A graphene foam electrode with high sulfur loading for flexible and high energy Li-S batteries

A graphene foam-based flexible electrode provides a high electrical conductive network, interconnected ion diffusion channels, mechanical support and enough space for a large sulfur loading for Li-S batteries. Its areal capacity can reach 9.3 mAh cm−2 at a high current density of 1500 mA g−1 with an areal sulfur loading of 10.1 mg cm−2, which is promising for flexible Li-S batteries with high energy density.253