▎ 摘　　要

NOVELTY - Flower spherical graphene material, comprises multiple two-dimensional petal-shaped sheet structure, and has a three-dimensional channel structure. The diameter of flower-shaped graphene material is 10-25 μm, and the size of the channel is 5-15 nm. USE - The material is useful for anode pole piece used in sodium-based dual-ion battery (all claimed). ADVANTAGE - The material has a three-dimensional continuous network structure, has larger specific surface area, can provide more electrochemical activity sites for removing/embedding anion, improves the specific capacity of the anode material, can effectively relieve the anion in the process of removing or embedding caused by volume change, and improves the stability of positive electrode materials. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for: preparing flower spherical graphene material; anode pole piece; preparing anode pole piece; and odium-based dual-ion battery.