About this Abstract |
Meeting |
2025 TMS Annual Meeting & Exhibition
|
Symposium
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Alloys and Compounds for Thermoelectric and Solar Cell Applications XIII
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Presentation Title |
Exploration of New Half-Heusler Composition to Achieve Carbon Neutrality |
Author(s) |
Kazuki Imasato |
On-Site Speaker (Planned) |
Kazuki Imasato |
Abstract Scope |
As a novel application of thermoelectrics for the advancement of carbon neutrality, we will discuss the effectiveness of applying thermoelectric devices in biochar pyrolysis plants. Due to the lack of mechanical stability and high-temperature durability in current commercial materials such as Bi2Te3, the development of new materials is required for these applications. HH compositions can be a good candidate for thermoelectric modules for biochar plants. However, achieving high-performance HH-based materials has been challenging due to their high thermal conductivity. We have developed double Half-Heusler and triple Half-Heusler compositions with decreased lattice thermal conductivity. The lattice thermal conductivity of the synthesized compositions is less than 3 W/mK, which is significantly lower than conventional Half-Heusler standards. Additionally, p-type to n-type transitions can be achieved without adding extrinsic dopants by utilizing valence balance concept. These new strategies provide useful guidelines for discovering superior compositions to develop thermoelectric devices that contribute to carbon-neutral technologies. |
Proceedings Inclusion? |
Planned: |
Keywords |
Electronic Materials, Energy Conversion and Storage, Sustainability |