▎ 摘　　要

The competitiveness of reduced graphene oxide (GO) based composite can be significantly improved when the raw material of GO become the low-cost microcrystalline graphite mine. Herein, we first successfully fabricate high-quality microcrystalline graphite GO (MGO) with small size < 1 mu m by a modified pressurized oxidation approach. Subsequently, Fe3O4@C/PrMGO composite is simply constructed by using porous reduced MGO (PrMGO) to support carbon coated Fe3O4 nanoparticles (Fe3O4@CNPs). The Fe3O4@C/PrMGO composite exhibits high reversible capacity and excellent cyclic stability that a high reversible capacity of 1216 mA h g(-1) is received after 392 cycles at 100 mA g(-1). Meanwhile, the composite possesses high rate retentions, superior structural and cycling stability, which are further revealed by rate test, SEM and EIS analyses. The significant advantages of Fe3O4@C/PrMGO composite (low cost, facile operation and high electrochemical performances) endow the composite to be practically promising anode material for next-generation LIBs. This research supplies a new strategy to fabricate low-cost and high performances MGO-based anode materials. (C) 2017 Elsevier B.V. All rights reserved.