Bismuth Telluride Selenium Alloy Piece Powder Purity 99.99% can be customized Bi-Te-Se alloy
Bismuth Telluride Selenium Alloy, commonly known as BTS or Bi₂Te₃-xSex alloy, is a thermoelectric material composed primarily of bismuth telluride (Bi₂Te₃) with selenium (Se) substituting for a portion of the tellurium atoms.
Bismuth Telluride Selenium Alloy, commonly known as BTS or Bi₂Te₃-xSex alloy, is a thermoelectric material composed primarily of bismuth telluride (Bi₂Te₃) with selenium (Se) substituting for a portion of the tellurium atoms. This ternary alloy is part of the chalcogenide family and is widely recognized for its exceptional thermoelectric properties, making it a key component in various energy conversion and cooling applications.
Features of Bismuth Telluride Selenium Alloy
Enhanced Thermoelectric Performance: By introducing selenium into bismuth telluride, the alloy can exhibit improved thermoelectric figure of merit (ZT), which is a measure of efficiency in converting heat to electricity. This enhancement arises from optimized electrical conductivity and reduced thermal conductivity.
Adjustable Band Gap: Varying the selenium content (x in Bi₂Te₃-xSex) tunes the band gap of the material, affecting its electronic properties and thus optimizing it for specific temperature ranges or device requirements.
Stable Thermoelectric Properties: The alloy maintains its thermoelectric performance over a wide range of temperatures, making it suitable for operation in varying environmental conditions.
Environmental Stability: Unlike some other thermoelectric materials, BTS alloys are relatively stable in air and exhibit good chemical stability, enhancing their longevity in practical applications.
Ease of Processing: Despite containing heavy elements, BTS alloys can be readily synthesized and shaped into thin films, pellets, or other forms necessary for device integration.
Parameters of Tellurium Antimony Germanium Alloy
Certificate of Analysis
Product
Purity
Specification
Net weight (kg)
Bismuth Telluride Selenium Alloy Piece Powder
99.99%
Impurity Content (ppm)
Element
Guarantee Value(max)
Cu
5
Mg
10
Ag
5
Ni
10
Zn
5
Fe
10
Al
10
As
5
Cd
5
Pb
10
Cr
10
Sn
5
Applications of Bismuth Telluride Selenium Alloy
Thermoelectric Generators (TEGs): BTS alloys are used in TEGs to convert waste heat from industrial processes, automotive exhaust, or even body heat into usable electricity.
Cooling Devices: The Peltier effect, the reverse process of thermoelectric generation, is employed in BTS-based cooling systems for applications requiring local cooling, such as in electronic devices or medical instruments.
Temperature Control Systems: BTS alloys find application in precision temperature control units due to their ability to act as both heaters and coolers when powered appropriately.
Energy Harvesting: In remote or low-power applications, BTS-based harvesters can capture ambient heat to power small electronic devices or sensors.
Company Profile
Luoyang Tongrun Nano Technology Co. Ltd. (TRUNNANO) is a trusted global chemical material supplier & manufacturer with over 12-year-experience in providing super high-quality chemicals and nanomaterials, including boride powder, nitride powder, graphite powder, sulfide powder, 3D printing powder, etc.
The company has a professional technical department and Quality Supervision Department, a well-equipped laboratory, and equipped with advanced testing equipment and after-sales customer service center.
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Shipment term By air, by sea, by express, as customers request.
Storage conditions 1) Store in a dry environment at room temperature. 2) Avoid damp and high temperature. 3) Use immediately after opening the inner packing bag.
FAQs of Bismuth Telluride Selenium Alloy
Q1. Is Bi₂Te₃-xSex alloy toxic? A: Components of the alloy, particularly bismuth and tellurium, are generally considered less toxic compared to lead-based thermoelectric materials. However, proper handling and disposal practices are still recommended to ensure safety.
Q2. How does selenium improve the thermoelectric efficiency of Bi₂Te₃? A: Selenium substitution can narrow the bandgap of Bi₂Te₃, leading to increased electrical conductivity without significantly increasing thermal conductivity, thereby improving the thermoelectric figure of merit (ZT).
Q3. Are BTS alloys suitable for high-temperature applications? A: BTS alloys are typically optimized for medium to low-grade heat recovery, with operational temperatures usually below 300°C. For higher temperatures, other thermoelectric materials might be more suitable.
Q4. Can BTS alloys be recycled? A: Yes, recycling of thermoelectric materials like BTS alloys is possible and encouraged to recover valuable elements and reduce environmental impact. However, specialized recycling processes are required.
Q5. Are BTS-based thermoelectric devices commercially available? A: Yes, BTS-based thermoelectric generators and cooling modules are commercially available and are being integrated into various industries and consumer products for energy harvesting and temperature control applications.
