Effect of TiO2/carbon black in sulfur-based composite cathode for lithium-sulfur batteries

摘要

The lithium-sulfur (Li-S) battery systemis one of the most promising candidates for electric vehicle applications due to its higher energy density when compared with conventional lithium ion batteries. Even though, there are so many hindrances, such as insulation nature of sulfur and shuttle mechanism, to prohibit the commercialization of lithium-sulfur batteries. Herein, a facile method to improve the performance of lithium-sulfur (Li-S) batteries was reported. The composites were prepared by simple heat treatment method by embodied with carbon black (CB) and TiO2 to the sulfur. The improvement in capacity can be attributed to subsistence of the TiO2 to augment the electrochemical performance of the Li-S battery. The as-prepared cathode material exhibits the initial discharge capacity of 1399 mAh g(-1) at 0.1 C.