Chevrel Phase Materials: Advances in Synthesis and Thermoelectric Applications

Abstract This review provides a comprehensive overview of the recent advancements in the synthesis and thermoelectric properties of Chevrel phase (CP) composites. CPs have garnered significant attention due to their unique crystal structure and potential for high‐temperature thermoelectric applications. The paper begins with an introduction to the background and significance of CPs. Then the developments on various synthesis methods of CPs, including high‐temperature solid‐state synthesis, molten salt synthesis, chemical processes, microwave technology, high‐energy mechanical milling, and self‐propagating high‐temperature synthesis (SHS) are introduced. The thermoelectric performance of CPs is discussed in detail, focusing on the relationship between metallic electron count (MEC) and ZT optimization, as well as efforts to decrease thermal conductivity ( κ ) and lattice thermal conductivity ( κ l ). The review highlights the importances of rapid preparation method of high‐purity CPs and tuning the electronic structure and chemical composition of CPs to enhance their thermoelectric properties. Key findings from recent studies are presented, including the synthesis and characterization of novel CP compounds such as Ag x Mo 9 Se 11 and Cu 3 M 2 Mo 15 Se 19 . The article concludes with a summary of the current state of CP thermoelectric materials and future directions for research and development in this area.