Speaker
Description
This study investigates the thermoelectric properties of Mg₃Bi₂ compounded with varying amounts of Bi₂Te₃ to enhance its thermoelectric performance for cooling applications. The composites were synthesized using a solid-state reaction by ball milling method and characterized using X-ray diffraction (XRD), scanning electron microscopy (SEM), and energy-dispersive X-ray spectroscopy (EDS), ZEM 3 and LFA. The thermoelectric properties, including the Seebeck coefficient, electrical conductivity, and thermal conductivity, were measured across a range of temperatures from 300K to 600K. The results reveal that the addition of Bi₂Te₃ to Mg₃Bi₂ leads to significant improvements in thermoelectric performance around 500K. Specifically, the composites exhibit enhanced electrical conductivity and reduced thermal conductivity compared to the pristine Mg₃Bi₂. Furthermore, the Seebeck coefficient of the composites demonstrates a favorable trend towards increased thermopower. These findings suggest that Mg₃Bi₂/Bi₂Te₃ composites hold promise for efficient thermoelectric cooling applications, offering a potential pathway for advancing solid-state cooling technologies. Further optimization of composite compositions and fabrication techniques may lead to enhanced thermoelectric performance and broader applicability in cooling devices.
| Academic year | 3rd year |
|---|---|
| Research Advisor | Zhifeng Ren |
