▎ 摘　　要

NOVELTY - Preparing foam nickel-graphene three-dimensional porous electrode involves cleaning the nickel foam by glacial acetic acid, acetone and ethanol, washing with deionized water and drying, then preparing graphene oxide aqueous solution having concentration of 0.5-10 milligram/milliliter, and directly soaking the foam nickel into the graphene oxide aqueous solution for performing reduction reaction 30-80 degrees C for 2-12 hours. The graphene undergoes a reduction reaction during the immersion process and spontaneously deposited on the surface of foam nickel as a conductive substrate. USE - Method for preparing foam nickel-graphene three-dimensional porous electrode used as super capacitor, lithium ion battery or lithium-air battery electrode (claimed). ADVANTAGE - The method enables to prepare foam nickel-graphene three-dimensional porous electrode which is easy to process in a simple, time-saving and cost-effective manner, and suitable for large scale production. It has high specific surface area, and improves rate of reaction. DETAILED DESCRIPTION - Preparing foam nickel-graphene three-dimensional porous electrode involves cleaning the nickel foam by glacial acetic acid, acetone and ethanol, washing with deionized water and drying, then preparing graphene oxide aqueous solution having concentration of 0.5-10 milligram/milliliter, and directly soaking the foam nickel into the graphene oxide aqueous solution for performing reduction reaction 30-80 degrees C for 2-12 hours. The graphene undergoes a reduction reaction during the immersion process and spontaneously deposited on the surface of foam nickel as a conductive substrate to grow into graphene to form a foam nickel-graphene three-dimensional porous structure.