Monodispersed Sulfur Nanoparticles for Lithium Sulfur Batteries with Theoretical Performance

While LiS batteries are poised to be the next generation high-density energy storage devices, low sulfur utilization and slow rate performance have limited their practical applications. Here, we report the synthesis of monodispersed S-8 nanoparticles (NPs) with different diameter and the nanosize dependent kinetic characteristics of the corresponding LiS batteries. Most remarkably, 5 nm S NPs display the theoretical discharging/charging capacity of 1672 mAh g(-1) at 0.1 C rate and a discharge capacity of 1089 mAh g(-1) at 4 C.