Nanotechnology Now

Our NanoNews Digest Sponsors
Heifer International



Home > Press > Improving the efficiency of nanogenerators that harvest static electricity

This diagram shows the schematic of the constant inherent capacitance triboelectric nanogenerator, the working mechanism of the device with two surfaces rubbing against each other, and the output powers of the device.

CREDIT
Nano Research
This diagram shows the schematic of the constant inherent capacitance triboelectric nanogenerator, the working mechanism of the device with two surfaces rubbing against each other, and the output powers of the device. CREDIT Nano Research

Abstract:
Triboelectric energy is the scientific term for static electricity, or the energy that is created when two surfaces rub against each other. Electrons are exchanged between the two surfaces, charging one of the surfaces after they are separated. For example, if a balloon is rubbed against hair, it will cling to a wall. Or if clothes in the dryer rub together, you may see sparks as you pull them apart. Triboelectric generators are mechanical energy harvesters that can generate electricity from two surfaces rubbing against each other. These tiny power generators can be used to power wearable electronic devices, sensors, and other advanced technologies.

Improving the efficiency of nanogenerators that harvest static electricity

Tsinghua, China | Posted on October 28th, 2022

In a new paper, researchers theorize a new way to design triboelectric nanogenerators with a constant inherent capacitance. Currently, these nanogenerators use a time-dependent inherent capacitance, but research suggests that this change could increase their energy conversion efficiency.



The paper was published on October 26 in Nano Research.



“Triboelectric nanogenerators can provide a feasible way to convert mechanical energy into electricity,” said Youfan Hu, a professor at the School of Electronics at Peking University in China. “With improved efficiency and sensitivity, even very weak mechanical energy ‘hidden’ in the environment can be caught and utilized.”



Capacitance is the ability of the nanogenerator’s capacitor to store electric charges. To prove that the constant inherent capacitance could work, researchers first developed a mathematical model to analyze the potential of the triboelectric nanogenerators with constant inherent capacitance. Then the researchers fabricated a version of the nanogenerator in order to test its efficiency and compare it to existing time-dependent inherent capacitance.



The capacitors were charged using three different styles of power conditioning circuits to test the performance of the two different triboelectric nanogenerators. They found that both triboelectric nanogenerators worked better on a full wave power circuit, but that the constant inherent capacitance triboelectric nanogenerators were able to store approximately two times the charge as the time-dependent inherent capacitance triboelectric nanogenerators. This gives the constant inherent capacitance triboelectric nanogenerators a big advantage. They also found that this form of nanogenerator could charge very quickly.



“The results of our study show that triboelectric nanogenerators with a constant capacitance design are more efficient for harvesting mechanical energy from the environment and delivering the load,” said Hu.



Finally, to prove how this type of triboelectric nanogenerator could be used in a real-world application, researchers create an anemometer based on their technology. An anemometer measures wind speed and direction. When the kinetic energy of the wind moved the cups on the anemometer, the triboelectric nanogenerator was able to turn that information into electric signal , which could be processed as the measurements of the wind speed. The anemometer was able to process the information in real-time and send it to the researchers.



This style of triboelectric nanogenerator is also easy to manufacture and easy to design, so looking ahead, researchers will be studying how to make the device even more practical so it can be applied to a wide range of devices. They will also study how to improve its efficiency even more. “The next step is to miniaturize the device and optimize the power management circuits. Ultimately, triboelectric nanogenerators will be able to serve in an integrated electronic system with a small footprint,” said Hu.



Other contributors include Lanyue Gan, Xijun Jiang, and Yuxuan Liu of the Hunan Institute of Advanced Sensing and Information Technology at Xiangtan University; Fan Xia of the Key Laboratory for the Physics and Chemistry of Nanodevices at Peking University; Panpan Zhang at the School of Mechanical Engineering at Shanghai Jiao Tong University; and Simiao Niu at the Department of Biomedical Engineering at Rutgers University.



The National Natural Science Foundation of China and the High-performance Computing Platform of Peking University supported this research.

####

About Tsinghua University Press
Established in 1980, belonging to Tsinghua University, Tsinghua University Press (TUP) is a leading comprehensive higher education and professional publisher in China. Committed to building a top-level global cultural brand, after 41 years of development, TUP has established an outstanding managerial system and enterprise structure, and delivered multimedia and multi-dimensional publications covering books, audio, video, electronic products, journals and digital publications. In addition, TUP actively carries out its strategic transformation from educational publishing to content development and service for teaching & learning and was named First-class National Publisher for achieving remarkable results.

About Nano Research



Nano Research is a peer-reviewed, international and interdisciplinary research journal, publishes all aspects of nano science and technology, featured in rapid review and fast publishing, sponsored by Tsinghua University and the Chinese Chemical Society. It offers readers an attractive mix of authoritative and comprehensive reviews and original cutting-edge research papers. After 15 years of development, it has become one of the most influential academic journals in the nano field. In 2022 InCites Journal Citation Reports, Nano Research has an Impact Factor of 10.269 (9.136, 5 years), the total cites reached 29620, ranking first in China's international academic journals, and the number of highly cited papers reached 120, ranked among the top 2.8% of over 9000 academic journals.

For more information, please click here

Contacts:
Yao Meng
Tsinghua University Press

Office: 86-108-347-0574

Copyright © Tsinghua University Press

If you have a comment, please Contact us.

Issuers of news releases, not 7th Wave, Inc. or Nanotechnology Now, are solely responsible for the accuracy of the content.

Bookmark:
Delicious Digg Newsvine Google Yahoo Reddit Magnoliacom Furl Facebook

Related Links

ARTICLE TITLE

Related News Press

News and information

Stability of perovskite solar cells reaches next milestone January 27th, 2023

Qubits on strong stimulants: Researchers find ways to improve the storage time of quantum information in a spin rich material January 27th, 2023

UCF researcher receives Samsung International Global Research Outreach Award: The award from the multinational electronics corporation will fund the development of infrared night vision and thermal sensing camera technology for cell phones and consumer electronics January 27th, 2023

Temperature-sensing building material changes color to save energy January 27th, 2023

Possible Futures

One of the causes of aggressive liver cancer discovered: a 'molecular staple' that helps repair broken: DNA Researchers describe a new DNA repair mechanism that hinders cancer treatment January 27th, 2023

Stability of perovskite solar cells reaches next milestone January 27th, 2023

Danish quantum physicists make nanoscopic advance of colossal significance January 27th, 2023

UC Irvine researchers decipher atomic-scale imperfections in lithium-ion batteries: Team used super high-resolution microscopy enhanced by deep machine learning January 27th, 2023

Discoveries

One of the causes of aggressive liver cancer discovered: a 'molecular staple' that helps repair broken: DNA Researchers describe a new DNA repair mechanism that hinders cancer treatment January 27th, 2023

Stability of perovskite solar cells reaches next milestone January 27th, 2023

Qubits on strong stimulants: Researchers find ways to improve the storage time of quantum information in a spin rich material January 27th, 2023

Temperature-sensing building material changes color to save energy January 27th, 2023

Announcements

UCF researcher receives Samsung International Global Research Outreach Award: The award from the multinational electronics corporation will fund the development of infrared night vision and thermal sensing camera technology for cell phones and consumer electronics January 27th, 2023

Temperature-sensing building material changes color to save energy January 27th, 2023

Quantum sensors see Weyl photocurrents flow: Boston College-led team develops new quantum sensor technique to image and understand the origin of photocurrent flow in Weyl semimetals January 27th, 2023

Department of Energy announces $9.1 million for research on quantum information science and nuclear physics: Projects span the development of quantum computing, algorithms, simulators, superconducting qubits, and quantum sensors for advancing nuclear physics January 27th, 2023

Interviews/Book Reviews/Essays/Reports/Podcasts/Journals/White papers/Posters

Qubits on strong stimulants: Researchers find ways to improve the storage time of quantum information in a spin rich material January 27th, 2023

Temperature-sensing building material changes color to save energy January 27th, 2023

Quantum sensors see Weyl photocurrents flow: Boston College-led team develops new quantum sensor technique to image and understand the origin of photocurrent flow in Weyl semimetals January 27th, 2023

Danish quantum physicists make nanoscopic advance of colossal significance January 27th, 2023

Energy

Stability of perovskite solar cells reaches next milestone January 27th, 2023

Temperature-sensing building material changes color to save energy January 27th, 2023

Quantum sensors see Weyl photocurrents flow: Boston College-led team develops new quantum sensor technique to image and understand the origin of photocurrent flow in Weyl semimetals January 27th, 2023

Polymer p-doping improves perovskite solar cell stability January 20th, 2023

Battery Technology/Capacitors/Generators/Piezoelectrics/Thermoelectrics/Energy storage

UC Irvine researchers decipher atomic-scale imperfections in lithium-ion batteries: Team used super high-resolution microscopy enhanced by deep machine learning January 27th, 2023

Correlated rattling atomic chains reduce thermal conductivity of materials January 20th, 2023

Lithium-sulfur batteries are one step closer to powering the future January 6th, 2023

Tin selenide nanosheets enables to develop wearable tracking devices December 9th, 2022

NanoNews-Digest
The latest news from around the world, FREE




  Premium Products
NanoNews-Custom
Only the news you want to read!
 Learn More
NanoStrategies
Full-service, expert consulting
 Learn More











ASP
Nanotechnology Now Featured Books




NNN

The Hunger Project