▎ 摘　　要

NOVELTY - A method for recycling and utilizing waste battery cathode graphite involves (s1) collecting waste batteries, discharging, disassembling and sorting cathode sheets, mechanically crushing to remove bulk copper foils, grinding and sieving to obtain cathode powder, soaking in acid solution, ultrasonically assisting, filtering the solution containing graphite, washing, drying, and firing to obtain purified graphite, (s2) reacting graphite, nitrate and oxidant, adding inorganic acid into beaker, adding graphite, nitrate and oxidant while stirring under ice water condition, adding deionized water, diluting, stirring, quenching, filtering and cleaning to obtain graphene oxide, and (s3) ultrasonically dispersing in an organic solution, adding metal salt powder, stirring, slowly dripping alkali solution to generate white precipitate, leaving, filtering, cleaning and drying to obtain graphene oxide loaded with metal oxides, and firing. USE - Method for recycling and utilizing waste battery cathode graphite used for preparing multi-metal-loaded graphene absorbent for removing heavy metal ions in wastewater. ADVANTAGE - The method has simple preparation process, low energy consumption, and ensures effective recycling of waste resources. DETAILED DESCRIPTION - Method for recycling and utilizing waste battery cathode graphite involves (s1) collecting waste batteries, discharging, disassembling and sorting cathode sheets, mechanically crushing the sheets to remove bulk copper foils, grinding and sieving to obtain cathode powder, soaking in an acid solution, ultrasonically assisting until the copper is completely dissolved, filtering the solution containing graphite, washing filter residues using deionized water, drying, and feeding into a tubular furnace to be fired to obtain purified graphite, (s2) reacting graphite, nitrate and oxidant in a mass ratio of 1-2:1:1-3, adding 20-60 ml inorganic acid into 1000 ml beaker, adding 1.0-3.0 g graphite, 0.5-3.0 g nitrate and 1.0-9.0 g oxidant sequentially while stirring under ice water condition, carrying out water bath reaction, adding deionized water, raising the temperature for continuous reaction, diluting using deionized water, stirring, quenching using hydrogen peroxide, filtering and cleaning to obtain graphene oxide, and (s3) ultrasonically dispersing obtained graphene oxide in an organic solution, adding metal salt powder, stirring uniformly, slowly dripping alkali solution under magnetic stirring to generate white precipitate, leaving for 36 hours, filtering, cleaning and drying to obtain graphene oxide loaded with metal oxides, and firing in a tubular furnace.