LAUSR

Abstract Herein, the sandwich-like graphene-supported mesoporous silica nanosheets (G-mesosilica nanosheets) have been fabricated as sulfur cathode hosts for Li–S batteries. The obtained G-mesosilica nanosheets possess a mesoporous structure with two sizes (2.8 nm and 14 nm) of mesopores, an uniform thickness of ∼22 nm and a high specific surface area of 966 m2 g−1. As the sulfur hosts, the small mesoporous (2.8 nm) in each G-mesosilica nanosheet can effectively prevent the shuttle effect. As a consequence, the sulfur cathodes with unique G-mesosilica nanosheets as the sulfur hosts (G-mesosilica nanosheets/S cathodes) can significantly improve the long-term cycle performance (81% capacity retention after 500 cycles) of Li–S batteries.