Enhanced cyclic performance of Cu2V2O7/reduced Graphene Oxide mesoporous microspheres assembled by nanoparticles as anode for Li-ion battery

Cu2V2O7/reduced Graphene Oxide (CVO/rGO) mesoporous microspheres were prepared by low temperature hydrothermal method and the following heat treatment process. The structures and morphology were characterized by X-ray diffraction (XRD), field-emissing scanning electron microscopy (FE-SEM). The reversible capacities of this mesoporous microspheres is 830 mAh.g(-1) at 0.1 A g(-1) after 200 cycles without capacity fade, which also exhibit superior rate capabilities with reversible capacities of 524 and 170 mAh.g(-1) after 10 cycles at 1 and 5 A g(-1), respectively. These excellent electrochemical properties may be attributed to the unique structures and the synergistic energy storage effect of rGO nanosheet and Cu2V2O7. (C) 2017 Elsevier B.V. All rights reserved.