Preparation of SnS2/enteromorpha prolifera derived carbon composite and its performance of sodium-ion batteries

Abstract SnS2 has aroused great interests for application of sodium-ion batteries, because of its graphene-like structure and high theoretical capacity. Herein, we present an effective nanocasting strategy to fabricate the SnS2/enteromorpha prolifera derived carbon (SnS2/EPC) composite, whose microstructure anchors the SnS2 nanosheets on enteromorpha prolifera (EP) derived carbon. It can effectively solve the problems of poor conductivity and volume expansion of SnS2 electrode during charging and discharging process. The optimized SnS2/EPC could deliver high reversible capacity of 443 mA h g-1 at 0.1 A g-1, and maintain reversible capacity of 340 mA h g-1 at high rate of 2 A g-1 after 450 cycles, indicating that SnS2/EPC is a promising anode material for sodium storage.