Triboelectric Nanogenerators: Entirely, Intrinsically, and Autonomously Self‐Healable, Highly Transparent, and Superstretchable Triboelectric Nanogenerator for Personal Power Sources and Self‐Powered Electronic Skins (Adv. Funct. Mater. 40/2019)

Obtaining sustainable, high output power supply from triboelectric nanogenerators still remains a major issue which restricts their widespread use in self-powered electronic applications. In this work, an ultra-high performance, non-toxic,...

Download Full-text

Mesoporous Highly-Deformable Composite Polymer for a Gapless Triboelectric Nanogenerator via a One-Step Metal Oxidation Process

Micromachines ◽

10.3390/mi9120656 ◽

2018 ◽

Vol 9 (12) ◽

pp. 656 ◽

Cited By ~ 5

Author(s):

Hee Hwang ◽

Younghoon Lee ◽

Choongyeop Lee ◽

Youngsuk Nam ◽

Jinhyoung Park ◽

...

Keyword(s):

Large Scale ◽

Cost Effective ◽

Triboelectric Nanogenerator ◽

Pressure Sensitivity ◽

Composite Polymer ◽

Pdms Film ◽

One Step ◽

Self Powered ◽

Triboelectric Nanogenerators ◽

Flake Structure

The oxidation of metal microparticles (MPs) in a polymer film yields a mesoporous highly-deformable composite polymer for enhancing performance and creating a gapless structure of triboelectric nanogenerators (TENGs). This is a one-step scalable synthesis for developing large-scale, cost-effective, and light-weight mesoporous polymer composites. We demonstrate mesoporous aluminum oxide (Al2O3) polydimethylsiloxane (PDMS) composites with a nano-flake structure on the surface of Al2O3 MPs in pores. The porosity of mesoporous Al2O3-PDMS films reaches 71.35% as the concentration of Al MPs increases to 15%. As a result, the film capacitance is enhanced 1.8 times, and TENG output performance is 6.67-times greater at 33.3 kPa and 4 Hz. The pressure sensitivity of 6.71 V/kPa and 0.18 μA/kPa is determined under the pressure range of 5.5–33.3 kPa. Based on these structures, we apply mesoporous Al2O3-PDMS film to a gapless TENG structure and obtain a linear pressure sensitivity of 1.00 V/kPa and 0.02 μA/kPa, respectively. Finally, we demonstrate self-powered safety cushion sensors for monitoring human sitting position by using gapless TENGs, which are developed with a large-scale and highly-deformable mesoporous Al2O3-PDMS film with dimensions of 6 × 5 pixels (33 × 27 cm2).

Download Full-text

A highly shape-adaptive, stretchable design based on conductive liquid for energy harvesting and self-powered biomechanical monitoring

Science Advances ◽

10.1126/sciadv.1501624 ◽

2016 ◽

Vol 2 (6) ◽

pp. e1501624 ◽

Cited By ~ 161

Author(s):

Fang Yi ◽

Xiaofeng Wang ◽

Simiao Niu ◽

Shengming Li ◽

Yajiang Yin ◽

...

Keyword(s):

Energy Harvesting ◽

Three Dimensional ◽

Power Source ◽

Triboelectric Nanogenerator ◽

Stretchable Electronics ◽

Large Area ◽

Conductive Liquid ◽

Power Sources ◽

Energy Harvesters ◽

Self Powered

The rapid growth of deformable and stretchable electronics calls for a deformable and stretchable power source. We report a scalable approach for energy harvesters and self-powered sensors that can be highly deformable and stretchable. With conductive liquid contained in a polymer cover, a shape-adaptive triboelectric nanogenerator (saTENG) unit can effectively harvest energy in various working modes. The saTENG can maintain its performance under a strain of as large as 300%. The saTENG is so flexible that it can be conformed to any three-dimensional and curvilinear surface. We demonstrate applications of the saTENG as a wearable power source and self-powered sensor to monitor biomechanical motion. A bracelet-like saTENG worn on the wrist can light up more than 80 light-emitting diodes. Owing to the highly scalable manufacturing process, the saTENG can be easily applied for large-area energy harvesting. In addition, the saTENG can be extended to extract energy from mechanical motion using flowing water as the electrode. This approach provides a new prospect for deformable and stretchable power sources, as well as self-powered sensors, and has potential applications in various areas such as robotics, biomechanics, physiology, kinesiology, and entertainment.

Download Full-text

Effects of Embedded TiO2−x Nanoparticles on Triboelectric Nanogenerator Performance

Micromachines ◽

10.3390/mi9080407 ◽

2018 ◽

Vol 9 (8) ◽

pp. 407 ◽

Cited By ~ 7

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.

Download Full-text

Powering Healthcare IoT Sensors-Based Triboelectric Nanogenerator

IoT Architectures, Models, and Platforms for Smart City Applications - Advances in Computer and Electrical Engineering ◽

10.4018/978-1-7998-1253-1.ch002 ◽

2020 ◽

pp. 29-51

Author(s):

Saeed Ahmed Khan ◽

Shamsuddin Lakho ◽

Ahmed Ali ◽

Abdul Qadir Rahimoon ◽

Izhar Hussain Memon ◽

...

Keyword(s):

Human Body ◽

Pressure Sensors ◽

Wearable Devices ◽

Temperature Sensors ◽

The Body ◽

Body Motion ◽

Triboelectric Nanogenerator ◽

Self Powered ◽

Fitness Tracking ◽

Triboelectric Nanogenerators

Most of the emerging electronic devices are wearable in nature. However, the frequent changing or charging the battery of all wearable devices is the big challenge. Interestingly, with those wearable devices that are directly associated with the human body, the body can be used in transferring or generating energy in a number of techniques. One technique is triboelectric nanogenerators (TENG). This chapter covers different applications where the human body is used as a triboelectric layer and as a sensor. Wearable TENG has been discussed in detail based on four basic modes that could be used to monitor the human health. In all the discussions, the main focus is to power the wearable healthcare internet of things (IoT) sensor through human body motion based on self-powered TENG. The IoT sensors-based wearable devices related to human body can be used to develop smart body temperature sensors, pressure sensors, smart textiles, and fitness tracking sensors.

Download Full-text

Magnetorheological Elastomer-Based Self-Powered Triboelectric Nanosensor for Monitoring Magnetic Field

Nanomaterials ◽

10.3390/nano11112815 ◽

2021 ◽

Vol 11 (11) ◽

pp. 2815

Author(s):

Dong Wan ◽

Ningchen Ma ◽

Taochuang Zhao ◽

Xiaojing Cui ◽

Zhaosu Wang ◽

...

Keyword(s):

Magnetic Field ◽

Fast Response ◽

Magnetic Sensor ◽

Triboelectric Nanogenerator ◽

Magnetorheological Elastomer ◽

Field Range ◽

Power Sources ◽

Electrostatic Induction ◽

External Power ◽

Self Powered

The adaptable monitoring of the ubiquitous magnetic field is of great importance not only for scientific research but also for industrial production. However, the current detecting techniques are unwieldly and lack essential mobility owing to the complex configuration and indispensability of the power source. Here, we have constructed a self-powered magnetic sensor based on a subtle triboelectric nanogenerator (TENG) that consists of a magnetorheological elastomer (MRE). This magnetic sensor relies on triboelectrification and electrostatic induction to produce electrical signals in response to the MRE’s deformation induced by the variational magnetic field without using any external power sources. The fabricated magnetic sensor shows a fast response of 80ms and a desirable sensitivity of 31.6 mV/mT in a magnetic field range of 35–60 mT as well as preliminary vectorability enabled by the multichannel layout. Our work provides a new route for monitoring dynamic magnetic fields and paves a way for self-powered electric-magnetic coupled applications.

Download Full-text

Self-powered ammonia synthesis under ambient conditions via N2 discharge driven by Tesla turbine triboelectric nanogenerators

Microsystems & Nanoengineering ◽

10.1038/s41378-020-00235-w ◽

2021 ◽

Vol 7 (1) ◽

Author(s):

Kai Han ◽

Jianjun Luo ◽

Jian Chen ◽

Baodong Chen ◽

Liang Xu ◽

...

Keyword(s):

Large Scale ◽

Ammonia Synthesis ◽

High Energy ◽

Triboelectric Nanogenerator ◽

Ambient Conditions ◽

Waste Gas ◽

Simulated Waste ◽

High Rotation Speed ◽

Self Powered ◽

Triboelectric Nanogenerators

AbstractAmmonia synthesis using low-power consumption and eco-friendly methods has attracted increasing attention. Here, based on the Tesla turbine triboelectric nanogenerator (TENG), we designed a simple and effective self-powered ammonia synthesis system by N2 discharge. Under the driving of the simulated waste gas, the Tesla turbine TENG showed high rotation speed and high output. In addition, the performance of two Tesla turbine TENGs with different gas path connections was systematically investigated and discussed. A controllable series-parallel connection with the control of gas supply time was also proposed. Taking advantage of the intrinsic high voltage, corona discharge in a N2 atmosphere was simply realized by a Tesla turbine TENG. With the flow of N2, the generated high-energy plasma can immediately react with water molecules to directly produce ammonia. The self-powered system achieved a yield of 2.14 μg h−1 (0.126 μmol h−1) under ambient conditions, showing great potential for large-scale synthesis.

Download Full-text

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

Beilstein Journal of Nanotechnology ◽

10.3762/bjnano.11.123 ◽

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.

Download Full-text

The Progress of PVDF as a Functional Material for Triboelectric Nanogenerators and Self-Powered Sensors

Micromachines ◽

10.3390/mi9100532 ◽

2018 ◽

Vol 9 (10) ◽

pp. 532 ◽

Cited By ~ 14

Author(s):

Jin Lee ◽

Jae Lee ◽

Jeong Baik

Keyword(s):

Output Power ◽

Polyvinylidene Fluoride ◽

Rapid Development ◽

Device Fabrication ◽

Innovative Technology ◽

Triboelectric Nanogenerator ◽

New Energy ◽

Piezoelectric Effects ◽

Self Powered ◽

Triboelectric Nanogenerators

Ever since a new energy harvesting technology, known as a triboelectric nanogenerator (TENG), was reported in 2012, the rapid development of device fabrication techniques and mechanical system designs have considerably made the instantaneous output power increase up to several tens of mW/cm2. With this innovative technology, a lot of researchers experimentally demonstrated that various portable/wearable devices could be operated without any external power. This article provides a comprehensive review of polyvinylidene fluoride (PVDF)-based polymers as effective dielectrics in TENGs for further increase of the output power to speed up commercialization of the TENGs, as well as the fundamental issues regarding the materials. In the end, we will also review PVDF-based sensors based on the triboelectric and piezoelectric effects of the PVDF polymers.

Download Full-text