▎ 摘　　要

A Co3O4/N-doped reduced graphene oxide (N-doped GN) nanocomposite was successfully synthesized by a facile freeze-drying method and heat-treated subsequently. When used as an anode material for lithium ion batteries (LIBs), the composite showed superb cycling stability and rate performance. More remarkably, the Co3O4/N-doped GN composite achieved an ultrahigh reversible capacity of 950 mA h g(-1) exceeds the theoretical capacity (890 mA h g(-1)) of Co3O4 after 100 cycles at a current density of 0.2 A g(-1), which made it a promising anode material for LIBs. Therefore, the nanocomposite can be deemed to be potential candidates as anode materials for further investigation. (C) 2015 Elsevier Ltd and Techna Group S.r.l. All rights reserved.