▎ 摘　　要

In this work, we construct a binder-free electrode by integrating Li4Ti5O12 (LTO) nanoparticles onto freestanding graphene foam (GF) via hydrothermal method. The CVD-grown GF is used as the backbone for the deposition of LTO nanoparticles of 20-50 nm. Enhanced reaction kinetics including fast ion/electron transfer is achieved with the help of conductive GF matrix. The electrochemical performance of the VG/LTO as the anode of Li ion batteries (LIBs) are studied and demonstrated with a capacity of 171 mAh g(-1) at 1 C, and good cycles with a capacity retention of 77%. High-rate capability is also verified with a capacity of 108 mAh g(-1) at 10 C. The designed porous integrated architecture is favorable for the diffusion of ion/electrons, and good contact with the electrolyte. Our results provide a new way for developing highperformance anode of LIBs. (C) 2017 Elsevier Ltd. All rights reserved.