Surface texturing and dielectric property tuning toward boosting of triboelectric nanogenerator performance

Fang, Zhenggang; Chan, Kwok Hoe; Lü, Xin; Tan, Chuan Fu; Ho, Ghim Wei

doi:10.1039/c7ta07696g

Cited by 136 publications

(70 citation statements)

References 38 publications

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“…COMSOL Multiphysics simulation was performed to further confirm the surface potential difference introduced by the synergistic effects of BaTiO 3 /MWCNTs under two BT sizes. According to the transferred charge density ( σ′ ) equation

σ' = \frac{σ d_{gap}}{d_{gap} + \frac{d_{film}}{ε_{r}}}

where σ , d gap , d film , and ε r are triboelectric charge density at the equilibrium state, gap distance, film thickness, and dielectric constant of the composite film, respectively. For a certain TENG device, σ′ is determined by both gap distance and dielectric constant of the films.…”

Section: Resultsmentioning

confidence: 99%

Synergistic Effects of BaTiO₃/Multiwall Carbon Nanotube as Fillers on the Electrical Performance of Triboelectric Nanogenerator Based on Polydimethylsiloxane Composite Films

Feng

Zhang

et al. 2019

Energy Tech

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Herein, polydimethylsiloxane (PDMS) composite films containing BaTiO3 particles with an average size of 70 and 500 nm are prepared and characterized, respectively. Then, triboelectric nanogenerators (TENG) based on the composite films are designed at different BaTiO3 sizes and mass ratios. In addition, multiwall carbon nanotubes (MWCNTs) are also used for uniform dispersion of BaTiO3 particles in composite films for the TENG device. With the synergistic effects of BaTiO3/MWCNT fillers, discrete conductive micronetworks surrounded by BaTiO3 particles form, and then, the effective filler–matrix interface effect in the three‐phase composite is enhanced, leading to superior triboelectric output performance, supported by much higher dielectric permittivity and COMSOL simulation. Moreover, the triboelectric output performance of TENG changes with different‐sized BaTiO3 particles. As to BT‐70‐MWCNT/PDMS composites, with the same mass ratio of BT, the peak output current is always higher than that of BT‐500‐MWCNT/PDMS. Furthermore, the optimum BT mass ratio of BT‐70‐MWCNT/PDMS composites is also higher than that of BT‐500. With BaTiO3 of size 70 nm, the maximum surface charge density is about 160 μC m−2 under an optimized mass ratio, whereas it is about 110 μC m−2 for BaTiO3 of size 500 nm.

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σ' = \frac{σ d_{gap}}{d_{gap} + \frac{d_{film}}{ε_{r}}}

Section: Resultsmentioning

confidence: 99%

Synergistic Effects of BaTiO₃/Multiwall Carbon Nanotube as Fillers on the Electrical Performance of Triboelectric Nanogenerator Based on Polydimethylsiloxane Composite Films

Feng

Zhang

et al. 2019

Energy Tech

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“…On the other hand, the output performance of TENG devices is also enhanced by modifying the relative permittivity of the dielectric/triboelectric materials . For example, the embedded materials into polymer matrices such as silver nanowires, carbon nanotubes, some dielectric materials, etc. are expected to boost surface electrification and relative permittivity of dielectric (i.e., frictional) materials, which leads to the enhanced output performance of TENGs.…”

Section: Introductionmentioning

confidence: 99%

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

Mule

Dudem

Graham

et al. 2019

Adv Funct Materials

116

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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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“…As the TENGs are capacitive type nanogenerators, increasing the relative permittivity of the triboelectric materials in contact can increase the capacitance of the device, and then more charges are induced and stored, thus improving the performance of the TENGs. There are some studies which can enhance output performance of TENGs by incorporating high dielectric nanoparticles into polydimethyl siloxane (PDMS) films . For example, Chen et al designed an approach by filling the tribomaterial PDMS with high permittivity SrTiO 3 nanoparticles, and the voltage and current density have reached up to 305 V and 7.18 µA cm −2 .…”

Section: Introductionmentioning

confidence: 99%

Significantly Enhanced Performance of Triboelectric Nanogenerator by Incorporating BaTiO₃ Nanoparticles in Poly(vinylidene fluoride) Film

Zhang

Jin

et al. 2019

Physica Status Solidi (a)

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Triboelectric nanogenerators (TENGs) have received significant attention in recent years due to their renewable and sustainable properties. They convert mechanical energy into electric energy through contact and separation of two dissimilar materials. Many methods have been developed to improve the performance of TENGs, but little attention has been paid to use nanoparticles such as BaTiO 3 (BTO) with high dielectric constant for enhancing the performance. This paper reports the achievement of significant performance enhancement of poly(vinylidene fluoride) (PVDF)/polyamide-6 (PA6) TENGs by incorporating BTO nanoparticles into the PVDF film. The PVDF-BTO/PA6 TENG with 10 wt% BTO nanoparticles shows the best results with a peak voltage and charge density up to 900 V and 34.4 μC m À2 at contact frequency of 5 Hz when the contact force and the spacer distance are 180 N and 100 mm, which are much higher than 384 V and 26.4 μC m À2 of the PVDF/PA6 TENG without incorporating BTO nanoparticles. Further increase in the BTO concentration deteriorates the output performance of the TENGs. Detailed investigations on the piezo-response and permittivity of the PVDF-BTO films show that the increased piezoelectric constant and permittivity are responsible for the significantly enhanced performance of the TENGs. A mathematical model has been developed to describe the output voltages of the TENG as a function of thickness of the PVDF-BTO film.

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Surface texturing and dielectric property tuning toward boosting of triboelectric nanogenerator performance

Abstract: Triboelectric nanogenerators with enhanced output performance by surface texturing and dielectric constant control.

Cited by 136 publications

References 38 publications

Synergistic Effects of BaTiO₃/Multiwall Carbon Nanotube as Fillers on the Electrical Performance of Triboelectric Nanogenerator Based on Polydimethylsiloxane Composite Films

Synergistic Effects of BaTiO₃/Multiwall Carbon Nanotube as Fillers on the Electrical Performance of Triboelectric Nanogenerator Based on Polydimethylsiloxane Composite Films

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

Significantly Enhanced Performance of Triboelectric Nanogenerator by Incorporating BaTiO₃ Nanoparticles in Poly(vinylidene fluoride) Film

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Surface texturing and dielectric property tuning toward boosting of triboelectric nanogenerator performance

Abstract: Triboelectric nanogenerators with enhanced output performance by surface texturing and dielectric constant control.

Cited by 136 publications

References 38 publications

Synergistic Effects of BaTiO3/Multiwall Carbon Nanotube as Fillers on the Electrical Performance of Triboelectric Nanogenerator Based on Polydimethylsiloxane Composite Films

Synergistic Effects of BaTiO3/Multiwall Carbon Nanotube as Fillers on the Electrical Performance of Triboelectric Nanogenerator Based on Polydimethylsiloxane Composite Films

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

Significantly Enhanced Performance of Triboelectric Nanogenerator by Incorporating BaTiO3 Nanoparticles in Poly(vinylidene fluoride) Film

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Synergistic Effects of BaTiO₃/Multiwall Carbon Nanotube as Fillers on the Electrical Performance of Triboelectric Nanogenerator Based on Polydimethylsiloxane Composite Films

Synergistic Effects of BaTiO₃/Multiwall Carbon Nanotube as Fillers on the Electrical Performance of Triboelectric Nanogenerator Based on Polydimethylsiloxane Composite Films

Significantly Enhanced Performance of Triboelectric Nanogenerator by Incorporating BaTiO₃ Nanoparticles in Poly(vinylidene fluoride) Film