High-entropy thermoelectric materials

More than 60% of the energy in the world is wasted during the energy conversion processes but can be potentially collected by been applied in the TE community, yielding numerous high-entropy material systems that exhibit outstanding TE performance. This review outlines the design principles for entropy-stabilized TE materials. Subsequently, it discusses the impact of high entropy on electrical and thermal transport properties. Furthermore, the research advancements of various high-entropy TE material systems are summarized, encompassing IV-VI compounds, half-Heusler (HH) compounds, liquid-like materials, oxide-based ceramics, and other relevant systems. Finally, the conclusion and outlook for high-entropy TE materials are elucidated. Only small regions of high-entropy TE materials have been investigated so far, and there will be vast space that remains to be explored. High-entropy TE materials will be one of the core strategies in the TE community if the optimization mechanism is completely understood.