Thermoelectric generator based on a bismuth-telluride alloy fabricated by addition of ethylene glycol

2014 ◽  
Vol 14 (12) ◽  
pp. 1788-1793 ◽  
Author(s):  
Kyung Kuk Jung ◽  
Jong Soo Ko
Keyword(s):  
Ethylene Glycol ◽  
Bismuth Telluride ◽  
Thermoelectric Generator

Electrodeposition of bismuth telluride thermoelectric films from a nonaqueous electrolyte using ethylene glycol

2012 ◽  
Vol 68 ◽  
pp. 9-17 ◽  
Author(s):  
Hai P. Nguyen ◽  
Minxian Wu ◽  
Jiale Su ◽  
Ruud J.M. Vullers ◽  
Philippe M. Vereecken ◽  
...  
Keyword(s):  
Ethylene Glycol ◽  
Bismuth Telluride ◽  
Nonaqueous Electrolyte

Fabrication Process of Antimony Telluride and Bismuth Telluride Micro Thermoelectric Generator

2015 ◽  
Vol 9 (6) ◽  
pp. 612-618
Author(s):  
Mizue Mizoshiri ◽  
◽  
Masashi Mikami ◽  
Kimihiro Ozaki ◽  
Keyword(s):  
Bismuth Telluride ◽  
Thermoelectric Generator ◽  
Fabrication Process ◽  
Thermoelectric Generators ◽  
Antimony Telluride ◽  
Semiconductor Fabrication ◽  
Micro Thermoelectric Generator ◽  
Key Techniques

This paper describes the process of fabricating micro thermoelectric generators (μ-TEGs) based on antimony telluride (Sb-Te) and bismuth telluride (Bi-Te). These materials have excellent thermoelectric (TE) conversion properties. The deposition and patterning processes for thermoelectric films are key techniques in the fabrication of μ-TEGs. However, it is difficult to form TE micropatterns using conventional semiconductor technologies because Sb-Te and Bi-Te are brittle and difficult to etch. Therefore, a semiconductor fabrication process is developed for TE film patterning. Here, various processes for depositing Sb-Te and Bi-Te TE films are described. Then, the combinations of the deposition and patterning techniques are reviewed. Finally, the generation properties of the μ-TEGs are summarized.

Flexible thermoelectric generators with inkjet-printed bismuth telluride nanowires and liquid metal contacts

Nanoscale ◽  
2019 ◽  
Vol 11 (12) ◽  
pp. 5222-5230 ◽  
Author(s):  
Bolin Chen ◽  
Matthew Kruse ◽  
Biao Xu ◽  
Ravi Tutika ◽  
Wei Zheng ◽  
...  
Keyword(s):  
Liquid Metal ◽  
Bismuth Telluride ◽  
Thermoelectric Generator ◽  
Thermoelectric Generators ◽  
Metal Contacts ◽  
Flexible Thermoelectric

A nanowire based flexible thermoelectric generator with liquid metal contacts is fabricated by inkjet and spray printing.

Thermoelectric Power Generation by Harvesting the Waste Heat From a Car Engine

2015 ◽  
Author(s):  
Jong K. Cha ◽  
Thomas Y. Lee ◽  
Yong X. Gan
Keyword(s):  
Energy Conversion ◽  
Bismuth Telluride ◽  
Heat Sink ◽  
Thermoelectric Generator ◽  
Waste Heat ◽  
Electrical Energy ◽  
High Energy ◽  
Coolant Temperature ◽  
Maximum Output ◽  
Maximum Voltage

Internal combustion (IC) engines typically have an efficiency of less than 35%. This is largely due to the fact that much of the energy dissipates into waste heat. However, the waste heat may be converted into electricity by using energy conversion modules made from bismuth telluride. In this work, it is demonstrated that electricity can be generated from waste heat due to the difference in temperatures. The thermal to electrical energy conversion is achieved by using a self-assembled thermoelectric generator (TEG). The TEG (thermoelectric generator) uses two different types of metallic compound semiconductors, known as n-typed and p-typed, to create voltage when the junctions are held at different temperatures. The work mechanism is based on the Seebeck effect. In this study, the TEGs are made from bismuth telluride (Bi-Te) with relatively high energy conversion efficiencies. In addition, it is readily available. The installation location of the TEG is studied. For testing purposes and convenience, the top of the radiator of a 1990 Mazda Miata car was chosen. The TEG and an aluminum finned heat sink were placed in order on the top of the radiator. Thermal paste was applied to both surfaces and secured with zip ties. A vent was cut on the hood of the car to promote airflow between the fins. Appropriate electrical wiring allowed the unit to output to a digital multi-meter which was located within the car for operator to take data. It is found from the measured results that 0.948 V is the maximum output and the average voltage is 0.751 V. The highest voltage came from driving mountain paths due to the heat sink and coolant temperature being higher than nominal. We estimate that placing an insulator between the heat sink and TEG would push the maximum voltage over 1.0 V. During the cool down phase, the TEG produced electricity continuously with a maximum voltage of 0.9 V right after engine cutoff. The voltage decreased to about 0.6 V within 40 minutes. It is found that the relationship between the temperature difference and output voltage is linear.

Thermoelectric generator electrical performance based on temperature of thermoelectric materials

2018 ◽  
Vol 7 (3.29) ◽  
pp. 189 ◽  
Author(s):  
S Parveen ◽  
S Victor Vedanayakam ◽  
R Padma Suvarna
Keyword(s):  
Bismuth Telluride ◽  
Thermoelectric Materials ◽  
Output Voltage ◽  
Thermoelectric Generator ◽  
Thermoelectric Module ◽  
Electrical Performance ◽  
Maximum Temperature ◽  
Maximum Efficiency ◽  
Output Current ◽  
Space Applications

In space applications, the radioisotope thermoelectric generators are being used for the power generation. The energy storage devices like fuel cells, solar cells cannot function in remote areas, in such cases the power generating systems can work successfully for generating electrical power in space missions. The efficiency of thermo electric generators is around 5% to 8% . Bismuth telluride has high electrical conductivity (1.1 x 105S.m /m2) and very low thermal conductivity (1.20 W/ m.K). A Thermoelectric generator has been built up consisting of a Bi2Te3 based on thermoelectric module. The main aim of this is when four thermoelectric modules are connected in series, the power and efficiency was calculated. The thermoelectric module used is TEP1-1264-1.5. This thermoelectric module is having a size of 40mmx40mm. The hot side maximum temperature was 1600C where the cold side temperature is at 400C. At load resistance, 15Ω the maximum efficiency calculated was 6.80%, at temperature of 1600C. The maximum power at this temperature was 15.01W, the output voltage is 16.5V, and the output current is 0.91A. The related and the corresponding graphs between efficiency, power, output voltage, output current was drawn at different temperatures. The efficiency of bismuth telluride, thermoelectric module is greater than other thermoelectric materials.  

scholarly journals Numerical simulation of segmented ratio in bismuth telluride and skutterudites for waste heat recovery

2021 ◽  
Vol 2120 (1) ◽  
pp. 012007
Author(s):  
K W Cheong ◽  
J H Lim
Keyword(s):  
Output Power ◽  
Bismuth Telluride ◽  
Heat Recovery ◽  
Output Voltage ◽  
Waste Heat Recovery ◽  
Thermoelectric Generator ◽  
Waste Heat ◽  
Thermoelectric Performance ◽  
Length Ratio ◽  
Thermoelectric Generators

Abstract The thermoelectric performance of the segmented annular thermoelectric generators with the bismuth telluride and skutterudites has been investigated. The effect of the length ratio of the hot-segment leg to total length leg on the thermoelectric performance of the segmented annular thermoelectric generators is analysed and discussed and the optimization design of the annular thermoelectric generator with bismuth telluride and skutterudites as the materials with high thermoelectric performance is obtained. The result of the thermoelectric performance with the manipulated variable of the increase of length ratio, the output power, output voltage and efficiency of the segmented annular thermoelectric generators increase at the beginning then decrease afterwards. Additionally, to compare with the single bismuth telluride and skutterudites annular thermoelectric generators, the output voltage, output power and the conversion efficiency of the segmented annular thermoelectric generators can be improved twice. Lastly, the thermoelectric performance of the segmented annular thermoelectric generators operating in the changes of the temperature. The result has proved that as the temperature increase, the thermoelectric performance of the annular thermoelectric generator will also increase. Hence, the acquired results may be given some useful applications of the bismuth telluride and skutterudites on the segmented annular thermoelectric generators for waste heat recovery.

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