1. Recycling of positive materials First of all, the positive active substance is effectively separated from the conductive aluminum foil in order to achieve the recovery of the positive electrode material. The current commonly used methods are: ① scraper; ② high temperature incineration; ③ organic solvent dissolving; ④ electrolytic stripping. The lithium -ion battery is used as a positive electrode with a lithium compound, and only lithium ion has no metal lithium. Usually it is lithium manganate, lithium co