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.

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.

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.

scholarly journals Boosting performances of triboelectric nanogenerators by optimizing dielectric properties and thickness of electrification layer

RSC Advances ◽  
2020 ◽  
Vol 10 (30) ◽  
pp. 17752-17759 ◽  
Author(s):  
Xiaofang Kang ◽  
Chongxiang Pan ◽  
Yanghui Chen ◽  
Xiong Pu
Keyword(s):  
Dielectric Constant ◽  
Dielectric Properties ◽  
High Dielectric Constant ◽  
Filler Content ◽  
Triboelectric Nanogenerator ◽  
Triboelectric Nanogenerators ◽  
High Dielectric

Enhanced output performances of a triboelectric nanogenerator (TENG) are achieved by optimizing the high-dielectric-constant filler content in the electrification layer and decreasing its thickness.

scholarly journals Effects of particle size of dielectric fillers on the output performance of piezoelectric and triboelectric nanogenerators

2021 ◽  
Author(s):  
Xiao Meng ◽  
Zhuo Zhang ◽  
Dabin Lin ◽  
Weiguo Liu ◽  
Shun Zhou ◽  
...  
Keyword(s):  
Particle Size ◽  
Dielectric Constant ◽  
Dielectric Properties ◽  
Output Voltage ◽  
Nanocomposite Films ◽  
Piezoelectric Composite ◽  
Portable Electronics ◽  
Output Performance ◽  
Triboelectric Nanogenerators ◽  
Electrical Output

AbstractRecently, piezoelectric/triboelectric nanogenerators based on piezoelectric composite materials have been intensively studied to achieve high electrical output performance. In this work, flexible BaTiO3 (BT)/PDMS nanocomposite films with various sizes and concentrations were fabricated and used as the nanogenerators. The influence of dielectric properties on the electrical output of nanogenerators was studied as well as the structure of the composites. The dielectric constant increased from 6.5 to 8 with the concentration of BT nanoparticles and decreased with the frequency from 102 to 106 Hz. Furthermore, the dielectric constant showed 11% decrease with the temperature range from 30 to 180 °C. It was found that the concentration of BT nanoparticles has promoted the electrical output of nanogenerators. The output voltage and current are all enhanced with the BT nanoparticles, which reached 200 V and 0.24 °A in TENG with 40 wt% BT nanoparticles, respectively. The selected device exhibited the power of 0.16 mW and employed to demonstrate its ability to power wearable/portable electronics by lighting the LEDs.

scholarly journals Tuning the Dielectric Constant and Surface Engineering of a BaTiO3/Porous PDMS Composite Film for Enhanced Triboelectric Nanogenerator Output Performance

ACS Omega ◽  
2021 ◽  
Author(s):  
Doldet Tantraviwat ◽  
Mutita Ngamyingyoud ◽  
Witsaroot Sripumkhai ◽  
Pattaraluck Pattamang ◽  
Gobwute Rujijanagul ◽  
...  
Keyword(s):  
Dielectric Constant ◽  
Composite Film ◽  
Surface Engineering ◽  
Triboelectric Nanogenerator ◽  
Output Performance

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.

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