Preparing a Composite Including SnS 2 , Carbon Nanotubes and S and Using as Cathode Material of Lithium-Sulfur Battery

A new SnS2/CNTs/S composite is prepared and used as the lithium-sulfur battery cathode material. SnS2 works as the adsorbent to hinder or reduce the shuttle effect of lithium polysulfides. CNTs work as the conductive network of the composite. The synergistic effect come from the SnS2 and CNTs commits to the Li-S battery electrochemical performance. The composite has shown a good electrochemical performance: the first discharge capacity is 1308.6 mAh g-1 (0.1 C) and a reversible capacity of 1002.3mAh.g-1 after 100 cycles, indicating a good potential application.