3D MoS2 foam integrated with carbon paper as binder-free anode for high performance sodium-ion batteries

3D MoS2 foam integrated with carbon paper (3D F-MoS2/CP) was synthesized in large-scale (up to 20 × 20 cm2) and used as binder-free electrode directly. It showed a superior initial discharge capacity (1080 mA h g−1 at 2000 mA g−1), rate performance and cycling stability, and can be cycled at 2000 mA g−1 for 1000 cycles with an extremely low decay rate (0.033% per cycle) in sodium-ion batteries.