Coralloid Fe2O3/MgFe2O4 composite was synthesized via a simple gel-cast method.
It exhibits excellent electrochemical performance as anode material for LIBs.
The capacity stabilizes at 1700 mAh g−1 after 500 cycles at 1 A g−1.
Even cycled at 20 A g−1, a capacity of 760 mAh g−1 can still be achieved.