scholarly journals Magnetic Force Enhanced Sustainability and Power of Cam-Based Triboelectric Nanogenerator

Research ◽  
2021 ◽  
Vol 2021 ◽  
pp. 1-11 ◽  
Author(s):  
Hakjeong Kim ◽  
Hee Jae Hwang ◽  
Nghia Dinh Huynh ◽  
Khanh Duy Pham ◽  
Kyungwho Choi ◽  
...  
Keyword(s):  
Magnetic Force ◽  
Repulsive Force ◽  
Contact Forces ◽  
Triboelectric Nanogenerator ◽  
Mechanical Contact ◽  
Output Performance ◽  
Charging Time ◽  
Triboelectric Nanogenerators ◽  
Low Torque ◽  
Repulsive Forces

Since the first invention of triboelectric nanogenerators (TENGs) in 2012, many mechanical systems have been applied to operate TENGs, but mechanical contact losses such as friction and noise are still big obstacles for improving their output performance and sustainability. Here, we report on a magnet-assembled cam-based TENG (MC-TENG), which has enhanced output power and sustainability by utilizing the non-contact repulsive force between the magnets. We investigate the theoretical and experimental dynamic behaviors of MC-TENGs according to the effects of the contact modes, contact and separation times, and contact forces (i.e., pushing and repulsive forces). We suggest an optimized arrangement of magnets for the highest output performance, in which the charging time of the capacitor was 2.59 times faster than in a mechanical cam-based TENG (C-TENG). Finally, we design and demonstrate a MC-TENG-based windmill system to effectively harvest low-speed wind energy, ~4 m/s, which produces very low torque. Thus, it is expected that our frictionless MC-TENG system will provide a sustainable solution for effectively harvesting a broadband of wasted mechanical energies.

Embedding in-plane aligned MOF nanoflakes in silk fibroin for highly enhanced output performance of triboelectric nanogenerator

2021 ◽  
Author(s):  
Zixi Chen ◽  
Yule Cao ◽  
Weifeng Yang ◽  
Lin An ◽  
Hongwei Fan ◽  
...  
Keyword(s):  
Composite Materials ◽  
Silk Fibroin ◽  
Triboelectric Nanogenerator ◽  
Output Performance ◽  
Triboelectric Nanogenerators

Embedding active fillers into polymers to construct composite materials is an effective way to enhance the output performance of triboelectric nanogenerators (TENGs). Among various kinds of fillers, 2D fillers showed...

scholarly journals Effects of Embedded TiO2−x Nanoparticles on Triboelectric Nanogenerator Performance

Micromachines ◽  
2018 ◽  
Vol 9 (8) ◽  
pp. 407 ◽  
Author(s):  
Hyun-Woo Park ◽  
Nghia Huynh ◽  
Wook Kim ◽  
Hee Hwang ◽  
Hyunmin Hong ◽  
...  
Keyword(s):  
Oxygen Vacancies ◽  
Weight Ratio ◽  
Triboelectric Nanogenerator ◽  
Pdms Layer ◽  
Power Sources ◽  
Pdms Surface ◽  
Output Performance ◽  
Leakage Characteristics ◽  
Triboelectric Nanogenerators ◽  
High Output

Triboelectric nanogenerators (TENGs) are used as self-power sources for various types of devices by converting external waves, wind, or other mechanical energies into electric power. However, obtaining a high-output performance is still of major concern for many applications. In this study, to enhance the output performance of polydimethylsiloxane (PDMS)-based TENGs, highly dielectric TiO2−x nanoparticles (NPs) were embedded as a function of weight ratio. TiO2−x NPs embedded in PDMS at 5% showed the highest output voltage and current. The improved output performance at 5% is strongly related to the change of oxygen vacancies on the PDMS surface, as well as the increased dielectric constant. Specifically, oxygen vacancies in the oxide nanoparticles are electrically positive charges, which is an important factor that can contribute to the exchange and trapping of electrons when driving a TENG. However, in TiO2−x NPs containing over 5%, the output performance was significantly degraded because of the increased leakage characteristics of the PDMS layer due to TiO2−x NPs aggregation, which formed an electron path.

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

2018 ◽  
Vol 6 (1) ◽  
pp. 52-57 ◽  
Author(s):  
Zhenggang Fang ◽  
Kwok Hoe Chan ◽  
Xin Lu ◽  
Chuan Fu Tan ◽  
Ghim Wei Ho
Keyword(s):  
Dielectric Constant ◽  
Dielectric Property ◽  
Surface Texturing ◽  
Triboelectric Nanogenerator ◽  
Output Performance ◽  
Constant Control ◽  
Triboelectric Nanogenerators

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

scholarly journals Development of the Triboelectric Nanogenerator Using a Metal-to-Metal Imprinting Process for Improved Electrical Output

Micromachines ◽  
2018 ◽  
Vol 9 (11) ◽  
pp. 551 ◽  
Author(s):  
Moonwoo La ◽  
Jun Choi ◽  
Jeong-Young Choi ◽  
Taek Hwang ◽  
Jeongjin Kang ◽  
...  
Keyword(s):  
Short Circuit ◽  
Short Circuit Current ◽  
Contact Layer ◽  
Open Circuit ◽  
Triboelectric Nanogenerator ◽  
Output Performance ◽  
Triboelectric Nanogenerators ◽  
Electrical Induction ◽  
Advantageous Effect ◽  
Electrical Output

Triboelectric nanogenerators (TENG), which utilize contact electrification of two different material surfaces accompanied by electrical induction has been proposed and is considered as a promising energy harvester. Researchers have attempted to form desired structures on TENG surfaces and successfully demonstrated the advantageous effect of surface topography on its electrical output performance. In this study, we first propose the structured Al (SA)-assisted TENG (SA-TENG), where one of the contact layers of the TENG is composed of a structured metal surface formed by a metal-to-metal (M2M) imprinting process. The fabricated SA-TENG generates more than 200 V of open-circuit voltage and 60 µA of short-circuit current through a simple finger tapping motion. Given that the utilization of the M2M imprinting process allows for the rapid, versatile and easily accessible structuring of various metal surfaces, which can be directly used as a contact layer of the TENG to substantially enhance its electrical output performance, the present study may considerably broaden the applicability of the TENG in terms of its fabrication standpoint.

Enhancing the Output Performance of Triboelectric Nanogenerator via Grating‐Electrode‐Enabled Surface Plasmon Excitation

2019 ◽  
Vol 9 (44) ◽  
pp. 1902725 ◽  
Author(s):  
Lingxiao Gao ◽  
Xin Chen ◽  
Shan Lu ◽  
Hong Zhou ◽  
Weibo Xie ◽  
...  
Keyword(s):  
Surface Plasmon ◽  
Triboelectric Nanogenerator ◽  
Plasmon Excitation ◽  
Output Performance ◽  
Surface Plasmon Excitation

scholarly journals Enhanced Output Performance of ZnO Thin Film Triboelectric Nanogenerators by Leveraging Surface Limited Ga Doping and Insulting Bulk

Nano Energy ◽  
2021 ◽  
pp. 106394
Author(s):  
Ping-Che Lee ◽  
Yi-Chen Ou ◽  
Ruey-Chi Wang ◽  
Chuan-Pu Liu
Keyword(s):  
Thin Film ◽  
Zno Thin Film ◽  
Output Performance ◽  
Triboelectric Nanogenerators ◽  
Ga Doping

Anomalous output performance enhancement of RGO-based triboelectric nanogenerators by Cu-bonding

Nano Energy ◽  
2021 ◽  
Vol 86 ◽  
pp. 106126
Author(s):  
Ruey-Chi Wang ◽  
Yu-Cheng Lin ◽  
Po-Tsang Chen ◽  
Hsiu-Cheng Chen ◽  
Wan-Ting Chiu
Keyword(s):  
Performance Enhancement ◽  
Output Performance ◽  
Triboelectric Nanogenerators ◽  
Cu Bonding

Boosting the Output Performance of the Triboelectric Nanogenerator through the Nonlinear Oscillator

2021 ◽  
Vol 13 (5) ◽  
pp. 6331-6338
Author(s):  
Dong Guan ◽  
Guoqiang Xu ◽  
Xin Xia ◽  
Jiaqi Wang ◽  
Yunlong Zi
Keyword(s):  
Nonlinear Oscillator ◽  
Triboelectric Nanogenerator ◽  
Output Performance

scholarly journals Cellulose Paper Modified by a Zinc Oxide Nanosheet Using a ZnCl2-Urea Eutectic Solvent for Novel Applications

Nanomaterials ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 1111
Author(s):  
Changmei Lin ◽  
Duo Chen ◽  
Zifeng Hua ◽  
Jun Wang ◽  
Shilin Cao ◽  
...  
Keyword(s):  
Zinc Oxide ◽  
Antibacterial Activity ◽  
Cellulose Fibers ◽  
Human Motion ◽  
Triboelectric Nanogenerator ◽  
Crystalline Region ◽  
Ptfe Film ◽  
Cellulose Paper ◽  
Output Performance ◽  
Aqueous Solvent

Cellulose paper has been functionalized by nanoparticles such as Ag nanoparticles, TiO2, and BaTiO3 for versatile applications including supercapacitor, sensors, photoactivity, and packaging. Herein, zinc oxide (ZnO) nanosheet-modified paper (ZnO@paper) with excellent antibacterial properties was fabricated via a mild ZnCl2-urea eutectic solvent. In this proposed method, cellulose fibers as the raw material for ZnO@paper were treated by an aqueous solvent of ZnCl2-urea; the crystalline region was destroyed and [ZnCl]+-based cations were adsorbed on the surface of cellulose fibers, facilitating more ZnO growth on ZnO@paper. A flexible paper-based triboelectric nanogenerator (P-TENG) was made of ZnO@paper paired with a PTFE film. The P-TENG presents high triboelectric output performance and antibacterial activity. For instance, the output voltage and current of the P-TENG were 77 V and 0.17 μA, respectively. ZnO@paper showed excellent antibacterial activity against E. coli and S. aureus, suggesting that a P-TENG can restrain and kill the bacteria during the working process. The results also indicated that ZnO could improve the surface roughness of cellulose paper, enhancing the output performance of a flexible P-TENG. In addition, the potential application of a P-TENG-based pressure sensor for determining human motion information was also reported. This study not only produced a high-performance P-TENG for fabricating green and sustainable electronics, but also provides an effective and novel method for ZnO@paper preparation.

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