Friday, August 8, 2025
Science
No Result
View All Result
  • Login
  • HOME
  • SCIENCE NEWS
  • CONTACT US
  • HOME
  • SCIENCE NEWS
  • CONTACT US
No Result
View All Result
Scienmag
No Result
View All Result
Home Science News Technology and Engineering

Ion thermoelectric conversion devices for near room temperature

April 22, 2024
in Technology and Engineering
Reading Time: 4 mins read
0
The ionic thermoelectric generators based on redox electrodes to enhance energy density and power density.
66
SHARES
596
VIEWS
Share on FacebookShare on Twitter
ADVERTISEMENT
ADVERTISEMENT

They published their work on Apr. 10 in Energy Material Advances.

The ionic thermoelectric generators based on redox electrodes to enhance energy density and power density.

Credit: Schematic diagram of ionic thermoelectric conversion device prepared by Institute of Chemical Engineering, Guangdong Academy of Sciences, China

They published their work on Apr. 10 in Energy Material Advances.

 

The electrode sheet of the thermoelectric device consists of ionic hydrogel, which is sandwiched between the electrodes to form, and the Prussian blue on the electrode undergoes a redox reaction to improve the energy density and power density of the ionic thermoelectric generator.

 

Prof. Zeng Wei of the Institute of Chemical Engineering, Guangdong Academy of Sciences, said that at the beginning, the group mainly carried out research based on the thermal diffusion effect and published a series of research results. In spite of this, their results never realized the expected effect, and the prospect of practical application was not optimistic.

 

Later, they tried to make a further enhancement on the basis of the thermal current effect, that is, to incorporate the redox reaction of the electrode. The reason for this is that the thermal current effect is redox in the electrolyte, so the gain and loss of electrons mainly occurs in the solution, and the electrons in the electrolyte to migrate to the electrode are not only more difficult, but also need to travel a distance, which will lead to both a lower conversion efficiency and ineffective loss of electrons.

 

If redox can be achieved directly at the electrodes, that is, if ions are allowed to reach the electrodes and then undergo redox reactions in a thermally induced manner, rather than being driven by an electric current, the distance traveled by the electrons can be very well reduced, resulting in high thermoelectric conversion efficiencies and a significant increase in the time that the thermoelectric device can supply power to the outside world.

 

“In this work the instantaneous power density reached 3.7 mW/m2K2. In addition, the output energy density was 194 J/m2 for 2 hours at a temperature gradient of 10 K, and the Carnot relative efficiency was as high as 0.12% at a hot-side temperature (TH) of 30°C and a cold-side temperature (TC) of 20°C,” Zeng said.

Therefore, in terms of applications, the device is already capable of continuously powering electronic devices such as wearable electronics and sensors. In addition, the team would like to further broaden the applications, such as using the device for solar photo-thermal power systems and heat recovery outside building walls.

 

Specifically, the temperature at which sunlight hits a solar panel is usually between 60 and 80 degrees Celsius, which is a few tens of degrees Celsius difference from the real ambient temperature. But if the currently developed thermoelectric device is attached to the back of the solar panel, it can further convert the wasted heat energy into electricity, thus increasing the efficiency of solar energy output. And by using the devices for heat recovery outside the building walls, the purpose of powering the building itself can be realized.

 

Talking about the follow-up plan of this research, Zeng Wei said that at present, the main use of polyaniline to modify the electrode, its redox characteristics and capacity is relatively limited. Therefore, the next step is to find more materials that correspond to the thermal potential under study to further increase the density of the redox electrodes and the energy output to the outside world. At the same time, the team also plans to improve the specific capacitance of the electrodes and increase the specific surface area to better increase the capacity ratio of the electrodes. In addition, they will continue to optimize the structural design of the hydrogel itself and broaden the choice of materials.

 

Other contributors include Xia Yang, Dongyu Zhu, Guangdong University of Technology; Fei Wang, Chen Wu and Jianchao Jia, Institute of Chemical Engineering, Guangdong Academy of Sciences; and Jin Liu, Department of Mechanical and Aerospace Engineering, Hong Kong University of Science and Technology.

 

 

   ###

Reference
Authors: XIA YANG, JIN LIU, JIANCHAO JIA, CHEN WU, FEI WANG, DONG YU ZHU , AND WEI ZENG
Title of original paper: Energy Density in Ionic Thermoelectric Generators by Prussian Blue Electrodes
Journal: Energy Material Advances
DOI: 10.34133/energymatadv.0089
Affiliations: 1The  Center  of  Flexible  Sensing  Technology,  Institute  of  Chemical  Engineering,  Guangdong  Academy  of  Sciences, Guangzhou 510665, China. 2School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou 510006, China. 3Department of Mechanical and Aerospace Engineering, The Hong Kong University of Science and Technology, Kowloon Clear Water Bay, Hong Kong, China.
About Dr. Zeng:

Wei Zeng is Professor of chemistry and physics of polymers, Institute of Chemical Engineering, Guangdong Academy of Sciences. He obtained his Ph.D. in Polymer chemistry and physics from Sun Yat- Sen University in 2007 and worked as research fellow in Institute of Textiles and Clothing, The Hong Kong Polytechnic University until 2019. His research focused on the development and applications of nano generators and flexible wearable electronic devices.



Journal

Energy Material Advances

DOI

10.34133/energymatadv.0089

Method of Research

Experimental study

Subject of Research

Not applicable

Article Title

Energy Density in Ionic Thermoelectric Generators by Prussian Blue Electrodes

Article Publication Date

10-Apr-2024

COI Statement

The authors declare that they have no competing interests.

Share26Tweet17
Previous Post

In psychedelic therapy, clinician-patient bond may matter most

Next Post

mtDNA copy number contributes to growth diversity in allopolyploid fish

Related Posts

blank
Technology and Engineering

SFU’s Indoor Berry Research Expands and Diversifies Thanks to Homegrown Innovation Challenge Support

August 8, 2025
blank
Technology and Engineering

Zn3P2@C Nanosheets: Breakthrough Sodium-Ion Battery Anodes

August 8, 2025
blank
Technology and Engineering

Engineering DNA Nanostructures for the Development of Flexible and Regulated Biomolecular Condensates

August 8, 2025
blank
Technology and Engineering

Wildfire Collaborative Addresses Community Air Quality Concerns

August 8, 2025
blank
Technology and Engineering

SNU Researchers Unveil Innovative Wearable Blood Pressure Monitor Designed for Real-Time Continuous Monitoring, Attachment Similar to a Bandage

August 8, 2025
blank
Technology and Engineering

Flexible High-Performance Circularly Polarized Light Detectors

August 8, 2025
Next Post
mtDNA copy number and the relationship with body weight

mtDNA copy number contributes to growth diversity in allopolyploid fish

  • Mothers who receive childcare support from maternal grandparents show more parental warmth, finds NTU Singapore study

    Mothers who receive childcare support from maternal grandparents show more parental warmth, finds NTU Singapore study

    27531 shares
    Share 11009 Tweet 6881
  • University of Seville Breaks 120-Year-Old Mystery, Revises a Key Einstein Concept

    943 shares
    Share 377 Tweet 236
  • Bee body mass, pathogens and local climate influence heat tolerance

    641 shares
    Share 256 Tweet 160
  • Researchers record first-ever images and data of a shark experiencing a boat strike

    507 shares
    Share 203 Tweet 127
  • Warm seawater speeding up melting of ‘Doomsday Glacier,’ scientists warn

    310 shares
    Share 124 Tweet 78
Science

Embark on a thrilling journey of discovery with Scienmag.com—your ultimate source for cutting-edge breakthroughs. Immerse yourself in a world where curiosity knows no limits and tomorrow’s possibilities become today’s reality!

RECENT NEWS

  • Anthelmintic Impact and Ascaris Infection in Pakistani Children
  • Rare Case: Tracheal Bronchus Complicates Pulmonary Agenesis
  • Microbial Resilience in Arid Soils Fueled by Stochastic Dynamics
  • Studying Bamboo Coral: A Key Mediterranean Ecosystem Indicator

Categories

  • Agriculture
  • Anthropology
  • Archaeology
  • Athmospheric
  • Biology
  • Bussines
  • Cancer
  • Chemistry
  • Climate
  • Earth Science
  • Marine
  • Mathematics
  • Medicine
  • Pediatry
  • Policy
  • Psychology & Psychiatry
  • Science Education
  • Social Science
  • Space
  • Technology and Engineering

Subscribe to Blog via Email

Enter your email address to subscribe to this blog and receive notifications of new posts by email.

Join 4,860 other subscribers

© 2025 Scienmag - Science Magazine

Welcome Back!

Login to your account below

Forgotten Password?

Retrieve your password

Please enter your username or email address to reset your password.

Log In
No Result
View All Result
  • HOME
  • SCIENCE NEWS
  • CONTACT US

© 2025 Scienmag - Science Magazine

Discover more from Science

Subscribe now to keep reading and get access to the full archive.

Continue reading