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Bismuth telluride a thermoelectric materiall

What is bismuth telluride?

Bismuth telluride is a grey powder with the formula Bi2Te3. Bismuth telluride is a semiconductor material with good electrical conductivity but poor thermal conductivity. Although bismuth telluride is not dangerous, it can be fatal if taken in large quantities. The material allows electrons to move over its surface at room temperature without energy consumption, which could lead to a leap in the speed and efficiency of even computer chips. The result of a joint effort between the National Accelerator Laboratory at the Department of Energy's Stanford Linear Accelerator Center (SLAC) and scientists at Stanford's Institute for Materials and Energy Sciences (SIMES). In the online edition of Science Express on June 11, 2009, American physicist Yulin Chen et al. published a test report on the electronic properties of bismuth telluride.

 

Research and application of bismuth telluride thermoelectric materials

Thermoelectric material is a functional material that realizes the direct conversion of electric energy and heat energy based on the Seebeck Effect and Partier effect. Thermoelectric materials have become vital for forward-looking and strategic new energy technologies such as thermoelectric refrigeration and power generation. Bismuth telluride alloy, the thermoelectric material with the best performance near room temperature, has been widely used in aerospace, microelectronics, particularly power supply and other fields. Due to the low thermoelectric properties of bismuth telluride thermoelectric materials in the middle and low-temperature region of 200-300, the further expansion of its application is limited. Therefore, optimizing the thermoelectric properties of bismuth telluride thermoelectric materials in the standard and low-temperature parts is of great practical significance.

 

Effect of preparation technology on thermoelectric properties of P-type bismuth telluride alloy

P-type bismuth telluride thermoelectric materials were prepared by zonation, mechanical alloying, spark plasma sintering (SPS) and hot pressing. The thermoelectric properties, including electrical conductivity (σ), Seebeck coefficient (α) and thermal conductivity (κ), were measured in the temperature range of 300 — 500K, and the Effect of the preparation process on the thermoelectric properties was investigated. The results show that, compared with the exact composition of ZT, the properties of the prepared bulk materials are improved to different degrees. The zone-fusion method combined with SPS technology obtained the bulk material with the best thermoelectric properties, and its ZT value reached 1.15.

 

Price of bismuth telluride

Bismuth telluride particle size and purity will affect the product's Price, and the purchase volume can also affect the cost of Bismuth telluride. A large amount of large amount will be lower. The Price of bismuth telluride is on our company's official website.

 

Bismuth telluride supplier

Mis-Asia is a reliable and high-quality global chemical material supplier and manufacturer. It has over 12 years of experience providing ultra-high quality chemicals and nanotechnology materials, including bismuth telluride, nitride powder, graphite powder, sulfide powder, and 3D printing powder. If you are looking for high-quality and cost-effective bismuth telluride, you are welcome to contact us or inquire any time.

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