▎ 摘　　要

Here, we reported the synthesis of a three-dimensional (3D) interconnected network nanostructure of reduced graphene oxide (rGO), enwrapping mesoporous ZnS nanospheres (m-ZnS NSs@rGO). The synthesis is implemented by a simple gelatin-assisted hydrothermal reaction followed by self-assembly between mesoporous ZnS NSs and rGO. As a result of the synergic effect of the special nanostructure of ZnS nanospheres and rGO enwrapping, the m-ZnS NSs@rGO composite exhibits favorable features as anode material in sodium-ion batteries. These features include good cycling stability (513 mAhg(-1) at 0.1 Ag-1 after 80 cycles) and good rate capability (320 mAhg(-1) at 1 Ag-1). The 3D conductive structure, in conjunction with the mesoporous ZnS nanoparticles, provide advantageous features to the hybrids to buffer volume expansion/contraction upon the sodiation/desodiation process and facilitate mass (ions and electron) transportation and electron transfer.