Two-step synthesis of carbon/nitrogen double-doped interconnected Fe3O4 composite as anode material for lithium-ion battery

Interconnected carbon/nitrogen double-doped Fe3O4 (Fe3O4/C/N) composite as anode material for lithium-ion battery was prepared by a simple and efficient two-step method. Fe3O4/C/N composite was characterized and analyzed by XRD, XPS, TG, SEM and TEM. It was found that Fe3O4/C/N composite as anode material for lithium-ion battery showed high reversible capacity and excellent cycling performance. The initial coulomb efficiency of Fe3O4/C/N was 73.9% at a current density of 0.2 A/g. The capacity was 516 mA•h/g after 210 cycles, and the capacity retention rate was 64.6%. The capacity decay rate for each cycle was 0.17%. © 2020, Editorial Office of FINE CHEMICALS. All right reserved.