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A MgFe2O4/C material is synthesized via a facile method and the MgFe2O4/C electrode shows excellent cycling and rate capability.

Vesicle-like MgFe2O4/graphene 3D network anode material was synthesized via a simple one-step in situ growth of solvothermal technique. The as-obtained unique 3D nanostructure consists of MgFe2O4 particles randomly anchored on mutual cross-linking graphene sheets functioning as a mechanical support and an efficient electron conducting pathway. The as-synthesized anode material shows an excellent rate capability and outstanding cycling stability. A specific capacity of 1300 mAh g–1 can be maintained at 1000 mA g–1 in a prolonged charge/discharge process (200 cycles). When cycling at a high current density of 10,000 mA g–1, a specific capacity of 597 mAh g–1 can still be achieved. The superior battery performance can be attributed to the unique 3D network structure, which provides an efficiently conductive network, buffers the volume expansion, and improves the structure integrity of the electrode.

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