Freestanding reduced graphene oxide–sulfur composite films for highly stable lithium–sulfur batteries

Abstract

Freestanding reduced graphene oxide–sulfur (rGO–S) composite films were fabricated by combining solution infiltration of sulfur into solvated rGO films with freeze-drying. Such rGO–S composite films can directly serve as the cathodes of lithium–sulfur (Li–S) batteries. The nanostructured architecture of rGO–S composite films considerably improved the cycling stability of Li–S batteries.