A flexible three-dimensional MoS2/carbon architecture derived from melamine foam as free-standing anode for high performance lithium-ion batteries

MoS 2 has been investigated extensively as novel energy storage materials because of its unique physical and chemical properties. Herein, a flexible Three-Dimensional (3D) free-standing composite is rationally designed and synthesized by growing MoS 2 nanosheets onto carbonized melamine foam. Afterwards, nitrogen-doped carbon (NC) coating is created on the bare MoS 2 nanosheets depends on dopamine self-polymerization. The composite can be used directly as a free-standing anode for lithium-ion batteries. It exhibits high reversible lithium storage capacity with good cyclic performance (573.8 mAh g −1 at current density of 500 mA g −1 after 200 cycles) and rate capability (536.9 mAh g −1 at current density of 2000 mA g −1 ). The outstanding electrochemistry properties are mainly attributed to the well-designed architecture. The interconnected carbon skeleton provides 3D fast transport paths for electron. NC coating on MoS 2 nanosheets and the carbon filled in the interspaces between MoS 2 nanosheets serves as conductive matrix which enhances the electrical conductivity, expands the path of electron transport and accelerates electron transfer.