Triboelectric nanogenerator: from alternating current to direct current

Liu, Di; Zhou, Linglin; Wang, Zhong Lin; Wang, Jie

doi:10.1016/j.isci.2020.102018

Cited by 74 publications

(59 citation statements)

References 106 publications

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“…The energy distribution and state density of the two corresponding surfaces are proportional to CPD. The Fermi level of the conducting surface and the effective Fermi level of the insulator lead to CPD [12]. The energy gap between the acceptor and donor states is defined as the effective Fermi level of an insulator.…”

Section: The Principle Of Teng 21 Triboelectrification Effect (Contact Electrification)mentioning

confidence: 99%

Recent Progress in Self-Powered Sensors Based on Triboelectric Nanogenerators

Yang

2021

Sensors

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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.

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Section: The Principle Of Teng 21 Triboelectrification Effect (Contact Electrification)mentioning

confidence: 99%

Recent Progress in Self-Powered Sensors Based on Triboelectric Nanogenerators

Yang

2021

Sensors

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“…Besides, the DC TENG, invented by J. Wang's group, is a strategy to directly provide DC current without rectifier and provide high output power. [21][22][23] However, these reports are bounded and limited to their special designed TENGs.…”

Section: Introductionmentioning

confidence: 99%

“…[1,2] Compared with traditional energy generators, TENG has demonstrated great advantages in efficiency, flexibility, lightweight, environmentally friendly, and environmental adaptability. [3][4][5] As a brand-new invention by Z. L. Wang in 2012, [6] TENG takes a tremendous advancement in various aspects, such as triboelectric mechanism, [7][8][9] structure optimization, [10,11] material research, [12][13][14] application extension, [15][16][17][18] output power, [19,20] direct current (DC) TENG, [21][22][23] and power management system (PMS). [24] However, TENG still has some problems to be addressed.…”

mentioning

confidence: 99%

Flexible Film‐Discharge‐Switch Assisted Universal Power Management System for the Four Operation Modes of Triboelectric Nanogenerators

Yan

Liu

Chen

et al. 2022

Advanced Energy Materials

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energy from nature and the human body, and to power billions of distributed electronics and sensor networks. [1,2] Compared with traditional energy generators, TENG has demonstrated great advantages in efficiency, flexibility, lightweight, environmentally friendly, and environmental adaptability. [3][4][5] As a brand-new invention by Z. L. Wang in 2012, [6] TENG takes a tremendous advancement in various aspects, such as triboelectric mechanism, [7][8][9] structure optimization, [10,11] material research, [12][13][14] application extension, [15][16][17][18] output power, [19,20] direct current (DC) TENG, [21][22][23] and power management system (PMS). [24] However, TENG still has some problems to be addressed. For example, the energy-transfer efficiency from TENG to loads in real applications is not optimal. The reason is that TENG always mismatches with the impedance of load when directly powering electronics or storing electricity generated by the triboelectrification effect. Fortunately, as a bridge between TENG and electronics to reduce the mismatch and improve the energy-transfer efficiency, [24] PMS is invented. Consisting of a temporary storage capacitor (C t ), a switch, and a buck circuit, [25][26][27][28][29] PMS converts random energy from TENG into a steady DC power supply for driving electronics in high efficiency. For example, with and without a high-performance PMS in practical applications, the speed of energy storage in a capacitor can differ by two orders of magnitude. [30] Furthermore, the improvement is reported many times, such as quickly starting up and simultaneously driving multiple devices. [25,28,30,31] The remarkable value of PMS has attracted a lot of attention and leads to various designs, following the same principle and similar topological structures but with different switch designs. [24,25,28] The study of switches, as the key component of PMS, becomes the main effort. In the early stage of switch development (from 2013), reported switches start the PMS field but are bounded together with and followed the movement of TENG, indicating the lowest adaptability in applications. [27,30,[32][33][34][35][36] In the next development stage (from 2015), to investigate the principle of PMS, many active electronic switches are proposed and studied. [25,28,29] Using metal-oxide Triboelectric nanogenerators (TENGs) are used to harvest high entropy energy. To optimize the energy harvesting, storage and effective utilization, a critical part is the power management system (PMS), which requires an ideal electrical switch as the key component. However, the current switch technologies cannot adapt and enhance the charging for the four operation modes of TENG simultaneously. Herein, a flexible film-discharge-switch (FDS), delivering an averaged charge-enhance factor over 100 under four operation modes of TENG, compared to directly charging a capacitor with conventional rectifier is reported. More specifically, the charge-enhancement factors of the FDS are 134.3, 64.7, 97.0, and 136.5 for the modes of ...

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“…Therefore, directcurrent triboelectric nanogenerators (DC-TENGs) have attracted considerable interest from researchers as a promising solution to solve the above problems. It believes that the ability to generate DC power enables DC-TENGs to have great potential for practical applications with advantages for the miniaturization of self-powered systems and the high efficiency of energy storage [12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

A Direct-Current Triboelectric Nanogenerator Energy Harvesting System Based on Water Electrification for Self-Powered Electronics

Nguyen

et al. 2022

Applied Sciences

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This study aimed to develop a simple but effective mechanical-to-electrical energy conversion for harvesting hydrokinetic energy based on triboelectric nanogenerator (TENG) technology. Here, a direct-current fluid-flow-based TENG is reported as a potential solution to solve the inconvenience of directly powering electronic devices where direct-current (DC) power is required. The falling of a water droplet (about 1.06 mL) from an elastomeric pipe can generate an open-circuit voltage of ~35 V, short-circuit current of 3.7 µA, and peak power of 57.6 µW by passing through a separated electrode. Notably, the electrical responses have the distinct characteristics of pulsed direct current. The ability to generate DC outputs enables the TENG to directly drive electronic devices. Our experimental results prove that this TENG can act as a power source to directly light up 50 light-emitting diodes without requiring a rectifier, and, also, the produced electric energy was demonstrated that can be stored directly in a capacitor to power commercial temperature and humidity IoT sensors. Furthermore, the device shows a greatly varied output voltage based on the droplet flow rate, with a linearity R2 = 0.998. This work highlights a promising potential for applications in harvesting hydrokinetic energy and self-powered sensors and systems.

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Triboelectric nanogenerator: from alternating current to direct current

Cited by 74 publications

References 106 publications

Recent Progress in Self-Powered Sensors Based on Triboelectric Nanogenerators

Recent Progress in Self-Powered Sensors Based on Triboelectric Nanogenerators

Flexible Film‐Discharge‐Switch Assisted Universal Power Management System for the Four Operation Modes of Triboelectric Nanogenerators

A Direct-Current Triboelectric Nanogenerator Energy Harvesting System Based on Water Electrification for Self-Powered Electronics

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