Facile fabrication of Co3O4/nitrogen doped graphene hybrid materials as high performance anode materials for lithium ion batteries
Novel hybrid materials of well dispersed Co3O4 nanoparticles with high density anchored on nitrogen doped graphene (CNGs) are reported. The prepared CNGs show high performance as anode materials for lithium ion batteries (LIBs) such as high initial discharge capacity (1080.9 mA h g 1 at 50 mA g 1) long cycling stability (a high reversible capacity of 867.9 mA h g 1 after 350 cycles) and high rate capability (155.6 mA h g 1 at 2 A g 1) The high performance arises from the synergetic effect of conductive nitrogen doped graphene sheets and ultra small Co3O4 nanoparticles, which highlights the importance of the anchoring of the small sized nanoparticles on the doped graphene sheets for applications in LIBs.