Unlocking the Potential of MoS@ZnFeS Nanosheet Catalyst as an Anode Electrode Material for Synergistic Improvement of Capacity and Durability in Lithium-Ion Battery Performance.

It is indispensable to enhance the capacity and stability of electrodes to improve the overall activity of lithium-ion batteries. This study explores the development of a lithium-ion battery (LIB) anode using a molybdenum disulfide and zinc-iron sulfide (MoS@ZnFeS) composite to enhance energy storage performance. MoS@ZnFeS nanosheets were synthesized through a two-step hydrothermal process, resulting in a unique heterostructure characterized by a high electroactive surface area and numerous buffer zones that facilitate volume expansion during lithium intercalation. Electrochemical analysis revealed that the MoS@ZnFeS anode achieved an ultra-high reversible capacity of 685.3 mA h g after 200 cycles at 0.1 A g, exhibiting excellent capacity retention with only 0.017% capacity loss per cycle at 0.1 A g over 1000 cycles. Additionally, the anode demonstrated a high rate capability of 221.1 mA h g at 2 A g. The exceptional lithium-storage capability of MoS@ZnFeS can be attributed to its extensive network of ion exchange pathway and its robust structural integrity. These findings underscore the potential of MoS@ZnFeS as a high-performance anode material for next-generation LIBs, offering significant advantages in energy storage applications.