▎ 摘　　要

NOVELTY - Preparation of cathode material of sodium ion battery comprises dissolving glucose and graphene oxide in deionized water, hydrothermally reacting to obtain hydrothermal product, freeze-drying hydrothermal product to obtain dried product, and carrying out heat treatment to dried product to obtain sodium ion cathode material. USE - The method is for preparing cathode material of sodium ion battery used in power battery, large energy storage device, intelligent network, portable electronic device, electric automobile, intelligent power grid and renewable energy storage system. ADVANTAGE - The method enables to prepare sodium ion battery cathode material, which solves the technical problem of reducing the first coulomb efficiency of the battery in the existing technology. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a sodium ion battery comprising cathode material and additive.