The invention discloses a method for recycling active materials and
aluminum foil from waste
lithium-
ion battery
cathode materials, and belongs to the technical field of
electrode material recycling. The method comprises the steps that waste
lithium-
ion batteries are discharged, disassembled and then
cut, and
cathode sheets are obtained; the
cathode sheets are put into a
sulfuric acid solution to be soaked for 2 min to 10 min to enable cathode active materials to be separated from
aluminum foil, wherein the concentration of the
sulfuric acid solution ranges from 1.0 mol / L to 3.0 mol / L, and the temperature of the
sulfuric acid solution ranges from 40 DEG C to 60 DEG C; and the
aluminum foil is taken out, washed and dried, the dried aluminum foil is obtained, the solution containing the cathode active materials is filtered, filter residues are washed and dried, the cathode active materials are obtained, the cathode active materials are subjected to a wet leaching process, valuable metals in the cathode active materials are recycled, and filtrate is recycled or serves as a slurrying liquid of the wet leaching process. According to the method for recycling the active materials and aluminum foil from the waste
lithium-
ion battery cathode materials, the problem that the cathode active materials and the aluminum foil cannot be effectively and thoroughly separated in the waste lithium-ion
battery recycling process is solved, the technology is simple, the flow is short, the recycling cost is low, large-scale industrial production is easy to achieve, secondary
pollution is not generated in the recycling process, and the method is friendly to the environment.