Network Topology Optimization of Triboelectric Nanogenerators for Effectively Harvesting Ocean Wave Energy

Liu, Wenbo; Xu, Liang; Liu, Guoxu; Yang, Hang; Bu, Tianzhao; Fu, Xianpeng; Xu, Shaohang; Fang, Chunlong; Zhang, Chi

doi:10.1016/j.isci.2020.101848

Cited by 30 publications

(22 citation statements)

References 66 publications

(63 reference statements)

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“…As the inner oscillator reaches its highest or lowest position and creates a voltage owing to the charge separation, switches are closed and a pulse current driven by the voltage appears in the external circuit (Figure 10g,h). Such switch circuit results in swift charge transfer that no longer depends on mechanical contact-separation speed of electrodes, rising the peak current to 1.77 A and the instantaneous power to 313 W, at a load of 100 Ω (Figure 10i), which further enhances previous experimental results by Cheng et al [74]. Apart from that, the possible energy output per cycle is also increased, the principle of which was thoroughly discussed by Zi et al [21].…”

Section: Power Managementsupporting

confidence: 68%

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Advances of High-Performance Triboelectric Nanogenerators for Blue Energy Harvesting

Wang

2021

Nanoenergy Advances

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The ocean is an enormous source of blue energy, whose exploitation is greatly beneficial for dealing with energy challenges for human beings. As a new approach for harvesting ocean blue energy, triboelectric nanogenerators (TENGs) show superiorities in many aspects over traditional technologies. Here, recent advances of TENGs for harvesting blue energy are reviewed, mainly focusing on advanced designs of TENG units for enhancing the performance, through which the response of the TENG unit to slow water agitations and the output power of the device are largely improved. Networking strategy and power management are also briefly discussed. As a promising clean energy technology, blue energy harvesting based on TENGs is expected to make great contributions for achieving carbon neutrality and developing self-powered marine systems.

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Section: Power Managementsupporting

confidence: 68%

“…Liu et al put forward a study concerning four types of electrical networking topology [74]. The effect of wire resistance and output phase asynchrony of different units on the network output were analyzed and concluded to be crucial (Figure 9f).…”

Section: Networking Designsmentioning

confidence: 99%

Advances of High-Performance Triboelectric Nanogenerators for Blue Energy Harvesting

Wang

2021

Nanoenergy Advances

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“…Liu et al. [ 62 ] designed four topological structures as shown in Figure a. First, adjacent TENGs were directly connected, and all units were connected in parallel.…”

Section: Solid–solid Interface Tengs For Blue Energy Harvestingmentioning

confidence: 99%

“…In the second section, the basic working principle of TENGs is introduced, and the structure of solid‐solid interface TENG is classified in detail in section 3, including sphere structures, [ 42–46 ] bionic structures, [ 8,9,47–51 ] hybrid structures [ 52–57 ] and networks. [ 58–62 ] In the next section, the advantages of solid–liquid interface TENGs in the marine application are presented, such as lightweight, flexible configuration, [ 63–66 ] corrosion resistance and free from ambient humidity. [ 34,67,68 ] In Section 5, the current technologies to improve the performance of TENGs are introduced in detail, including material surface modification, [ 49,69–72 ] ion implantation, [ 47,58,73,74 ] and chemical doping.…”

Section: Introductionmentioning

confidence: 99%

Recent Advances towards Ocean Energy Harvesting and Self‐Powered Applications Based on Triboelectric Nanogenerators

Fan

Guo

et al. 2021

Adv Elect Materials

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Ocean contain abundant clean energies including tidal and wave, but such energies are known for low frequency and large excitation amplitude, posing considerable challenges for high‐efficiency energy conversion. As an emerging technology, triboelectric nanogenerators (TENGs) have been widely used in energy harvesting and novel sensor design due to their high sensitivity and flexible structure. Meanwhile, they show great advantages in the low‐frequency environment (<5 Hz), and display great potential for deployment in remote ocean waters, and construction of large‐scale TENG networks. In this review, firstly, the working principle of TENGs and various configurations developed for the marine environment are introduced, which mainly include solid–solid and solid–liquid interfaces. Then, from the viewpoint of power improvement, authors are most concerned about the modification methods of materials such as surface modification, electron injection, and chemical doping. Meanwhile, improved technologies for energy harvesters in marine environment are discussed in detail, such as improving the hydrophobicity and degradation of materials, studying the self‐healing ability of materials, and designing power management circuits. Finally, the current challenges are summarized, and research trends are given from both short‐term and long‐term perspectives.

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“…Besides developing new energy storage technologies, a self-powered whisker with high sensitivity could be useful for robot motion perception. Motivated by these problems, TENG coupled with triboelectrification and electrostatic induction has been developed as an electromechanical energy conversion technology; such a device exhibits potential applications in energy harvesting and self-powered mechanical sensing [22][23][24][25][26][27][28]. Self-powered triboelectric sensors have shown responses to environmental stimulation without requiring an energy source [29,30], ultrahigh sensitivity to vocal intonations [31,32], energy harvesting from water waves [24], acceleration perception [25], and human motion in real time [33][34][35].…”

Section: Introductionmentioning

confidence: 99%

A Triboelectric-Based Artificial Whisker for Reactive Obstacle Avoidance and Local Mapping

Wang

et al. 2021

Research

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Since designing efficient tactile sensors for autonomous robots is still a challenge, this paper proposes a perceptual system based on a bioinspired triboelectric whisker sensor (TWS) that is aimed at reactive obstacle avoidance and local mapping in unknown environments. The proposed TWS is based on a triboelectric nanogenerator (TENG) and mimics the structure of rat whisker follicles. It operates to generate an output voltage via triboelectrification and electrostatic induction between the PTFE pellet and copper films (0.3 mm thickness), where a forced whisker shaft displaces a PTFE pellet (10 mm diameter). With the help of a biologically inspired structural design, the artificial whisker sensor can sense the contact position and approximate the external stimulation area, particularly in a dark environment. To highlight this sensor’s applicability and scalability, we demonstrate different functions, such as controlling LED lights, reactive obstacle avoidance, and local mapping of autonomous surface vehicles. The results show that the proposed TWS can be used as a tactile sensor for reactive obstacle avoidance and local mapping in robotics.

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Network Topology Optimization of Triboelectric Nanogenerators for Effectively Harvesting Ocean Wave Energy

Cited by 30 publications

References 66 publications

Advances of High-Performance Triboelectric Nanogenerators for Blue Energy Harvesting

Advances of High-Performance Triboelectric Nanogenerators for Blue Energy Harvesting

Recent Advances towards Ocean Energy Harvesting and Self‐Powered Applications Based on Triboelectric Nanogenerators

A Triboelectric-Based Artificial Whisker for Reactive Obstacle Avoidance and Local Mapping

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