Scanning triboelectric nanogenerator as a nanoscale probe for measuring local surface charge density on a dielectric film

2021 ◽  
Vol 118 (19) ◽  
pp. 193901
Author(s):  
Shiquan Lin ◽  
Zhong Lin Wang
Keyword(s):  
Charge Density ◽  
Surface Charge ◽  
Surface Charge Density ◽  
Dielectric Film ◽  
Triboelectric Nanogenerator ◽  
Local Surface

A multi-dielectric-layered triboelectric nanogenerator as energized by corona discharge

Nanoscale ◽  
2017 ◽  
Vol 9 (27) ◽  
pp. 9668-9675 ◽  
Author(s):  
Jia Jia Shao ◽  
Wei Tang ◽  
Tao Jiang ◽  
Xiang Yu Chen ◽  
Liang Xu ◽  
...  
Keyword(s):  
Charge Density ◽  
Surface Charge ◽  
Corona Discharge ◽  
Surface Charge Density ◽  
High Surface ◽  
Cycling Stability ◽  
Triboelectric Nanogenerator ◽  
Excellent Cycling Stability ◽  
Vertical Contact ◽  
High Surface Charge Density

A multi-dielectric-layered vertical contact-separation mode TENG through a corona discharge approach results in outstanding output performances, i.e., a high surface charge density of 283 μC m−2 and excellent cycling stability (92.6% retention after 200 000 cycles).

scholarly journals Rationally patterned electrode of direct-current triboelectric nanogenerators for ultrahigh effective surface charge density

2020 ◽  
Vol 11 (1) ◽  
Author(s):  
Zhihao Zhao ◽  
Yejing Dai ◽  
Di Liu ◽  
Linglin Zhou ◽  
Shaoxin Li ◽  
...  
Keyword(s):  
Energy Harvesting ◽  
Charge Density ◽  
Surface Charge ◽  
Direct Current ◽  
Surface Charge Density ◽  
Large Scale ◽  
Triboelectric Nanogenerator ◽  
Electrode Structure ◽  
Effective Surface ◽  
Self Powered

AbstractAs a new-era of energy harvesting technology, the enhancement of triboelectric charge density of triboelectric nanogenerator (TENG) is always crucial for its large-scale application on Internet of Things (IoTs) and artificial intelligence (AI). Here, a microstructure-designed direct-current TENG (MDC-TENG) with rationally patterned electrode structure is presented to enhance its effective surface charge density by increasing the efficiency of contact electrification. Thus, the MDC-TENG achieves a record high charge density of ~5.4 mC m−2, which is over 2-fold the state-of-art of AC-TENGs and over 10-fold compared to previous DC-TENGs. The MDC-TENG realizes both the miniaturized device and high output performance. Meanwhile, its effective charge density can be further improved as the device size increases. Our work not only provides a miniaturization strategy of TENG for the application in IoTs and AI as energy supply or self-powered sensor, but also presents a paradigm shift for large-scale energy harvesting by TENGs.

scholarly journals High Performance Temperature Difference Triboelectric Nanogenerator

2020 ◽  
Author(s):  
Bolang Cheng ◽  
Qi Xu ◽  
Yaqin Ding ◽  
Suo Bai ◽  
Xiaofeng Jia ◽  
...  
Keyword(s):  
High Temperature ◽  
Charge Density ◽  
Surface Charge ◽  
Temperature Difference ◽  
Surface Charge Density ◽  
Thermionic Emission ◽  
Triboelectric Nanogenerator ◽  
Emission Model ◽  
Continuous Increase ◽  
Output Performance

Abstract Usually, high temperature decreases the output performance of triboelectric nanogenerator (TENG) because of the dissipation of triboelectric charges through the thermionic emission. It would be highly valuable if the high temperature can be used to enhance the output performance of TENG. In this paper, through a simulation combining the electron-cloud-potential-well model for triboelectrification and the thermionic-emission model, we find that there exists an optimum temperature difference ∆T between friction layers under which the output of TENG is maximum. Based on this, a type of contact-separation temperature difference TENG with controllable friction layer temperature (TDNG) is designed and fabricated to enhance the electrical output performance in temperature difference environment. As the temperature difference ∆T increasing from 0 K to 145 K, the output voltage, current, the surface charge density and output power are increased 2.7, 2.2, 3.0 and 2.9 times, respectively (from 315 V, 9.1 μA, 47 nC/m2, 69 μW to 858 V, 20 μA, 0.14 μC/m2, 206.7 μW). Then with the continuous increase of ∆T to 219 K, the surface charge density and output performance gradually decrease. At the optimal temperature difference (145 K), the biggest output current density (396 μA/cm2) has been obtained, which is 13% larger than the reported record value (350 μA/cm2).

scholarly journals Direct measurement of surface charge distribution in phase separating supported lipid bilayers

Nanoscale ◽  
2018 ◽  
Vol 10 (9) ◽  
pp. 4538-4544 ◽  
Author(s):  
Thomas Fuhs ◽  
Lasse Hyldgaard Klausen ◽  
Steffan Møller Sønderskov ◽  
Xiaojun Han ◽  
Mingdong Dong
Keyword(s):  
Membrane Proteins ◽  
Cell Membrane ◽  
Charge Density ◽  
Surface Charge ◽  
Charge Distribution ◽  
Lipid Bilayers ◽  
Surface Charge Density ◽  
Supported Lipid Bilayers ◽  
Local Surface ◽  
Surface Charge Distribution

The local surface charge density of the cell membrane influences regulation and localization of membrane proteins.

scholarly journals Understanding the Percolation Effect in Triboelectric Nanogenerator with Conductive Intermediate Layer

Research ◽  
2021 ◽  
Vol 2021 ◽  
pp. 1-8
Author(s):  
Binbin Zhang ◽  
Guo Tian ◽  
Da Xiong ◽  
Tao Yang ◽  
Fengjun Chun ◽  
...  
Keyword(s):  
Dielectric Permittivity ◽  
Charge Density ◽  
Surface Charge ◽  
Intermediate Layer ◽  
Surface Charge Density ◽  
Polyvinylidene Fluoride ◽  
High Performance ◽  
Triboelectric Nanogenerator ◽  
Percolation Effect ◽  
Pure Pvdf

Introducing the conductive intermediate layer into a triboelectric nanogenerator (TENG) has been proved as an efficient way to enhance the surface charge density that is attributed to the enhancement of the dielectric permittivity. However, far too little attention has been paid to the companion percolation, another key element to affect the output. Here, the TENG with MXene-embedded polyvinylidene fluoride (PVDF) composite film is fabricated, and the dependence of the output capability on the MXene loading is investigated experimentally and theoretically. Specifically, the surface charge density mainly depends on the dielectric permittivity at lower MXene loadings, and in contrast, the percolation becomes the degrading factor with the further increase of the conductive loadings. At the balance between the dielectric and percolation properties, the surface charge density of the MXene-modified TENG obtained 350% enhancement compared to that with the pure PVDF. This work shed new light on understanding the dielectric and percolation effect in TENG, which renders a universal strategy for the high-performance triboelectronics.

Predicting the Output of a Triboelectric Energy Harvester Undergoing Mechanical Pressure

2016 ◽  
Author(s):  
Danial Sharifi Kia ◽  
Shahrzad Towfighian ◽  
Congrui Jin
Keyword(s):  
Theoretical Model ◽  
Charge Density ◽  
Surface Charge ◽  
Surface Charge Density ◽  
Mechanical Energy ◽  
High Energy ◽  
Interfacial Structure ◽  
Triboelectric Nanogenerator ◽  
Contact Behavior ◽  
Interfacial Structures

Energy harvesting using a triboelectric nanogenerator (TENG) has been a major area of research in the recent years in order to harvest mechanical energy in different scales. High energy conversion efficiency, broad range of application in different systems and relatively easy fabrication process are among the factors demonstrating essential needs for TENG technology development. Performance of a TENG could be affected by many factors such as the frequency of vibration and the surface charge density. As a key factor in improving the power output of TENGs, surface charge density could be modified by the selection of proper charging materials and by increasing the contact area between the tribo-pairs. Although there have been numerous studies analyzing the performance of different tribo-pairs and different interfacial structures for a TENG, a systematical analysis of the contact phenomena between the interfacial structures in order to investigate the effects of different surface properties and structures such as, surface roughness, dielectric properties or the presence of nanostructures is still not available. In the current study, systematical numerical simulations have been performed on the adhesive contact behavior of the macro/nanostructures at the TENG interface. An interaction potential has been used to represent the adhesive interactions while surface deformations are coupled using half-space Green’s function. Furthermore, effects of the deformation of the interfacial structure on the performance and output of the TENG has been investigated by developing a theoretical model for a vertical-contact-mode TENG using a mass-spring system to represent the motion of the moving electrode. Coupling the theoretical model to the instantaneous deformation of the interfacial structure, real-time output of the TENG in terms of short-circuit voltage and open-circuit current has been studied in response to a predefined pressure input. The results of the current study demonstrate the effects of the deformation of the interfacial structure on the output characteristics of TENGs during the transition between partial-contact to full-contact modes. Numerical simulation results represent acceptable correlations with previously reported experimental data. The simulation package developed in this study is capable of simulating the contact behavior of the interfacial structure and predicting the deformed geometry.

Wide Range Fabrication of Wrinkle Patterns for Maximizing Surface Charge Density of a Triboelectric Nanogenerator

2018 ◽  
Vol 27 (1) ◽  
pp. 106-112 ◽  
Author(s):  
Xiaoliang Cheng ◽  
Zijian Song ◽  
Liming Miao ◽  
Hang Guo ◽  
Zongming Su ◽  
...  
Keyword(s):  
Charge Density ◽  
Surface Charge ◽  
Surface Charge Density ◽  
Triboelectric Nanogenerator ◽  
Wide Range

Improving energy conversion efficiency for triboelectric nanogenerator with capacitor structure by maximizing surface charge density

Nanoscale ◽  
2015 ◽  
Vol 7 (5) ◽  
pp. 1896-1903 ◽  
Author(s):  
Xianming He ◽  
Hengyu Guo ◽  
Xule Yue ◽  
Jun Gao ◽  
Yi Xi ◽  
...  
Keyword(s):  
Charge Density ◽  
Energy Conversion ◽  
Surface Charge ◽  
Conversion Efficiency ◽  
Carbon Nanoparticles ◽  
Surface Charge Density ◽  
Energy Conversion Efficiency ◽  
Triboelectric Nanogenerator ◽  
Capacitor Structure ◽  
Dielectric Polymer

The charge density on a dielectric polymer is determined by capacitance and can be maximized by mixing the polymer with some carbon nanoparticles.

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