▎ 摘　　要

NOVELTY - Graphene aerogel/metallic lithium composite anode material comprises a graphene aerogel having vertical pore channels connected up and down as a framework, and lithium metal filled inside the vertical pore channels of the graphene aerogel, where the pore size of the vertical pore channel of the graphene aerogel is 10-50 mu m, and the mass fraction of metallic lithium in the composite anode material is 90% or more. USE - The graphene aerogel/metal lithium composite negative electrode material is used as a negative electrode of a lithium metal battery using an ether electrolyte (claimed). ADVANTAGE - The three-dimensional porous framework effectively limits the volume expansion during the electrochemical cycle, and the high specific surface area of the three-dimensional porous framework effectively reduces the actual current density and inhibits the growth of lithium dendrites. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing the graphene aerogel/metallic lithium composite anode material comprising adding a reducing agent to an aqueous solution of graphene oxide, carrying out hydrothermal reaction at 50-80 degrees C for 3-5 hours, and placing in a hydroalcoholic solution for dialysis to remove the remaining reducing agent, and transferring to a copper plate placed under liquid nitrogen for vertical freezing until the upper surface is frozen, transferring to a freeze dryer for freeze-drying, and calcining at 300-600 degrees C for 2-4 hours to obtain a vertical pore channel graphene aerogel, depositing metallic lithium in the vertical pore channels of the graphene aerogel by electrodeposition to obtain the product.