MoS2 architectures supported on graphene foam/carbon nanotube hybrid films: highly integrated frameworks with ideal contact for superior lithium storage

Abstract

Three-dimensional (3D) nanoworm-like MoS₂ architectures have been successfully synthesized and directly supported on graphene foam/carbon nanotubes (GF/CNT) hybrid films. The sp²-hybridized GF/CNT films provide robust frameworks with an ideal contact for the nucleation and subsequent massive growth of the MoS₂ architectures, while acting as an efficient current collector with a conductive contact for binder-free electrodes. The as-prepared hierarchical MoS₂@GF/CNT electrode shows capacities of 1368 mA h g⁻¹ and 823 mA h g⁻¹ at current densities of 200 mA g⁻¹ and 5000 mA g⁻¹, and can retain 81.3% of the initial reversible capacity up to 120 cycles.