Fe₃O₄/C nanosheets are prepared by annealing the iron alkoxide counterparts.

The nanosheets are in the form of carbon matrix supporting Fe₃O₄ nanocrystals.

The C_d of the nanosheets retains of 647 mAh g⁻¹ after 100 cycles at 100 mA g⁻¹.

The C_d of the nanosheets retains of 546 mAh g⁻¹ after 100 cycles at 200 mA g⁻¹.