High Temperature Thermoelectric Materials for Waste Heat Regeneration

2013 ◽  
Author(s):  
Horacio Nochetto ◽  
Patrick Taylor ◽  
Jay R. Maddux
Keyword(s):  
High Temperature ◽  
Thermoelectric Materials ◽  
Waste Heat ◽  
Heat Regeneration

Making Thermoelectric Materials SnxGa1−xNx Alloys by Magnetron Sputtering Technology

2015 ◽  
Vol 1120-1121 ◽  
pp. 490-492
Author(s):  
Xing Long Guo
Keyword(s):  
Thermal Conductivity ◽  
High Temperature ◽  
Magnetron Sputtering ◽  
Thermoelectric Materials ◽  
Power Plants ◽  
Waste Heat ◽  
Heat Pumps ◽  
High Mechanical Strength ◽  
Power Generators ◽  
Device Operation

Thermoelectric materials are of interest for applications as heat pumps and power generators. Thermoelectric properties of SnxGa1−xN alloys have been investigated. It was found that as Sn concentration increases, the thermal conductivity decreases and power factor increases, which leads to an increase in the TE figure of ZT. The valuge of ZT was found to be 0.07 at 300 K for Sn0.38Ga0.64N alloy. The results indicate that SnGaN alloys could be potentially important TE materials for many applications, especially for prolonged TE device operation at high temperatures, such as for recovery of waste heat from automobile, aircrafts, and power plants due to their superior physical properties, including the ability of operating at high temperature/high power conditions, high mechanical strength and stability, and radiation hardness.

scholarly journals Computationally Modelling the Use of Nanotechnology to Enhance the Performance of Thermoelectric Materials

Energies ◽  
2020 ◽  
Vol 13 (19) ◽  
pp. 5096
Author(s):  
Peter Spriggs ◽  
Qing Wang
Keyword(s):  
High Temperature ◽  
Thermoelectric Materials ◽  
Phonon Scattering ◽  
Waste Heat ◽  
Global Climate ◽  
Computational Simulation ◽  
Electrical Energy ◽  
Maximum Efficiency ◽  
Temperature Range ◽  
Band Engineering

The increased focus on global climate change has meant that the thermoelectric market has received considerably more attention. There are many processes producing large amounts of waste heat that can be utilised to generate electrical energy. Thermoelectric devices have long suffered with low efficiencies, but this can be addressed in principle by improving the performance of the thermoelectric materials these devices are manufactured with. This paper investigates the thermoelectric performance of market standard thermoelectric materials before analysing how this performance can be improved through the adoption of various nanotechnology techniques. This analysis is carried out through the computational simulation of the materials over low-, mid- and high-temperature ranges. In the low-temperature range, through the use of nanopores and full frequency phonon scattering, Mg0.97Zn0.03Ag0.9Sb0.95 performed best with a ZT value of 1.45 at 433 K. Across the mid-temperature range a potentially industry leading ZT value of 2.08 was reached by AgSbTe1.85Se0.15. This was carried out by simulating the effect of band engineering and the introduction of dense stacking faults due to the addition of Se into AgSbTe2. AgSbTe1.85Se0.15 cannot be implemented in devices operating above 673 K because it degrades too quickly. Therefore, for the top 200 K of the mid-temperature range a PbBi0.002Te–15% Ag2Te nanocomposite performed best with a maximum ZT of 2.04 at 753 K and maximum efficiency of 23.27 at 813 K. In the high-temperature range, through the doping of hafnium (Hf) the nanostructured FeNb0.88Hf0.12Sb recorded the highest ZT value of 1.49 at 1273 K. This was closely followed by Fe1.05Nb0.75Ti0.25Sb, which recorded a ZT value of 1.31 at 1133 K. This makes Fe1.05Nb0.75Ti0.25Sb an attractive substitute for FeNb0.88Hf0.12Sb due to the much lower cost and far greater abundance of titanium (Ti) compared with hafnium.

A review on nanostructures of high-temperature thermoelectric materials for waste heat recovery

2016 ◽  
Vol 64 ◽  
pp. 635-659 ◽  
Author(s):  
Fitriani ◽  
R. Ovik ◽  
B.D. Long ◽  
M.C. Barma ◽  
M. Riaz ◽  
...  
Keyword(s):  
High Temperature ◽  
Thermoelectric Materials ◽  
Heat Recovery ◽  
Waste Heat Recovery ◽  
Waste Heat

SnSe, the rising star thermoelectric material: a new paradigm in atomic blocks, building intriguing physical properties

2021 ◽  
Author(s):  
Lin Xie ◽  
Dongsheng He ◽  
Jiaqing He
Keyword(s):  
Physical Properties ◽  
Energy Conversion ◽  
Thermoelectric Material ◽  
Thermoelectric Materials ◽  
Waste Heat ◽  
New Paradigm ◽  
Direct Energy Conversion ◽  
Structures And Properties ◽  
Direct Energy

Thermoelectric materials, which enable direct energy conversion between waste heat and electricity, are witnessing exciting developments due to innovative breakthroughs both in materials and the synergistic optimization of structures and properties.

Effect of Electron-Phonon Coupling on Transport Properties of Monolayers of ZrS2, BiI3 and PbI2: A thermoelectric Perspective

2021 ◽  
Author(s):  
Gautam Sharma ◽  
Vineet Kumar Pandey ◽  
Shouvik Datta ◽  
Prasenjit Ghosh
Keyword(s):  
Relaxation Time ◽  
Band Structure ◽  
Transport Properties ◽  
Thermoelectric Properties ◽  
Thermoelectric Materials ◽  
Waste Heat ◽  
Transport Coefficients ◽  
Electrical Energy ◽  
Phonon Coupling ◽  
Electron Phonon Coupling

Thermoelectric materials are used for conversion of waste heat to electrical energy. The transport coefficients that determine their thermoelectric properties depend on the band structure and the relaxation time of...

Sign in / Sign up

Export Citation Format

Share Document