scholarly journals Natural Rubber-TiO2 Nanocomposite Film for Triboelectric Nanogenerator Application

Polymers ◽  
2021 ◽  
Vol 13 (13) ◽  
pp. 2213
Author(s):  
Weeraya Bunriw ◽  
Viyada Harnchana ◽  
Chalathorn Chanthad ◽  
Van Ngoc Huynh
Keyword(s):  
Natural Rubber ◽  
Tio2 Nanoparticles ◽  
Mechanical Energy ◽  
Composite Films ◽  
Electrical Energy ◽  
Filler Concentration ◽  
Triboelectric Nanogenerator ◽  
Portable Electronics ◽  
Milling Method ◽  
Conversion Performance

In this research, natural rubber (NR)-TiO2 nanocomposites were developed for triboelectric nanogenerator (TENG) application to harvest mechanical energy into electrical energy. Rutile TiO2 nanoparticles were used as fillers in NR material to improve dielectric properties so as to enhance the energy conversion performance of the NR composite TENG. The effect of filler concentration on TENG performance of the NR-TiO2 composites was investigated. In addition, ball-milling method was employed to reduce the agglomeration of TiO2 nanoparticles in order to improve their dispersion in the NR film. It was found that the TENG performance was significantly enhanced due to the increased dielectric constant of the NR-TiO2 composite films fabricated from the ball-milled TiO2. The TENG, fabricated from the NR-TiO2 composite using 24 h ball-milled TiO2 at 0.5%wt, delivered the highest power density of 237 mW/m2, which was almost four times higher than that of pristine NR TENG. Furthermore, the applications of the fabricated NR-TiO2 TENG as a power source to operate portable electronics devices were also demonstrated.

A New Type of Self Driven Door Handle

2017 ◽  
Vol 9 (4) ◽  
pp. 67-79
Author(s):  
Yiping Deng ◽  
Lu Liao ◽  
Chengguang Wu ◽  
Ying Wu ◽  
Xiaoyun Zhang ◽  
...  
Keyword(s):  
Real Time ◽  
Power Management ◽  
Output Signal ◽  
Mechanical Energy ◽  
Electrical Energy ◽  
Wireless Transmission ◽  
Triboelectric Nanogenerator ◽  
Light Weight ◽  
Wireless Receiver ◽  
New Type

In this article, authors report on a smart door handle that can efficiently collect and utilize ambient energy to power itself. A Triboelectric Nanogenerator which presents characteristics including easy fabrication, small size and light weight is embedded in the door. When begin to turn the handle, the TENG can convert the mechanical energy into the electrical energy, and the power can up to 0.023W. At the same time, the internal circuit will send a single to identify the action of opening the door, and then the wireless receiver will make appropriate responses after receiving the signal. In this article, the authors designed a wireless transmission circuit to ensure that the transmitter and receiver can communicate in real time. Due to the TENG's output is AC signal which can't power the device directly, so the power management circuit was designed to process the signal. To analyze and compare the output signal, the authors designed two power management circuits. Both the circuits can convert the AC signal into the DC signal, the voltage can up to 5V and the current can up to 3mA.

Enhanced Dielectric and Mechanical Properties of Natural Rubber Composites Filled with Gold Nanoparticles

2018 ◽  
Vol 772 ◽  
pp. 43-47
Author(s):  
Massaya Longsaman ◽  
Thitima Rujiralai ◽  
Wilairat Cheewasedtham ◽  
Chatchai Putson
Keyword(s):  
Mechanical Properties ◽  
Gold Nanoparticles ◽  
Dielectric Constant ◽  
Natural Rubber ◽  
Composite Films ◽  
Filler Concentration ◽  
Transmission Electron ◽  
Interfacial Surface ◽  
Solution Casting Method ◽  
Set Up

In this work, we present the novel robust material, modified natural rubber (NR) composites filled with gold nanoparticles (AuNPs). To investigate its outstanding properties, dielectric, electrical and mechanical properties of NR and modified NR composites filled with gold nanoparticles (AuNPs) were studied. The NR and all composite films were prepared by using solution casting method. The size of the synthetic AuNPs was analyzed by Transmission Electron Microscope (TEM) technique. The dispersion of AuNPs fillers within the NR matrix was investigated by scanning electron microscopy (SEM). Dielectric and electrical properties of NR composites were analyzed as function of filler concentration and frequency in a range of 100-105 Hz, observed with the LCR analyzer. Elastic modulus of all samples was evaluated by a strain gauge set up. It was found that the dielectric constant is inversely related to the frequency. Moreover, the dielectric constant and the electrical conductivity strongly increase in proportional to the AuNPs filler content. In comparison at AuNPs concentration of 0.0010% by weight, it was observed that the dielectric constant of NR composites is eight times larger than the pure NR, while the mechanical properties of the NR composites slightly increase in proportional to the AuNPs. As consequence, the interfacial surface area significantly affects the electrical and mechanical properties of those NR composites.

scholarly journals Triboelectric nanogenerator based on Teflon/vitamin B1 powder for self-powered humidity sensing

2020 ◽  
Vol 11 ◽  
pp. 1394-1401
Author(s):  
Liangyi Zhang ◽  
Huan Li ◽  
Yiyuan Xie ◽  
Jing Guo ◽  
Zhiyuan Zhu
Keyword(s):  
Relative Humidity ◽  
Mechanical Energy ◽  
Vitamin B1 ◽  
Cost Effective ◽  
Electrical Energy ◽  
Open Circuit ◽  
Triboelectric Nanogenerator ◽  
Cost Effective Method ◽  
Self Powered ◽  
Triboelectric Nanogenerators

Recently, there has been growing interest in triboelectric nanogenerators (TENGs) that can effectively convert various forms of mechanical energy input into electrical energy. In the present study, a novel Teflon/vitamin B1 powder based triboelectric nanogenerator (TVB-TENG) is proposed. Paper is utilized as a supporting platform for triboelectrification between a commercial Teflon tape and vitamin B1 powder. The measured open-circuit voltage was approximately 340 V. The TVB-TENG can be applied as a humidity sensor and exhibits a linear and reversible response to the relative humidity of the environment. Moreover, the change in relative humidity is also indicated by the change in luminosity of a set of light-emitting diodes (LEDs) integrated in the TVB-TENG system. The TVB-TENG proposed in this study illustrates a cost-effective method for portable power supply and sensing devices.

Synthesis of fluorinated polyimide towards a transparent triboelectric nanogenerator applied on screen surface

2021 ◽  
Author(s):  
Jun Wu ◽  
Xiaoli Wang ◽  
Jiyu He ◽  
Zhihao Li ◽  
Lizhou Li
Keyword(s):  
Mechanical Energy ◽  
Electrical Energy ◽  
Touch Screen ◽  
Polyimide Film ◽  
Triboelectric Nanogenerator ◽  
Fluorinated Polyimide ◽  
Screen Surface

A fluorinated polyimide film is synthesized toward the transparent triboelectric nanogenerator applied on touch screen surface to convert the mechanical energy into electrical energy.

scholarly journals Yo-Yo Inspired Triboelectric Nanogenerator

Energies ◽  
2021 ◽  
Vol 14 (7) ◽  
pp. 1798
Author(s):  
Deokjae Heo ◽  
Jihoon Chung ◽  
Gunsub Shin ◽  
Minhyeong Seok ◽  
Chanhee Lee ◽  
...  
Keyword(s):  
Dielectric Material ◽  
Mechanical Energy ◽  
Electrical Energy ◽  
Triboelectric Nanogenerator ◽  
Power Sources ◽  
Vast Number ◽  
Hand Motion ◽  
Energy Harvesters ◽  
Triboelectric Nanogenerators ◽  
And Function

Recently, as the demand for sustainable and renewable energy to power a large number of small electronics and sensors has increased, various mechanical energy harvesters such as electromagnetic, piezoelectric, and triboelectric generators have been highlighted because they have no environmental constraints to generate electricity and function as sustainable power sources. Among these generators, triboelectric nanogenerators (TENGs), which produce electrical energy via triboelectrification and electrostatic induction, are a promising energy harvesting technology that can utilize existing materials or the structure of existing commercial products. Considering the vast number of independent portable electronics used today, the development of hand-driven TENGs is important. There is great demand for TENG considering both commercial product-inspired designs, which are the merit of TENG itself, and the hand-driven type. However, relevant studies are still lacking, and therefore further studies in these areas are required. In this study, we developed a novel triboelectric nanogenerator (Y-TENG) inspired by the Yo-Yo that can produce a sustainable electric output by hand motion input. One generator of Y-TENG produced a maximum VOC of 10 V and an ICC of 0.7 μA. Peak/root mean square (RMS) voltage output-based quantitative analysis for the optimized number of blades and dielectric material was performed. The proposed Y-TENG was able to continuously light up three light-emitting diodes (LEDs) while the Y-TENG moved up and down.

scholarly journals Chemical Functionalization of Bacterial Cellulose Film for Enhancing Output Performance of Bio-Triboelectric Nanogenerator

2021 ◽  
Vol 12 (2) ◽  
pp. 1587-1600
Keyword(s):  
Bacterial Cellulose ◽  
Functional Groups ◽  
Mechanical Energy ◽  
Electrical Energy ◽  
Triboelectric Nanogenerator ◽  
Cellulose Film ◽  
Structure And Morphology ◽  
Output Performance ◽  
Ftir Technique ◽  
Sem Imaging

Triboelectric nanogenerator (TENG) is a promising technology for converting mechanical energy into electrical energy. In the present research, a bio-TENG based on bacterial cellulose (BC) was fabricated, and the performance was improved by surface modification. The BC films were chemically functionalized by phosphorylation and sulfonation processes. The FTIR technique confirmed the functional groups on the phosphorylated and sulfonated BCs. The hydrophobic/hydrophilic properties were studied and found that the unmodified BC, as well as the functionalized BC, were both hydrophilic. The structure and morphology of the BC nanofibers were investigated by SEM imaging. It was shown that after phosphorylation and sulfonation, the BC nanofiber surface became rougher, and the fibers were densely packed. The pores between the nanofibers almost disappeared. These have resulted from the coating of the phosphate and sulfonic functional groups on the BC nanofibers. For TENG measurement, the BC film was paired with PTFE under a single-electrode measuring mode. The functionalized BC showed improved output performance compared to the unmodified BC, possibly due to the rougher and denser BC surface and the change in the BC triboelectric potential. This research demonstrated a novel but straightforward way to enhance the output performance of the bio-TENG.

Analyze and Simulation of a Typical MEMS RPG Using MCNP Code

2008 ◽  
Author(s):  
sM. Mohamadian ◽  
S. A. H. Feghhi ◽  
H. Afarideh
Keyword(s):  
Mechanical Energy ◽  
Electrical Energy ◽  
Cellular Phones ◽  
Mems Devices ◽  
Beta Particles ◽  
Portable Electronics ◽  
Energy Conversion Process ◽  
Electromechanical Energy ◽  
Piezoelectric Unimorph ◽  
Nuclear Battery

Microbatteries are essential for portable electronics, cellular phones and MEMs devices to be miniaturized. Use of radioisotopes to realize nuclear microbatteries have been extensively researched. Electrical energy of a nuclear battery is produced from radioactive materials decaying by a suitable energy conversion process. Our approach in this paper is study of a direct collected charge to motion conversion. In this manuscript, the performance of radioisotope powered piezoelectric generator has been analyzed and simulated. The generator employs direct charging to convert radiated beta particles kinetic energy into stored electromechanical energy in a piezoelectric unimorph piezoelectricity to stored mechanical energy into extractable electrical energy.

scholarly journals A Contact-Mode Triboelectric Nanogenerator for Energy Harvesting from Marine Pipe Vibrations

Sensors ◽  
2021 ◽  
Vol 21 (4) ◽  
pp. 1514
Author(s):  
Rui Li ◽  
He Zhang ◽  
Li Wang ◽  
Guohua Liu
Keyword(s):  
Energy Harvesting ◽  
Dielectric Material ◽  
Mechanical Energy ◽  
Experimental Tests ◽  
Electrical Energy ◽  
Underlying Mechanism ◽  
Triboelectric Nanogenerator ◽  
Contact Mode ◽  
Output Performance ◽  
Ocean Environment

Structural health monitoring is of great significance to ensure the safety of marine pipes, while powering the required monitoring sensors remains a problem because the ocean environment is not amenable to the traditional ways of providing an external power supply. However, mechanical energy due to the vortex-induced vibration of pipelines may be harvested to power those sensors, which is a convenient, economic and environmentally friendly way. We here exploit a contact-separation mode triboelectric nanogenerator (TENG) to create an efficient energy harvester to transform the mechanical energy of vibrating pipes into electrical energy. The TENG device is composed of a tribo-pair of dielectric material films that is connected to a mass-spring base to guarantee the contact-separation motions of the tribo-pair. Experimental tests are conducted to demonstrate the output performance and long-term durability of the TENG device by attaching it to a sample pipe. A theoretical model for the energy harvesting system is developed for predicting the electrical output performance of the device. It is established that the normalized output power depends only on two compound variables with all typical factors taken into consideration simultaneously. The simple scale law is useful to reveal the underlying mechanism of the device and can guideline the optimization of the device based on multi-parameters analyses. The results here may provide references for designing contact-mode TENG energy harvesting devices based on the vibration of marine pipes and similar structures.

scholarly journals Recent Progress in Self-Powered Sensors Based on Triboelectric Nanogenerators

Sensors ◽  
2021 ◽  
Vol 21 (21) ◽  
pp. 7129
Author(s):  
Junpeng Wu ◽  
Yang Zheng ◽  
Xiaoyi Li
Keyword(s):  
Mechanical Energy ◽  
Rapid Development ◽  
Electrical Energy ◽  
Displacement Current ◽  
Triboelectric Nanogenerator ◽  
Energy Harvesters ◽  
The Future ◽  
Quantitative Analysis Method ◽  
Self Powered ◽  
Triboelectric Nanogenerators

The emergence of the Internet of Things (IoT) has subverted people’s lives, causing the rapid development of sensor technologies. However, traditional sensor energy sources, like batteries, suffer from the pollution problem and the limited lifetime for powering widely implemented electronics or sensors. Therefore, it is essential to obtain self-powered sensors integrated with renewable energy harvesters. The triboelectric nanogenerator (TENG), which can convert the surrounding mechanical energy into electrical energy based on the surface triboelectrification effect, was born of this background. This paper systematically introduces the working principle of the TENG-based self-powered sensor, including the triboelectrification effect, Maxwell’s displacement current, and quantitative analysis method. Meanwhile, this paper also reviews the recent application of TENG in different fields and summarizes the future development and current problems of TENG. We believe that there will be a rise of TENG-based self-powered sensors in the future.

scholarly journals Methods to Improve Energy Conversion Efficiency of Dielectric Elastomer Generators

2019 ◽  
Vol 804 ◽  
pp. 63-67
Author(s):  
Heng Tong Cheng ◽  
Zhen Qiang Song ◽  
Shijie Zhu ◽  
Kazuhiro Ohyama
Keyword(s):  
Energy Conversion ◽  
Conversion Efficiency ◽  
Mechanical Energy ◽  
Electrical Energy ◽  
Input Voltage ◽  
Energy Conversion Efficiency ◽  
Stretch Ratio ◽  
Dielectric Elastomer ◽  
Conversion Performance ◽  
Ratio Range

Dielectric elastomer generators (DEGs) are based on the electromechanical response of the dielectric elastomer film sandwiched between the compliant electrodes on each side, which are capable of converting mechanical energy from diverse sources (e.g, ocean wave) into electrical energy. In essence, DEG is a voltage up-converter using mechanical energy to increase the electrical energy of the charge on a soft capacitor. We evaluated the effect of input voltage and the pre-stretch ratios on energy conversion efficiency of DEG. With a power supply of 2.2kV and pre-stretch ratio of 2, the maximum net electrical energy density and energy conversion efficiency in a single harvesting cycle were measured to be 413 J/kg and 15.8%, respectively. The experimental results showed that, with the higher input voltage and the larger stretch ratio range, higher the energy conversion performance of DEG can be achieved.

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