▎ 摘　　要

Herein, samples of in-situ obtained FeS2 were successfully grown on three dimensional (3D) graphene foam (3DGF), forming a free-standing flower bud-like and cauliflower-like structure (labelled as FeS2 FB/3DGF and FeS2 CF/3DGF). Both were used as anode materials for sodium-ion batteries (SIBs), which exhibited high-specific capacity, excellent rate capability and superior cycling performance. When evaluated as anode for SIBs at 0.3-3.0 V, the FeS2 CF/3DGF electrode had high capacity stability than the FeS2 FB/3DGF electrode, exploring a potential application in the next generation of SIBs.