Erythrocyte-like Fe₂O₃@SnO₂ heterostructures anchored on graphene oxide composite anode material for high-performance lithium-ion battery

Morphology design and synthesis of composite materials are current research trends to improve the performance of anode materials for lithium-ion batteries. Combining morphological design with the synthesis of composite material to synthesize the erythrocyte-like Fe₂O₃@SnO₂ heterostructures anchored on graphene oxide composite Fe₂O₃@SnO₂@GO. The comprehensive performance of the composite was optimal when the content of graphene oxide was about 20%. The cycling curve of FSG-20 was relatively smooth and the capacity was stable at 826.2 mAh g⁻¹ after 100 cycles at 0.1 C current density. In addition, the capacity did not show any serious degradation when cycled at current densities from 0.1 to 2.0 C. The improved electrochemical performance of the composites was attributed to the excellent electrical conductivity and stability of graphene oxide and the synergistic effect between different substances. This multi-step modification can effectively enhance the electrochemical performance of the Fe₂O₃ anode material.