1T MoS2 growth from exfoliated MoS2 nucleation as high rate anode for sodium storage

Recently, metallic 1T MoS2 has been investigated due to its excellent performance in electrocatalysts, photocatalysts, supercapacitors and secondary batteries. However, there are only a few fabrication methods to synthesize stable 1T MoS2. In this work, exfoliated MoS2 is employed as seed crystals for the nucleation and growth of a stable 1T MoS2 grains by an epitaxial growth strategy. The 1T MoS2 displays a large interlayer spacing around 0.95 nm, excellent hydrophilia and more electrochemically active sites along the basal plane, which contribute an efficient ion/electron transport pathway and structural stability. When employed as the anode material for sodium ion batteries, the 1T MoS2 electrodes can survive 500 full charge/discharge cycles with a minimum capacity loss of 0.40 mAh g(-1) cycle(-1) tested at a current density of 1.0 A g(-1), and the capacity degradation is as low as 0.39 mAh g(-1) cycle(-1) at a current density of 2.0 A g(-1).