| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Alloys and Compounds for Thermoelectric and Solar Cell Applications XI
|
| Presentation Title |
Young Leaders International Scholar – JIM: Discovery of Triple Half-Heusler with Low Thermal Conductivity |
| Author(s) |
Kazuki Imasato, Philipp Sauerschinig, Shashwat Anand, Takao Ishida, Atsushi Yamamoto, Michihiro Ohta |
| On-Site Speaker (Planned) |
Kazuki Imasato |
| Abstract Scope |
Half-Heusler (HH, general formula: XYZ) materials have been extensively researched for their potential in thermoelectric materials and other applications. The concept of double half-Heusler (DHH) was recently proposed as a potential strategy to reduce lattice thermal conductivity for better thermoelectric performance. In this talk, we will expand this idea further to triple half-Heusler (THH). THH phase was successfully synthesized by following an unconventional valence balance strategy. Even though both ternary components of THH phase are unstable with the metallic transport properties, experimental results indicated a homogeneous and pure characteristic of synthesized samples with a large Seebeck coefficient. In addition, the lattice thermal conductivity is lower than half-Heusler standards around room temperature. Since a high thermal conductivity has been always a problem for HH-based thermoelectric materials, the synthesis of THH with very low lattice thermal conductivity can be a new direction for the high-performance of HH thermoelectrics. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Energy Conversion and Storage, Characterization, Ceramics |