MXene framework-supported F, S, and Co ternary-doped tin dioxide hybrid structures for ultrafast and stable lithium-ion batteries

Owing to the increasing requirements of electronic devices, lithium-ion batteries (LIBs) have emerged as a potential energy storage medium. However, given the limitations of pure graphite, it is crucial to develop anode materials for ultrafast LIB applications. Recently, the study of MXenes in energy storage fields has developed rapidly owing to their numerously distinct advantages for energy storage, including high electrical conductivity, high specific surface area, and high wettability. In this study, we first present the Ti₃C₂T_x MXene framework-supported F, S, and Co ternary-doped tin dioxide hybrid structure (MXene-FCTOS) using an ultrasonic spray pyrolysis deposition process followed by the dopant-evaporation method. The resulting MXene-FCTOS exhibited notable energy storage performance, including high specific capacity (473.24 mAh/g at a current density of 100 mA/g) with superior ultrafast energy storage performance (125.25 mAh/g at 3000 mA/g). Hence, we believe that the MXene-FCTOS exhibits sufficient potential for realizing a competitive material for ultrafast LIB anodes.