A method for recycling waste lithium-ion battery positive electrode materials

Abstract

The invention discloses a method for recycling and reusing waste lithium-ion battery positive electrode materials, which comprises the following steps: discharging and disassembling waste lithium-ion batteries to obtain positive electrode sheets; adding mixed salt and calcium oxide to the positive electrode sheets and mixing them, and calcining them at a predetermined temperature to obtain waste lithium-ion battery positive electrode materials; adding conductive substances, ethanol and lithium sheets to half of the waste lithium-ion battery positive electrode materials for cleaning, and mixing the other half with an electron-ion dual conductive polymer and subjecting them to a first tempering treatment to obtain a first positive electrode material and a second positive electrode material; mixing the first positive electrode material and the second positive electrode material, and then subjecting them to air flow milling and a second tempering treatment to obtain the positive electrode material. The method of the invention can realize efficient separation of positive electrode materials and aluminum foil without high temperature and long time, is simple to operate, has low energy consumption and a short cycle, and provides a new idea for separation, recycling and reuse of waste lithium-ion battery positive electrode materials and aluminum foil, and has great application prospects.

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