▎ 摘　　要

In this work, we fabricated a sulfur-infiltrated three-dimensional reduced graphene oxide wrapped Na4Mn9O18 nanorods microsphere (NMO/RGO/S) as efficient cathode material lithium/sulfur (Li/S) batteries. The NMO/RGO/S microsphere was developed by spray drying the NMO, GO, and S suspension followed by a hydrazine reduction process. The resulting hierarchical microsphere, constructed by cross-linked NMO nanorods and RGO sheet, shortens the electron/ion diffusion pathway. It also provides adequate void space to accommodate S and mitigate the volume variation during cycling. Additionally, the polar NMO nanorods offer strong chemical adsorption to lithium polysulfides, which was confirmed by adsorption experiment. Owing these features, the NMO/RGO/S electrode exhibited a high specific capacity and good cyclability as well. The initial discharge capacity is 952.8 mAh g(-1) at 1 C, and after 500 cycles, a discharge capacity of 520 mAh g(-1) is maintained, which corresponds to a capacity fading of 0.09% per cycle. The simple preparation method for the construction of NMO/RGO/S microsphere reported in the study advances the development of efficient cathode materials for Li/S battery. Graphical abstract