▎ 摘　　要

Practical application of the lithium-sulfur (Li-S) batteries is still hindered by their capacity decays caused by the shuttling of polysulfides. In this work, 3D MoS2 nanoporous spheres (MoS2-NPSs), exposing abundant active edges by decorating on conductive reduced graphene oxide aerogels (rGOA/GA), were fabricated as an S host to construct the S@MoS2@GA cathodes. An S@MoS2@GA-0.425 cathode constructed as such delivered an initial capacity of 688 mAh g(-1) and arrived at a high discharge capacity of 565 mAh g(-1) after 200 cycles at 0.2C; moreover, a reversible capacity of 324 mAh g(-1) retained for the electrode after 500 cycles at 1.0C with a slow capacity fading rate of 0.054% per cycle. The improved electrochemical performance can be attributed to the strong interactions of 3D MoS2@GA with lithium polysulfides intermediates (Li2Sn where 4