Publications by authors named "Qiujun Hu"
Article Synopsis
- Thermoelectric generators can harvest waste heat for energy but face challenges due to inefficient materials and complex manufacturing processes.* -
- A new method of 3D printing the thermoelectric material NbHfFeSb using laser powder bed fusion (LPBF) induces defects that reduce thermal conductivity, enhancing performance.* -
- The printed material demonstrates a high efficiency (≈3.3%) and improved mechanical performance, indicating LPBF's potential to revolutionize thermoelectric materials for industry.*
3D Printing of BiTe-Based Thermoelectric Materials with High Performance and Shape Controllability.
ACS Appl Mater Interfaces
August 2023
Thermoelectric (TE) energy conversion technology provides a promising way to improve the efficiency of fossil energy by generating electricity from low-grade waste heat. With regard to these applications, thermoelectric generators (TEGs) should be designed from system integration perspectives to simultaneously improve heat transfer efficiency and system simplification as well as the robust mechanical properties. However, typical TEGs fabricated by conventional methods barely accomplish such requirements.
View Article and Find Full Text PDFBroad Temperature Plateau for High Thermoelectric Properties of n-Type BiTeSe by 3D Printing-Driven Defect Engineering.
ACS Appl Mater Interfaces
January 2023
Article Synopsis
- Researchers developed high-energy-conversion BiTe-based thermoelectric generators (TEGs) that achieve improved performance by enhancing the n-type leg's figure of merit (zT).
- They utilized 3D printing and defect engineering to optimize electronic and phonon transport properties, resulting in a peak zT of 1.33 and a significant reduction in thermal conductivity.
- The study demonstrated the potential of these 3D-printed materials, achieving an impressive energy conversion efficiency of 10.2% with a unique honeycomb design for TEGs.
Realize High Thermoelectric Properties in n-Type BiTeSe/YO Nanocomposites by Constructing Heterointerfaces.
ACS Appl Mater Interfaces
August 2021
Due to the excellent thermoelectric performance, bismuth telluride (BiTe) compounds are highly promising for the thermoelectric conversion in the room temperature range. However, the inferior thermoelectric performance of the n-type leg severely restricts the applications of BiTe-based thermoelectric couples. Herein, n-type BiTeSe (BTS)-based thermoelectric materials incorporated with nanosized YO (0.
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