Textile‐Based Triboelectric Nanogenerators for Self‐Powered Wearable Electronics

Kwak, Sung Soo; Yoon, Hong‐Joon; Kim, Sang Woo

doi:10.1002/adfm.201804533

Cited by 170 publications

(116 citation statements)

References 83 publications

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“…[3,4] Although ab road diversityo fm aterials ranging from inorganic to organic have been employedt op repare TENG device, as ystematic and complex molecular design of these materials to manage the consecutive energy conversion process remainasubstantial challenging. [5] Covalent organic frameworks (COFs) are au nique class of crystalline porous materials, which are constructed from organic buildingu nits via reversible chemical reactions. [6] Since the seminal work reported by Yaghi and co-workersi n2 005, [7] great progress over the last decadew as achieved in the exploration of topology diagrams and synthetic reactions.…”

mentioning

confidence: 99%

Bromine‐Functionalized Covalent Organic Frameworks for Efficient Triboelectric Nanogenerator

Zhai

Cui

Tong

et al. 2020

Chemistry A European J

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Covalent organic frameworks( COFs) enablep recise integration of variouso rganic building blocks into porouss keletons through topology predesign. Here,w e report the first example of COFs by integrating electron withdrawing bromine group onto the skeletons for triboelectricn anogenerators (TENG). The resulting framework exhibits high surface area and good crystallinity.T hus, the brominef unctionalizedC OF has more regular aligned p columns and arrays over the skeleton than bare COFs, which in turn significantly enhances chargetransport ability.A saresult, bromine functionalized COFs showed higher electrical outputp erformance at 5Hzw ith ap eak value of short circuit current density of 43.6 mAa nd outputv oltage of 416 V, which is 2a nd 1.3 times higher than those of bareC OFs (21.6 mAa nd 318 V),r espectively. These results demonstrated that this strategy for engineeringelectron withdrawingg roupso nt he skeleton could open an ew aspect of COFs for developing TENG devices.Triboelectricn anogenerators (TENG) are an ovel device that can effectively convert ambient mechanical energy,s uch as body motion, wind and vibratione nergy into electrical energy. [1] TENG has received increasing attention for harvesting mechanical energy because of their specific advantages,s uch as safety,s mall-size device, and easy fabrication. [2] As for TENG device, the current density ando utput voltage are the critical issuesf or its practical application. Furthermore, the frictional motions,t he environmental factors, especially the structure and functionality of the friction pair materials dominate the output performance of TENG device. [3,4] Although ab road diversityo fm aterials ranging from inorganic to organic have been employedt op repare TENG device, as ystematic and complex molecular design of these materials to manage the consecutive energy conversion process remainasubstantial challenging. [5] Covalent organic frameworks (COFs) are au nique class of crystalline porous materials, which are constructed from organic buildingu nits via reversible chemical reactions. [6] Since the seminal work reported by Yaghi and co-workersi n2 005, [7] great progress over the last decadew as achieved in the exploration of topology diagrams and synthetic reactions. [8][9][10] Benefiting from the features of designable regularp orous structures and versatile functionalities throught opologya nd building blocksd esign,C OFs have been regarded as one of the most promising materials in gas sorption [11,12] and separation, [13,14] sensing, [15] ion conductor, [16,17] catalysis, [18][19][20][21] energy storage, [13b, 22, 23] semiconductor [24, 25] and electronic devices. [26,27] In addition, another inherit advantage of COFs is their densely aligned p columns and arrayso ver the skeleton, which can be utilizedaspre-arranged pathways to facilitate charge transport. This distinct feature is hard to achieve from other inorganic and organic materials. Thus, COFs could offer an attractive structure-function platform for developing appropriate TENG...

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confidence: 99%

Bromine‐Functionalized Covalent Organic Frameworks for Efficient Triboelectric Nanogenerator

Zhai

Cui

Tong

et al. 2020

Chemistry A European J

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“…[42,43] Benefiting from the particular advantages of various choices of materials, easy fabrication, simple working mechanism, and low cost, triboelectric nanogenerator (TENG) could be an optimal option for textile-based energy harvesters and self-powered sensors. [44][45][46][47][48][49][50][51][52][53][54][55][56][57][58][59][60] However, the further advancement of the textile-based TENGs (T-TENGs) still faces challenges making its way to practical use due to the universal low output of them. To maintain a considerable output, the T-TENG mostly follows the contact-separation design where one device is divided into two pieces that are placed separately on two different body parts, making it vulnerable to all kinds of damages and effects from the environment and limited to few working scenarios.…”

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confidence: 99%

Self‐Sustainable Wearable Textile Nano‐Energy Nano‐System (NENS) for Next‐Generation Healthcare Applications

et al. 2019

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Wearable electronics presage a future in which healthcare monitoring and rehabilitation are enabled beyond the limitation of hospitals, and self‐powered sensors and energy generators are key prerequisites for a self‐sustainable wearable system. A triboelectric nanogenerator (TENG) based on textiles can be an optimal option for scavenging low‐frequency and irregular waste energy from body motions as a power source for self‐sustainable systems. However, the low output of most textile‐based TENGs (T‐TENGs) has hindered its way toward practical applications. In this work, a facile and universal strategy to enhance the triboelectric output is proposed by integration of a narrow‐gap TENG textile with a high‐voltage diode and a textile‐based switch. The closed‐loop current of the diode‐enhanced textile‐based TENG (D‐T‐TENG) can be increased by 25 times. The soft, flexible, and thin characteristics of the D‐T‐TENG enable a moderate output even as it is randomly scrunched. Furthermore, the enhanced current can directly stimulate rat muscle and nerve. In addition, the capability of the D‐T‐TENG as a practical power source for wearable sensors is demonstrated by powering Bluetooth sensors embedded to clothes for humidity and temperature sensing. Looking forward, the D‐T‐TENG renders an effective approach toward a self‐sustainable wearable textile nano‐energy nano‐system for next‐generation healthcare applications.

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“…This makes it difficult to solely rely on conventional energy storage devices as they need to be regularly replaced and re-charged, thus hindering their practical, sustainable, and broad-range applications of the wearable electronics. [1,2] In this regard, energy harvesting technology enables to address continuous power supply, ensuring sustainability of wearable devices. [3][4][5][6] In particular, triboelectric nanogenerators (TENGs) have attracted tremendous attention as sustainable power supply due to their versatility, such as availability in a variety of forms and ability to harness different kinds of mechanical energy.…”

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Hybrid Smart Fiber with Spontaneous Self‐Charging Mechanism for Sustainable Wearable Electronics

Cho

Pak

Lee

et al. 2020

Adv Funct Materials

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Smart wearable electronics that are fabricated on light‐weight fabrics or flexible substrates are considered to be of next‐generation and portable electronic device systems. Ideal wearable and portable applications not only require the device to be integrated into various fiber form factors, but also desire self‐powered system in such a way that the devices can be continuously supplied with power as well as simultaneously save the acquired energy for their portability and sustainability. Nevertheless, most of all self‐powered wearable electronics requiring both the generation of the electricity and storing of the harvested energy, which have been developed so far, have employed externally connected individual energy generation and storage fiber devices using external circuits. In this work, for the first time, a hybrid smart fiber that exhibits a spontaneous energy generation and storage process within a single fiber device that does not need any external electric circuit/connection is introduced. This is achieved through the employment of asymmetry coaxial structure in an electrolyte system of the supercapacitor that creates potential difference upon the creation of the triboelectric charges. This development in the self‐charging technology provides great opportunities to establish a new device platform in fiber/textile‐based electronics.

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Textile‐Based Triboelectric Nanogenerators for Self‐Powered Wearable Electronics

Cited by 170 publications

References 83 publications

Bromine‐Functionalized Covalent Organic Frameworks for Efficient Triboelectric Nanogenerator

Bromine‐Functionalized Covalent Organic Frameworks for Efficient Triboelectric Nanogenerator

Self‐Sustainable Wearable Textile Nano‐Energy Nano‐System (NENS) for Next‐Generation Healthcare Applications

Hybrid Smart Fiber with Spontaneous Self‐Charging Mechanism for Sustainable Wearable Electronics

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