Chevrel Phase Mo₆T₈ (T = S, Se) as Electrodes for Advanced Energy Storage

With the large-scale applications of electric vehicles in recent years, future batteries are required to be higher in power and possess higher energy densities, be more environmental friendly, and have longer cycling life, lower cost, and greater safety than current batteries. Therefore, to develop alternative electrode materials for advanced batteries is an important research direction. Recently, the Chevrel phase Mo₆ T₈ (T = S, Se) has attracted increasing attention as electrode candidate for advanced batteries, including monovalent (e.g., lithium and sodium) and multivalent (e.g., magnesium, zinc and aluminum) ion batteries. Benefiting from its unique open crystal structure, the Chevrel phase Mo₆ T₈ cannot only ensure rapid ion transport, but also retain the structure stability during electrochemical reactions. Although the history of the research on Mo₆ T₈ as electrodes for advanced batteries is short, there has been significant progress on the design and fabrication of Mo₆ T₈ for various advanced batteries as above mentioned. An overview of the recent progress on Mo₆ T₈ electrodes applied in advanced batteries is provided, including synthesis methods and diverse structures for Mo₆ T₈ , and electrochemical mechanism and performance of Mo₆ T₈ . Additionally, a briefly conclusion on the significant progress, obvious drawbacks, emerging challenges and some perspectives on the research of Mo₆ T₈ for advanced batteries in the near future is provided.