▎ 摘　　要

Graphene/Co3O4 microrods hybrids were prepared via a facile two-step process by a hydrothermal reaction to synthesize Co3O4 microrods, followed by a hydrothermal reduction of the graphene oxide with urea to yield graphene coating on the Co3O4 microrods. These assembled graphene/Co3O4 electrode exhibits a high reversible capacity of 957 mAh g(-1) for the first cycle and retain a reversible capacity of more than 560 mAh g(-1) after 70 discharge/charge cycles. Moreover, this hybrids electrode also exhibits excellent cycling performance, good rate capability and enhanced electrical conductivity, which are much better than those of bare Co3O4 microrods. These unique features make the Graphene/Co3O4 microrods hybrids a very promising anode material of high-performance lithium-ion batteries.