New study unveils thermoelectric ink that turns car exhaust pipes into
power generators

Date:
August 26, 2021
Source:
Ulsan National Institute of Science and Technology(UNIST)
Summary:
A recent study has resulted in the development of a thermoelectric
technology method to produce power-generating tubes using 3D
printing techniques.



FULL STORY ==========================================================================
A joint research team, affiliated with UNIST has announced that they
have successfully developed a thermoelectric technology to produce power-generating tubes using 3D printing techniques. Researchers
found that the tube-shaped device is more effective than conventional
devices. This breakthrough has been jointly led by Professor Han Gi Chae
and Professor Jae Sung Son from the Department of Materials Science
and Engineering, and Professor Sung Youb Kim from the Department of
Mechanical Engineering at UNIST.


========================================================================== "Through this research, we will be able to effectively convert heat
generated by factory chimneys, the most common type of waste heat source,
into electricity," said Professor Son. He said this is because the
existing thermoelectric devices were in rectangular parallelepiped shapes.

In this study, researchers created the thermoelectric tube using a 3D
printed ink made of lead (Pb) and tellurium (Te). Metal particles were
mixed inside a glycerol solvent to provide viscoelasticity, a status that exhibits both viscous and elastic characteristics. The tube has a high thermoelectric performance at temperatures between 400 and 800 degrees
Celsius, which is the temperature range of a car's exhaust gases. The
tube shape makes it more effective in collecting heat than a conventional cuboid type.

"If we use 3D printing technology in the production of thermoelectric materials, we will be able to overcome limits of conventional materials,"
said Professor Chae. "The new technology for providing viscoelastic characteristics to 3D printed materials will be used in various other
sectors." Their work has been featured on the front cover of Advanced
Energy Materials, which was made available online in April 2021 ahead of
final publication in May 2021. This study has been jointly participated
by Professor Sangjoon Ahn, Dr.

Jaehyung Hong, Professor Ji Eun Lee from Chonnam National University,
and Jeongin Jang from Korea Electrotechnology Research Institute.

========================================================================== Story Source: Materials provided by Ulsan_National_Institute_of_Science_and_Technology (UNIST). Original
written by JooHyeon Heo. Note: Content may be edited for style and length.


========================================================================== Journal Reference:
1. Jungsoo Lee, Seungjun Choo, Hyejin Ju, Jaehyung Hong, Seong
Eun Yang,
Fredrick Kim, Da Hwi Gu, Jeongin Jang, Gyeonghun Kim,
Sangjoon Ahn, Ji Eun Lee, Sung Youb Kim, Han Gi Chae, Jae Sung
Son. Doping‐Induced Viscoelasticity in PbTe Thermoelectric
Inks for 3D Printing of Power‐Generating Tubes. Advanced
Energy Materials, 2021; 11 (20): 2100190 DOI: 10.1002/aenm.202100190 ==========================================================================

Link to news story: https://www.sciencedaily.com/releases/2021/08/210826095041.htm

--- up 15 weeks, 6 days, 22 hours, 45 minutes
* Origin: -=> Castle Rock BBS <=- Now Husky HPT Powered! (1:317/3)