▎ 摘　　要

NOVELTY - A flower-shaped cobalt trioxide/graphene oxide hollow microspheres composite electrode material comprises micron-hollow microspheres. The wall of the hollow microspheres is composed of two-dimensional nanosheets along radial direction. The two-dimensional nanosheets are distributed with hole having diameter of 2-5 nm. The main material of the two-dimensional nanosheets is cobalt trioxide. The two-dimensional nanosheets are attached on a surface of a graphene sheet. USE - Flower-shaped cobalt trioxide/graphene oxide hollow microspheres composite electrode material for preparing anode material (claimed) for lithium ion battery. ADVANTAGE - The flower-shaped cobalt trioxide/graphene oxide hollow microspheres composite electrode material has excellent cycle performance and multiplying power performance, and avoids the agglomeration of nanostructures in the charging and discharging process. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: (1) preparation method of flower-shaped cobalt trioxide/graphene oxide hollow microspheres composite electrode material; (2) use of flower-shaped cobalt trioxide/graphene oxide hollow microspheres composite electrode material in preparation of anode material for lithium ion battery; and (3) anode for lithium ion battery.