Recent Advances in Nanostructured Thermoelectric Half-Heusler Compounds

Area of Science:

• Materials Science
• Solid State Physics
• Nanotechnology

Background:

• Half-Heusler (HH) alloys are promising for high-temperature thermoelectric (TE) applications.
• Industrial waste heat sources operate around 700 K, aligning with HH alloy potential.
• Nanostructuring has emerged as a critical strategy to boost TE performance in HH alloys.

Purpose of the Study:

• To review recent advancements in nanostructured Half-Heusler (HH) alloys for thermoelectric applications.
• To discuss strategies for enhancing TE properties in HH materials.
• To highlight future research directions for HH nanocomposites.

Main Methods:

• Review of structural properties of HH alloys.
• Analysis of various nanostructuring techniques applied to HH materials.
• Compilation of data on TE performance enhancement in HH nanocomposites.

Main Results:

• Nanostructuring significantly improves the thermoelectric performance of HH alloys.
• Various methods yield effective HH nanocomposites with enhanced properties.
• The review synthesizes current knowledge on HH nanocomposite development.

Conclusions:

• HH nanocomposites are highly promising for high-temperature thermoelectric energy conversion.
• Continued research into nanostructuring strategies will further optimize HH materials.
• Further exploration of HH nanocomposites is crucial for efficient waste heat utilization.