▎ 摘　　要

NOVELTY - odium ion hollow microsphere, coated with oxidized graphene. The chemical composition of the sodium ion hollow microsphere is NaxMnOy, where x is in the range of 0.5-0.99 and y is in the range of 2-2.5. USE - The sodium ion hollow microsphere is useful in sodium ion battery anode and battery, which is useful as an energy storage device. ADVANTAGE - The coating of graphene oxide improves the conductivity of the electrode material, greatly improves the high rate performance of the material, on the other hand, because the oxide graphene coated on the surface of the hollow microsphere, which effectively prevents the dissolving of the manganese element, which greatly improve the circulation stability of material. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: (1) the preparation method of sodium ion hollow micro-sphere; (2) a sodium ion battery anode material; (3) a sodium ion battery.