| 초록 |
Sulfur has been highlighted as promising substitute for cathode materials in commercialized lithium ion batteries due to its high energy density, which is approximately 2600 Wh/g. However, solubility and diffusion of polysulfide intermediate during cycle and insulating nature of sulfur have been obstacle to commercialization of lithium sulfur batteries. In this study, we used hierarchical mesoporous carbon nanospheres which show the possibility of practical application because the nanoparticles could be obtained from simple and large-scale synthesis using unique wrinkle structured silica template. Sulfur has infiltrated in pores of porous carbon nanoparticles, which suppress the diffusion of soluble polysulfide, and thus improve the utilization of sulfur. This study will shed light on commercialization and economical process in lithium sulfur batteries. |
