Engineering stable and fast sodium diffusion route by constructing hierarchical MoS2 hollow spheres

High sodium storage performance was demonstrated for hierarchical MoS 2 hollow spheres by providing stable and fast sodium diffusion routes. Two-dimensional layered transition metal dichalcogenides, such as MoS 2 , have been considered to be a promising anode material for sodium storage. However, their performance have been limited by the sluggish sodium diffusion kinetics. In this work, high performance anode material was obtained through constructing hierarchical MoS 2 nanosheets assembled hollow spheres. The used self-templating method show more feasibility than the commonly reported template removal-involved routes. The prepared hollow structure can also provide rapid and stable electron/sodium ion transport without the assistance of conducting substrates, which enables the MoS 2 anodes exhibit a high specific capacity of 527 mAh g −1 at 0.1 A g −1 . Even at a high current density of 1 A g −1 , capacity of 357 mAh g −1 can still be obtained after 500 cycles (capacity retention ~94.5%). This work provides a facile way towards high performance MoS 2 anode materials for sodium-ion battery.