▎ 摘　　要

A new porous MoO2-Cu/C/graphene quadruple nanocomposite was designed and synthesized by a facile one-pot chemical precipitation method followed by calcination. As an anode for lithium ion batteries, the porous MoO2-Cu/C/graphene nanocomposite delivers a high reversible capacity with significantly enhanced cycling stability (1114.8 mAh g (1) after 100 cycles at 0.1 A g (1)) and rate capability (892.6 mAh g(-1) and 702.2 mAh g(-1) at 1 A g(-1) and 2 A g(-1), respectively). The greatly improved performances could be attributed to the positive synergistic effect of MoO2 nano-octahedrons, Cu, carbon network derived from metal-organic framework, and graphene: the MoO2 nano-octahedrons as lithium storage active materials, Cu phase as excellent conductor to improve the rate capability, the in-situ electrochemically carbon network as conductor and spacer to improve the rate capability and buffer the volume changes, and graphene as an efficient three dimensional conductive network to further accommodate the volume change of electrode materials. (C) 2017 Elsevier B.V. All rights reserved.