In-situ Grown SnS(2) Nanosheets on rGO as an Advanced Anode Material for Lithium and Sodium Ion Batteries

SnS(2) nanosheets/reduced graphene oxide (rGO) composite was prepared by reflux condensation and hydrothermal methods. In this composite, SnS(2) nanosheets in-situ grew on the surface of rGO nanosheets. The SnS(2)/rGO composite as anode material was investigated both in lithium ion battery (LIB) and sodium ion battery (SIB) systems. The capacity of SnS(2)/rGO electrode in LIB achieved 514 mAh g(−1) at 1.2 A g(−1) after 300 cycles. Moreover, the SnS(2)/rGO electrode in SIB delivered a discharge capacity of 645 mAh g(−1) at 0.05 A g(−1); after 100 cycles at 0.25 A g(−1), the capacity retention still keep 81.2% relative to the capacity of the 6th cycle. Due to the introduction of rGO in the composite, the charge-transfer resistance became much smaller. Compared with SnS(2)/C electrode, SnS(2)/rGO electrode had higher discharge capacity and much better cycling performance.