Hydrodynamic and Energy Capture Properties of a Cylindrical Triboelectric Nanogenerator for Ocean Buoy

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.

show abstract

“…Liu et al. [ 128 ] designed a TENG installed inside the ocean buoy, and the power density of TENG is 30 mW m −2 . Rodrigues et al.…”

Section: Solid–solid Interface Tengs For Blue Energy Harvestingmentioning

confidence: 99%

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

Fan

Guo

et al. 2021

Adv Elect Materials

View full text Add to dashboard Cite

show abstract

“…The increasing use of fossil fuels such as oil and gas is considered to be the primary cause of global climate change. − Thus, it is necessary to explore and invest in alternative clean energy sources, such as solar, − wind, − and tidal energy. − However, these energy sources are often difficult to harness and costly to harness. In 2012, Wang et al first reported a low-cost, small, and simple device known as triboelectric nanogenerator (TENG) .…”

Section: Introductionmentioning

confidence: 99%

Waterproof Triboelectric Nanogenerators Based on Ag Nanoparticle/Chitosan Composites for Transmitting Morse Code

Hu,

Wang,

Yang

et al. 2023

ACS Appl. Nano Mater.

View full text Add to dashboard Cite

Owing to their degradability, environmental friendliness, and low cost, natural polymers have been widely utilized in the fabrication of triboelectric nanogenerators (TENGs). Chitosan is a natural polymer containing long chains of n-acetylamino glucose. However, the low dielectric constant of pure chitosan films affects their electrical properties. Therefore, in this study, to improve their electrical output performance, the dielectric constant of the films was increased by the incorporation of conductive nanoparticles. Highly transparent Ag/Chitosan films were successfully constructed, and the output performance was improved by varying the concentration of Ag nanoparticles (100−200 nm). At a concentration of 6 wt %, the open-circuit voltage, short-circuit current, and transferred charge reached 74 V, 4.6 μA, and 23.8 nC, respectively, with a maximum output power of 83 μW. Besides, the fabricated friction-based nanogenerator (AC-TENG) lit 20 blue light-emitting diodes (LEDs) and successfully drove a commercial calculator, which verified its practical application potential. Finally, the AC-TENG was used to transmit Morse code, successfully sending the signals "HELP" and "SOS", which might open opportunities in the field of communication application.

show abstract

“…A clean and extensive source of energy needs to be identified to solve this problem. However, there are still major technical bottlenecks in harnessing mechanical energy from various natural environments, such as wind [1][2][3], tidal [4][5][6], and solar power [7][8][9]. In 2012, a new energy harvesting method called the triboelectric nanogenerator (TENG) was developed [10].…”

Section: Introductionmentioning

confidence: 99%

Eco-friendly triboelectric nanogenerator based on degradable rape straw powder for monitoring human movement

Wang,

Hu,

Yang

et al. 2023

Nanotechnology

View full text Add to dashboard Cite

Green energy from the surrounding environment has great potential for reducing environmental pollution and sustainable development. Triboelectric nanogenerators (TENGs) are of great interest as they can easily harvest mechanical energy from the environment. Here, we present a triboelectric nanogenerator (RS-TENG) based on rape straw (RS), which was developed from a film composed of waste rape straw and polyvinyl alcohol (PVA). Due to the high content of carbonyl, hydroxyl and amino acid functional groups in rape straw, the ability of RS/PVA to lose electrons is increased. The proposed RS-TENG device with a size of 6.25 cm2 exhibits Open circuit voltage (78 V), Short circuit current (5.3 μA) performance under uniform external stress at a frequency of 3.5 Hz and 10N in the cylinder motor. 104.5 μW was obtained with a load resistance of 25 MΩ. Results obtained from degradability tests revealed that the RS/PVA film was able to degrade over a period of 30 days. The RS-TENG produces a significantly high current signal under conditions of finger bending, elbow movements, and foot tapping. Practical tests of the RS-TENG have shown that it is a promising sensing device that will be widely used in the future.

show abstract

Hydrodynamic and Energy Capture Properties of a Cylindrical Triboelectric Nanogenerator for Ocean Buoy

Cited by 4 publications

References 43 publications

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

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

Waterproof Triboelectric Nanogenerators Based on Ag Nanoparticle/Chitosan Composites for Transmitting Morse Code

Eco-friendly triboelectric nanogenerator based on degradable rape straw powder for monitoring human movement

Contact Info

Product

Resources

About