Entropy stabilized Heusler alloys for thermoelectric applications

Abstract

Entropy engineering is a promising strategy for high-performance thermoelectrics, as it enhances material stability, reduces thermal conductivity, and optimizes electronic transport by manipulating configurational entropy. This perspective highlights the design principles and recent advancements in the development of entropy-stabilized Heusler alloys (ESHAs) for thermoelectric applications. The extensive compositional space available in ESHAs provides exciting opportunities to explore entropy stabilized multicomponent alloying, potentially leading to the discovery of new compositions with enhanced thermoelectric properties. However, challenges persist in optimizing these compositions, understanding the composition – structure – properties relationships, and scaling up production. Addressing these challenges remains critical for advancing the practical application of ESHAs in thermoelectrics.