writer：Yajin Hao, Zhiqiang Shi, Jing Wang, Qiang Xu
keywords：Nitrogen doped mesoporous carbon，lithium-sulfur batteries
source：期刊
specific source：RSC Advances
Issue time：2015年

To satisfy the demand for efficient energy storage employed in smart grids, electric vehicles and renewable energies, development of novel battery systems with remarkable specific

capacity, low-cost and eco-friendly becomes an imminent task for researchers. Compared with the traditional lithium ion batteries (LIBs), lithium-sulfur (Li-S) batteries have attracted increasing attention as the next-generation energy storage devices, owing to their extremely high theoretical specific capacity (1675 mAh g ?1) and energy density (2600 Wh kg ?1) of sulfur. In addition, sulfur is low-cost, earth abundant and eco-friendly, making this system

attractive for large scale applications.1 Despite these considerable advantages, the commercialization of Li-S battery is slowed down by several technical limitations. First, the poor intrinsic conductivity of pristine sulfur results in low utilization of sulfur cathode;2 second, the dissolution and migration of polysulfide intermediates produced during electrochemical reactions leads to the loss of active mass.