MXene-decorated SnS₂/Sn₃S₄ hybrid as anode material for high-rate lithium-ion batteries

The combination of transitional metal dichalcogenides with MXene is an effective strategy to explore high-performance anode materials for lithium-ion batteries (LIBs). In this work, SnS₂/Sn₃S₄ hybrid decorated on Ti₃C₂ MXene (S-TC) was prepared through a facile solvothermal and calcination process. The multi-layered Ti₃C₂ matrix improves the electron transport capability, inhibits the aggregation and accommodates the volume change of SnS₂/Sn₃S₄ hybrid, while the SnS₂/Sn₃S₄ hybrid confined in the multilayer stacks serves as a spacer to decrease the tendency of layer restacking and improves the limited capacities of Ti₃C₂. Besides, the nano-sized SnS₂/Sn₃S₄ hybrid with high specific surface area also enhances the contact between electrolyte and electrode. When used as anode for LIBs, S-TC demonstrates a good cycling stability (462.3 mAh g⁻¹ at 100 mA g⁻¹ after 100 cycles) and superior rate performance (216.5 mAh g⁻¹ at 5000 mA g⁻¹). The strategy in this work should provide a new insight into fabricating novel MXene-based anode material for high-rate LIBs.