Excellent performance of Fe₃O₄-perforated graphene composite as promising anode in practical Li-ion configuration with LiMn₂O₄

In this work, we report the charge storage performance of Fe₃O₄-hierarchically perforated graphene nanosheet (Fe₃O₄-HPGN) based nanocomposite as an anode material in the full cell configuration with spinel LiMn₂O₄ cathode. When the electrochemical performance of Fe₃O₄-HPGN is evaluated in half-cell assembly (with Li metal) a first reversible capacity of 1002 mA h g^-1 is noted at 0.1 C. The full-cell displays a reversible capacity of ∼603 mA h g^-1 (based on anode loading) at 0.11 C rate with working potential of ∼2.7 V. Charge-discharge profiles for the full cell up to 10,000 cycles at 2.15 C rate show ∼66% capacity retention. The observed electrochemical performance is attributed to the presence of hierarchical perforations on 2D graphene which help stabilize the electrochemically active Fe₃O₄ phase while facilitating the electron transport.