Facile Synthesis of High-quality N-doped Graphene Anchored with Fe₂O₃ for Use As Lithium-ion Battery Anode Materials

摘要

A hybrid material composed of nitrogen-doped graphene anchored with Fe2O3 was readily obtained bya facile and one-step hydrothermal method followed by assisting with microwave under mildconditions. Scanning electron microscopy and transmission electron microscopy images show thatFe2O3 with average size of 30-50 nm are homogeneously distributed and anchored on the surface ofnitrogen-doped graphene sheets. The N-doped graphene/Fe2O3 hybrid electrodes exhibit excellentelectrochemical performance with the charge/discharge capacity maintain stable at around 844.3-1 -1 mAhg and 937.7 mAhg after the 40 th cycle. The enhanced lithium-storage performance is ascribedto the rational design of the hybrid and has a great potential as anode material for lithium ion batteries.