▎ 摘　　要

NOVELTY - The method involves filtering a negative electrode powder of a waste lithium battery in clean water for a predetermined time, obtaining a filtrate and collecting the filter residue. The finished product waste graphite powder is collected after roasting the filter residue. A graphene sheet is purified to obtain a graphene nanosheet. A purified graphene sheet is weighed and placed the Tefloninner container. The reaction vessel with the predetermined concentration of the potassium permanganate solution is placed for hydrothermal reaction. The water and collecting black or brown yellow graphene hypothermal residue attached is deionized with manganese dioxide after repeatedly washing, repeatedly processing, drying, grinding by a mortar. The raw material is collected as the electrode. An active material is respectively weighed according to the specified active material quality/PTFE agglomerant. USE - Method for preparing super capacitor electrode material by using waste lithium battery, which is useful as energy storage device material e.g. negative electrode. ADVANTAGE - The method enables preparing super capacitor electrode material by using waste lithium battery graphite, which has low carbon processing, and can be successfully synthesized graphene ultra/Manganese dioxide super capacitor material as the new energy storage device material, can be applied in multiple scenes in the energy storage field, and meets the recycling idea of green low carbon. DESCRIPTION OF DRAWING(S) - The drawing shows a flow diagram illustrating of a method for preparing super capacitor electrode material by using waste lithium battery (Drawing includes non-English language text). S100Step for filtering negative electrode powder of waste lithium battery in clean water for predetermined time S200Step for obtaining graphene sheet of waste graphite powder for ball milling S300Step for weighing graphene into Teflon inner container, reaction vessel of potassium permanganate solution out hydrothermal reaction S400Step for weighing active material according to ratio of specified active material quality/PTFE agglomerant