Progress in Iron Oxides Based Nanostructures for Applications in Energy Storage

Table 4 A Summary of synthesis and electrochemical performance of Fe₃O₄ based nanostructures

Structure	Synthesis	Electrochemical performance	Ref
Fe₃O₄ nanoparticles	Hydrothermal synthesis	Capacitance of 207.7 F g⁻¹ at 0.4 A g⁻¹; retention of 100% after 2000 cycles	[106]
Hierarchical porous Fe₃O₄/graphene nanowires	Hydrothermal synthesis	Capacity of 1146 mA h g⁻¹ at 5 A g⁻¹	[51]
Fe₃O₄ particles/carbon nanonetworks	Thermolysis	Capacity of 1534 mA h g⁻¹ at a 1 C; without decay up to 500 cycles (1 C = 1 A g⁻¹)	[109]
Fe₃O₄ doped double-shelled hollow carbon spheres	Rapid aerosol	Capacitance of 1153 F g⁻¹ at 2 A g⁻¹; retention of 96.7% after 8000 cycles	[4]