▎ 摘　　要

NOVELTY - A sodium manganese oxide/graphene composite electrode material comprises graphene and sodium manganese oxide particles. The surface of the sodium manganate particles is coated with the graphene. The sodium manganate particles are linked to each other by graphene. USE - The sodium manganese oxide/graphene composite electrode material is useful as anode material for sodium ion battery (all claimed). ADVANTAGE - The sodium manganese oxide/graphene composite electrode material is economical and suitable for large-scale industrial production, and can be prepared with high capacity and low energy consumption. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: (1) anode material, which comprises sodium manganese oxide/graphene composite electrode material; and (2) preparation method of sodium manganese oxide/graphene composite electrode material, which involves mixing manganese dioxide, sodium fluoride and sodium carbonate and ball milling, pressing the powder at pressure of 2 MPa, cooling to room temperature, ball milling, pressing the powder at 2 MPa, mixing graphene and fluorine-doped sodium manganese oxide particles in weight ratio of 1:5-1:15 and ball milling.