High capacity and cyclability of hierarchical MoS2/SnO2 nanocomposites as the cathode of lithium-sulfur battery

Abstract Hierarchical MoS 2 /SnO 2 nanocomposites are synthesized via a two-step hydrothermal method, and SnO 2 are uniformly loaded on the surface of MoS 2 nanosheets. As the cathode of lithium-sulfur battery, the nanocomposites exhibit high capacity and cyclability. The reversible capacity is up to 900 mAh g −1 after 80 cycles at 0.2 C rate. The superior electrochemical performance can be attributed to that the diffusion of lithium polysulfide can be greatly inhibited by the loading of SnO 2 nanoparticles. The metallic Mo particles embedded in the system can increase the conductance of the composites. The present results indicate that hierarchical MoS 2 -based nanocomposites are good candidates for the cathode of lithium-sulfur battery.