▎ 摘　　要

Three-dimensional Co3O4-graphene frameworks (3D-CGFs) are prepared with a one-pot hydrothermal method. Co3O4 particles are in situ anchored on graphene sheets, and the resulting composite self-assembles into 3D architecture during the hydrothermal treatment. Scanning electron microscope, transmission electron microscope, powder X-ray powder diffraction, and Raman spectroscopy are employed to characterize the sample. When tested as anode materials for lithium-ion batteries, 3D-CGFs demonstrate remarkable electrochemical lithium storage properties, such as large and stable reversible capacity (> 530 mAh g(-1) at 500 mA g(-1) over 300 cycles), good capacity retention (88 % retention after 300 cycles at 500 mA g(-1) compared with the 4th cycle), excellent high-rate performance (515 mAh g(-1) at 1 A g(-1)), making it a promising candidate for high-performance anode materials, especially for high-rate lithium-ion batteries.