scholarly journals Mechanical Energy Harvesting: Textile-Based Triboelectric Nanogenerators for Self-Powered Wearable Electronics (Adv. Funct. Mater. 2/2019)

2019 ◽  
Vol 29 (2) ◽  
pp. 1970011 ◽  
Author(s):  
Sung Soo Kwak ◽  
Hong-Joon Yoon ◽  
Sang-Woo Kim
Author(s):  
JIANG YANG ◽  
F Xu ◽  
Hanxiao Jiang ◽  
Conghuan Wang ◽  
Xingjia Li ◽  
...  

Piezoelectric materials are well known for their applications in self-powered sensing and mechanical energy harvesting. With the development of Internet of Things and wearable electronics, piezoelectric polymers are attracting more...


2019 ◽  
Vol 14 (11) ◽  
pp. 1572-1581 ◽  
Author(s):  
Shamsuddin ◽  
Saeed Ahmed Khan ◽  
Ahmed Ali ◽  
Abdul Qadir Rahimoon ◽  
Palwasha Jalalzai

A self-powered mechanical energy harvesting system consists of the storage system and the energy scavenging TENG. Triboelectric nanogenerator includes a system which integrates a self-powered sensor and the power generator, this triboelectric nanogenerator has the potential to be used in a modern wearable electronic TENG. It has been reported that triboelectric nanogenerator working under complicated deformation like bending, stretching and twisting brings the main problem. Here we have fabricated the shape adaptive Triboelectric nanogenerator which solves all the deformation issues and can harvest the mechanical energy through human body motion in any deformation, the fabricated TENG is a self-powered sensor which can sense the different human activities and can monitor the health issues, the TENG stores the energy directly to the capacitor for powering the wearable electronics. A human skin based triboelectric nanogenerator was designed from the silicon rubber and the copper acetate-II used as the electrode, which makes the TENG flexible self-powered sensor, it can be stretched up to 200%. The stretchable nature and the flexibility of the human skin based silicon rubber triboelectric nanogenerator makes it the promising flexible and shape-adaptive energy harvesting TENG. The fabricated TENG generated the open circuit voltage 70 V and the short circuit current 11 μA and delivered the power 55 μW at the load of 80 MΩ. 42 LEDs were powered directly from the TENG. The fabricated TENG has human skin tactile property which does not harm the human skin while using it multiple times. The layer of copper acetate is completely coated with silicone rubber. The fabricated TENG is flexible, biocompatible and cost effective.


RSC Advances ◽  
2021 ◽  
Vol 11 (28) ◽  
pp. 17437-17444
Author(s):  
Guoxia Li ◽  
Longwei Li ◽  
Panpan Zhang ◽  
Caiyun Chang ◽  
Fan Xu ◽  
...  

An ultra-stretchable and self-healing hydrogel is developed with graphene oxide and Laponite as collaborative physical crosslinking points, which is utilized in triboelectric nanogenerators for mechanical energy harvesting and self-powered sensing.


Materials ◽  
2020 ◽  
Vol 13 (21) ◽  
pp. 4980
Author(s):  
Tiago Rodrigues-Marinho ◽  
Nelson Castro ◽  
Vitor Correia ◽  
Pedro Costa ◽  
Senentxu Lanceros-Méndez

Energy harvesting systems for low-power devices are increasingly being a requirement within the context of the Internet of Things and, in particular, for self-powered sensors in remote or inaccessible locations. Triboelectric nanogenerators are a suitable approach for harvesting environmental mechanical energy otherwise wasted in nature. This work reports on the evaluation of the output power of different polymer and polymer composites, by using the triboelectric contact-separation systems (10 N of force followed by 5 cm of separation per cycle). Different materials were used as positive (Mica, polyamide (PA66) and styrene/ethylene-butadiene/styrene (SEBS)) and negative (polyvinylidene fluoride (PVDF), polyurethane (PU), polypropylene (PP) and Kapton) charge materials. The obtained output power ranges from 0.2 to 5.9 mW, depending on the pair of materials, for an active area of 46.4 cm2. The highest response was obtained for Mica with PVDF composites with 30 wt.% of barium titanate (BT) and PA66 with PU pairs. A simple application has been developed based on vertical contact-separation mode, able to power up light emission diodes (LEDs) with around 30 cycles to charge a capacitor. Further, the capacitor can be charged in one triboelectric cycle if an area of 0.14 m2 is used.


2017 ◽  
Vol 5 (24) ◽  
pp. 12252-12257 ◽  
Author(s):  
Meng Wang ◽  
Nan Zhang ◽  
Yingjie Tang ◽  
Heng Zhang ◽  
Chuan Ning ◽  
...  

A single-electrode triboelectric nanogenerator (S-TENG) based on sponge-like porous polytetrafluoroethylene (PTFE) thin films was developed.


2021 ◽  
Vol 16 (1) ◽  
Author(s):  
Yerzhan Nurmakanov ◽  
Gulnur Kalimuldina ◽  
Galymzhan Nauryzbayev ◽  
Desmond Adair ◽  
Zhumabay Bakenov

Abstract Harvesting abundant mechanical energy has been considered one of the promising technologies for developing autonomous self-powered active sensors, power units, and Internet-of-Things devices. Among various energy harvesting technologies, the triboelectric harvesters based on contact electrification have recently attracted much attention because of their advantages such as high performance, light weight, and simple design. Since the first triboelectric energy-harvesting device was reported, the continuous investigations for improving the output power have been carried out. This review article covers various methods proposed for the performance enhancement of triboelectric nanogenerators (TENGs), such as a triboelectric material selection, surface modification through the introduction of micro-/nano-patterns, and surface chemical functionalization, injecting charges, and their trapping. The main purpose of this work is to highlight and summarize recent advancements towards enhancing the TENG technology performance through implementing different approaches along with their potential applications. Graphic Abstract This paper presents a comprehensive review of the TENG technology and its factors affecting the output power as material selection, surface physical and chemical modification, charge injection, and trapping techniques.


Nano Energy ◽  
2018 ◽  
Vol 48 ◽  
pp. 471-480 ◽  
Author(s):  
Qitao Zhou ◽  
Jun Gyu Park ◽  
Kyeong Nam Kim ◽  
Ashish Kumar Thokchom ◽  
Juyeol Bae ◽  
...  

2021 ◽  
Vol 30 (9) ◽  
pp. 11-15
Author(s):  
Yoon-Hwae HWANG

Energy harvesting is the process by which energy can be obtained from external sources and used for wearable electronics and wireless sensor networks. Piezoelectric nanogenerators are energy harvesting devices that convert mechanical energy into electric energy by using nanostructured materials. This article summarizes work to date on piezoelectric nanogenerators, starting with the basic theory of piezo- and flexo-electricity and moving through reports on nanogenerators using nanostructures, flexible substrates and alternative materials. A sufficient power generated from nanogenerators suggests feasible applications for either power sources or strain sensors of highly integrated nanodevices. Further improvements in nanogenerators holds promise for the development of self-powered implantable and wearable electronics.


Sign in / Sign up

Export Citation Format

Share Document