) and triboelectric nanogenerator (TENG) using a multi-impact approach for broad-bandwidth-frequency (10-45 Hz) energy harvesting. The TENG and the EMG were located at the middle and the free end of the cantilever beam, respectively. When the system was subjected to an external vibration, the cantilever beam would be in a nonlinear response with multiple impacts from a low frequency oscillator. The mathematical model included a TENG oscillator which can have multiple impacts on the cantilever, and the nonlinear Lorenz force which comes from the motion of the coil in the electromagnetic field. Due to the strong nonlinearity of the impacts from the TENG oscillator and the limited space for the free tip of the cantilever, the dynamic response of the cantilever presented a much broader bandwidth, with a frequency range from 10-45 Hz. We also found that the average generated power from TENG and EMG can reach up to 30 µW/m 2 and 53 µW, respectively. Moreover, the dynamic responses of the hybrid EMG and TENG were carefully analyzed, and we found that the measured experimental results and the numerical simulations results were in good agreement.

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Theoretical study of contact-mode triboelectric nanogenerators as an effective power source

Cited by 1,575 publications

References 17 publications

Significant triboelectric enhancement using interfacial piezoelectric ZnO nanosheet layer

Significant triboelectric enhancement using interfacial piezoelectric ZnO nanosheet layer

Influence of MWCNTs on β-Phase PVDF and Triboelectric Properties

Hybrid Electromagnetic and Triboelectric Nanogenerators with Multi-Impact for Wideband Frequency Energy Harvesting

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