▎ 摘　　要

NOVELTY - Graphene oxide is added and uniformly dispersed in water. Iron source is added to mixture, ultrasonically mixed, heated and reacted, to obtain two-dimensional metallic iron compound/graphene mixture. The two-dimensional metallic iron compound/graphene mixture is centrifuged, precipitated, added to binder comprising polyvinyl alcohol, mixed, frozen and dried, to obtain three-dimensional ordered composite. The three-dimensional ordered composite is placed in quartz boat and calcined, to obtain three-dimensional ordered carbon-coated iron-based/graphene anode material. USE - Preparation of three-dimensional ordered carbon-coated iron-based/graphene anode material used for lithium-ion battery (claimed). ADVANTAGE - The method enables preparation of three-dimensional ordered carbon-coated iron-based/graphene anode material having excellent charging and discharging characteristics with high yield by simple method. DETAILED DESCRIPTION - Graphene oxide is added and uniformly dispersed in water. Iron source is added to mixture, ultrasonically mixed, heated and reacted for 12 hours, to obtain two-dimensional metallic iron compound/graphene mixture. The iron source comprises mixture of ferric chloride and ferrous chloride in molar ratio of 2:1. The molar ratio of graphene oxide and iron source is 1:3-12. The two-dimensional metallic iron compound/graphene mixture is centrifuged at 8000 rpm for 8 minutes, and precipitated. The obtained precipitate is added to binder comprising polyvinyl alcohol, mixed, injected to 1 mL syringe, frozen with liquid nitrogen and dried, to obtain three-dimensional ordered composite. The weight ratio of polyvinyl alcohol and metallic iron compound/graphene mixture is 1:0.5-2. The three-dimensional ordered composite is placed in quartz boat and calcined at 400-600 degrees C and heating rate of 5 degrees C/minute for 2 hours in nitrogen atmosphere, to obtain three-dimensional ordered carbon-coated iron-based/graphene anode material.