Interface Engineering Modulation of 3D Layered Ti 3 C 2 T x /MoS 1.5 Se 0.5 Composite Aerogel for Advanced Anode in Sodium‐Ion Batteries

Abstract Sodium‐ion batteries (SIBs) are limited in practical application due to the lack of an anode material with sufficient lifetime and excellent rate performance. To address this issue, Se‐doped MoS 2 nanosheets grown on 3D MXene aerogel (Ti 3 C 2 T x /MoS 1.5 Se 0.5 ) is proposed as advanced anode material in SIBs. The 3D MXene aerogel structure, the directional arrangement of the MoS 2 nanosheets, and the in situ heterostructure facilitate the rapid transfer of Na + , mitigate the volume expansion during sodium ion storage, and generate more active sites. Se doping can expand the interlayer spacing of MoS 2 and form a large number of defects. This work can provide a feasible strategy for develop advanced MXene‐based electrodes materials.