Ionic Liquid-assisted Hydrothermal Synthesis of 1T-MoS2 and Its Zinc Ion Storage Performance
A 1T-MoS2 nanosheets array with expanded interlayer spacing was synthesized on carbon cloth(CC)using an ionic liquid-assisted hydrothermal method.As a positive electrode material for zinc ion batteries,1T-MoS2/CC exhibits a discharge specific capacity of 194.2 mA·h/g at 0.1 A/g current density,and can still maintain a capacity retention rate of 95.5％after 750 cycles at a high current density of 1 A/g.The excellent zinc ion storage capacity of 1T-MoS2/CC can be attributed to:(1)ionic liquids promote the formation of 1T phase,with a 1T-MoS2 phase content of about 78％in the nanoarray,and a high concentration of 1T phase content gives it a good charge transfer rate;(2)the insertion of ionic liquids between 1T-MoS2 layers increases the interlayer spacing to 1.06 nm,which can reduce the energy barrier during the insertion process of hydrated zinc ions;(3)the three-dimensional structure of carbon cloth can inhibit the aggregation of MoS2 nanopages and promote sufficient contact between 1T-MoS2/CC and electrolyte.
MoS21T phaseIonic liquidZinc ion batteryHydrothermal synthesis
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