A supercritical ethanol route for one-pot synthesis of tin sulfide–reduced graphene oxides and their anode performance for lithium ion batteries

A simple, green, and ultra-fast one-pot supercritical ethanol (scEtOH) route was developed to synthesize tin sulfide–reduced graphene oxides (SnS–RGOs) by the simultaneous reduction of GO and the heterogeneous nucleation and growth of SnS nanosheets on the basal plane of RGO. The SnS–RGO composites exhibited a mesoporous structure with porosity up to 63%. When tested as an anode in lithium-ion batteries, the SnS–RGO composite with 44 wt% SnS loading delivered high reversible capacity of 613 mAh g⁻¹ at 50 mA g⁻¹ after 100 cycles and high rate capacity of 198 mAh g⁻¹ at a high charge-discharge rate of 1 A g⁻¹.