Three-Dimensional Graphene Foam Supported Fe 3 O 4 Lithium Battery Anodes with Long Cycle Life and High Rate Capability

Fe3O4 has long been regarded as a promising anode material for lithium ion battery due to its high theoretical capacity, earth abundance, low cost, and nontoxic properties. However, up to now no effective and scalable method has been realized to overcome the bottleneck of poor cyclability and low rate capability. In this article, we report a bottom-up strategy assisted by atomic layer deposition to graft bicontinuous mesoporous nanostructure Fe3O4 onto three-dimensional graphene foams and directly use the composite as the lithium ion battery anode. This electrode exhibits high reversible capacity and fast charging and discharging capability. A high capacity of 785 mAh/g is achieved at 1C rate and is maintained…

• NR
  National Research Foundation
• AF
  Agency for Science, Technology and Research

  Award: 1121202012
• NR
  National Research Foundation Singapore
• MO
  Ministry of Education, India